Фронтенд вакансии

Location: San Francisco, CA; Boston, MA; New York, NY Workplace: OnSite ABOUT US At LangChain, our mission is to make intelligent agents ubiquitous. We build the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale. With $125M raised at Series B from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we’re at a stage where we’re continuing to develop new products, growth is accelerating, and all team members have meaningful impact on what we build and how we work together. LangChain is a place where your contributions can shape how this technology shows up in the real world. Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open source downloads, 6,000+ active LangSmith customers, and 5 of the Fortune 10 use LangSmith in production (+ 35% of the Fortune 500 overall), including teams at Klarna, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, LinkedIn, Monday.com, Nvidia, and Bridgewater. About The Role: We’re looking to add a frontend engineer to develop and enhance new features on LangSmith, working on our enterprise platform product for LLM application observability, testing, and debugging. *This role can be based in our San Francisco, New York, or Boston office. Employees within commuting distance work from the office five days per week. Candidates who live outside commuting distance (e.g. >1hr each way), may be eligible for hybrid arrangements depending on location and role requirements. What You Will Do: - Develop new user-facing features using React & Typescript - Build reusable components and front-end libraries for future use - Translate designs and wireframes into high-quality code - Optimize components for maximum performance across a vast array of web-capable devices and browsers - Collaborate with fullstack and backend developers and UX/UI designers, to enhance usability What You Will Bring: - 2+ years of Front-end engineering experience with strong proficiency in React, JavaScript and TypeScript - Hands-on experience with front-end development tools like Babel, Vite, Webpack, NPM, and Yarn - Familiarity with REST APIs and experience working closely with fullstack and backend engineers - Knowledge of modern authorization mechanisms, such as JWTs - A passion for user experience, design and building clean, engaging, and intuitive interfaces - Strong written and oral communication skills, with the ability to explain technical concepts clearly and concisely to both technical and non-technical stakeholders - The DNA to thrive in a start-up, fast-paced environment. Views unstructured environments as an opportunity to figure out the most impactful work and help define the future success of the company - An ownership mind-set. You are self-driven and look for opportunities to make an impact. - Strong computer science fundamentals, ideally with a degree in computer science or related field Compensation - Annual salary range: $160,000-$195,000 USD Compensation Philosophy: We offer competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks. We are hiring for this role across a range of scope, and the compensation band reflects that. Your offer depends on what we learn about your impact, craft, leadership, and communication during the interview process. We will tell you early where you’re tracking and talk comp with you before offer stage. Team members in the EU, UK, and APAC receive locally competitive benefits aligned with regional norms and regulations. BENEFITS Benefits include medical, dental, and vision coverage, flexible vacation, a 401(k) plan, meals on in-office days in the US and more.

Responsibilities: — Developing applications for web and mobile using React Native; — Writing and supporting components with strict types, documentation, and tests; — Creating scalable and reusable components with smooth 60fps animations for both mobile and web platforms; — Working with real-time high-rate and high-throughput data flow ensuring performance on low-end devices; — Developing shared components codebase usable across web and native platforms. Requirements: — 3+ years hands-on frontend coding experience; — Strong knowledge of React, React Native, and TypeScript; — Strong user experience design skills and attention to detail in UX interface design; — Experience with responsive design, media queries, resolution independent image display, and delivering functionality across devices and platforms; — Experience building large-scale web and mobile applications; — Comfortable with Agile methodologies including Scrum and Kanban; — Native or fluent English. Nice to have: — Experience in financial sector (brokers, banks, investment projects, crypto-exchangers); — Fluent English. Bonuses: — Flexible holidays: 5/2 all year round, 30 working days vacation per year; — Opportunities for professional development and career growth; — Corporate English classes; — Legalization (work permit) for candidate and family in Montenegro; — Assistance in relocation; — Ability to work remotely.

Responsibilities: — Developing applications for web and mobile using React Native; — Writing and supporting components with strict types, documentation, and tests; — Creating scalable and reusable components with smooth 60fps animations for both mobile and web platforms; — Working with real-time high-rate and high-throughput data flow ensuring performance on low-end devices; — Developing shared components codebase usable across web and native platforms. Requirements: — 3+ years hands-on frontend coding experience; — Strong knowledge of React, React Native, and TypeScript; — Strong user experience design skills and attention to detail in UX interface design; — Experience with responsive design, media queries, resolution independent image display, and delivering functionality across devices and platforms; — Experience building large-scale web and mobile applications; — Comfortable with Agile methodologies including Scrum and Kanban; — Native or fluent English. Nice to have: — Experience in financial sector (brokers, banks, investment projects, crypto-exchangers); — Fluent English. Bonuses: — Flexible holidays: 5/2 all year round, 30 working days vacation per year; — Opportunities for professional development and career growth; — Corporate English classes; — Legalization (work permit) for candidate and family in Montenegro; — Assistance in relocation; — Ability to work remotely.

Задачи: — Разработка фронтенда с использованием Vue 3.5 с Composition API, TypeScript и Pinia 3 (setup stores / composition style). Требования: — Коммерческий опыт с Vue 3, Composition API и TypeScript; — Уверенная работа с Tailwind CSS 3 или 4; — Опыт использования Pinia именно через setup stores; — Умение писать unit-тесты на Vitest; — Понимание архитектуры фронтенда; — Умение проектировать масштабируемые и поддерживаемые решения; — Рабочее время должно пересекаться с московским часовым поясом (допустимый сдвиг — не более 3–4 часов). Для Senior-разработчиков с сильным опытом условие по часовому поясу не является критичным. Будет плюсом: — Практический опыт со Storybook и Chart.js; — Сильная архитектурная насмотренность; — Опыт работы над сложными проектами. Условия: — Полностью удалённая работа из любой точки мира; — Оплата в криптовалюте; — Оплачиваемое тестовое задание; — Старт — ASAP.

Задачи: — Проектировать, разрабатывать и поддерживать современные frontend-приложения и функции с использованием React и TypeScript — Создавать переиспользуемые, масштабируемые и поддерживаемые UI-компоненты и архитектуру frontend — Разрабатывать новые интерфейсы, поддерживать и улучшать существующие продукты — Участвовать в обсуждениях архитектуры frontend, предлагать технические решения и вносить вклад в ключевые инженерные решения — Тесно сотрудничать с backend-разработчиками, менеджерами продуктов, дизайнерами и другими командами для обеспечения бесшовного пользовательского опыта — Решать сложные задачи frontend, связанные с управлением состоянием, производительностью, масштабируемостью и интерфейсами с интенсивной обработкой данных — Обеспечивать высокие стандарты качества кода через тестирование, код-ревью и поддерживаемые инженерные практики Требования: — Опыт профессиональной frontend-разработки не менее 5 лет, значительный опыт создания приложений на React — Глубокие знания современного React, включая хуки, композицию, управление состоянием и архитектуру компонентов — Уверенный опыт работы с TypeScript и построения типизированных, поддерживаемых frontend-кодовых баз — Хорошее понимание HTML, CSS и современных подходов к стилизации frontend — Знание оптимизации производительности frontend, включая рендеринг, контроль повторного рендера, размер бандла и интерфейсы с интенсивной обработкой данных Условия: — Гибкий график работы и гибридный формат — Хорошо оборудованные офисы для сосредоточенной и совместной работы — Глобальная распределённая команда из более 500 профессионалов — Обучение, наставничество и долгосрочный карьерный рост — Поддержка релокации и частная медицинская страховка — Бонусы, основанные на результатах работы — Доступ к TradingView Premium — Регулярные командные мероприятия и общекорпоративные встречи

Location: Tallinn, Estonia Workplace: Hybrid Sensor Tower’s digital intelligence platform provides unparalleled insight into market trends, advertising, competitor’s strategies, and consumer/user audience across mobile, web, and gaming. Sensor Tower’s insights are trusted by more than 2,500 enterprises worldwide across tech, retail/commerce, entertainment/media, gaming, consumer packaged goods and finance. Role Summary: As a Frontend Engineer at Sensor Tower, you will not only build features, you will define how we build them. You will take ownership of major technical components, ensuring our applications are scalable, maintainable, and fast. In our lean and flat organization, your voice will shape the technical direction of our product, helping us deliver an intuitive, fluid user experience that helps our customers understand the digital ecosystem.   Fulfill your potential with us: - Architect and deliver complex, scalable frontend systems that are simple and effective, removing unnecessary complexity from our codebase. - You will partner with Product Managers to co-author requirements and shape the scope, ensuring engineering feasibility is considered during ideation, not just execution. - Lead technical decision-making for medium-to-large scoped features, taking responsibility for the successful delivery of value to the customer, not just the completion of tickets. - Mentor junior and mid-level engineers through code reviews, pair programming, and by instilling quality-first habits across the team. - Take ownership of the frontend stack by proactively identifying bottlenecks, technical debt, or systemic issues and driving the initiatives to fix them. - Advocate for and drive best practices in React, TypeScript, and web performance optimization across the engineering organization. - Collaborate deeply with Data Science and Backend Engineers to ensure seamless data flow and end-to-end system reliability, and use these partnerships to progressively expand your expertise across the full stack.   What we are interested in:   - 4+ years of software engineering experience with a deep specialization in modern JavaScript, TypeScript, and React. - Proven ability to architect complex state management. While our stack relies on TanStack Query, React Router and Zustand, we value engineers who understand the principles and can adapt expertise from other libraries like Redux, MobX, NextJS. - You can design systems that handle complexity without becoming complicated, prioritizing long-term maintainability. - Experience elevating the skills of peers. You don't just review their code; you teach patterns and best practices. - Competence in writing robust and efficient unit and integration tests using frameworks like Jest or Playwright. - Deep understanding of web performance, browser internals, and optimization techniques for data-heavy applications. - A "Product Owner" mindset. You care deeply about the "why" behind every feature, viewing code as a tool to solve real user problems. You are comfortable pushing back on requirements and proposing alternative solutions that drive better business outcomes and user experiences.   Extra Credit:   - Experience in data visualization and analytics (handling large datasets, heavy DOM manipulation with libraries like Highcharts). - A portfolio, GitHub history, or technical writing that demonstrates clean code, an eye for design, and the ability to solve complex architectural challenges. - Familiarity with back end frameworks Ruby on Rails/Angular and different types of DBs (Clickhouse, Mongo, Postgres) - Knowledge of AI-driven coding tools and models as we encourage leveraging AI to enhance coding efficiency and unlock creative potential   Blog Posts Read more about some of our Technical challenges here (written by members of our engineering team): https://sensortower.com/blog/how-we-scaled-to-thousands-of-sidekiq-workers     About Sensor Tower Sensor Tower is a global provider of digital intelligence solutions, empowering companies to understand consumer behavior and market performance across mobile apps, digital platforms, and gaming ecosystems. Headquartered in San Francisco, Sensor Tower's insights are trusted by more than 2,500 enterprises worldwide.   Founded in 2013, Sensor Tower’s market insights have helped marketers, app developers, and gaming leaders demystify the mobile app ecosystem with visibility into usage, engagement, and paid acquisition strategies. Today, Sensor Tower’s digital market insights platform has expanded to include Gaming, Web, Audience, and Digital Advertising Insights, helping global leaders understand market trends and their competitor’s strategies and audiences across the entire digital ecosystem.   Why Sensor Tower? Our flexible work environment allows employees to live in greater connection with the people, places, and activities they love! Global Teams Sensor Tower has a global presence, with teams across the world and available in most time zones, including North America, Europe, Middle East, Africa, APAC and LATAM. We maintain regional offices in SF, LA, NY, London, Singapore, Beijing, Seoul, Tokyo and Vancouver. Our benefits include: - Flexible time off so employees can shape their time away from work. - Health and wellness stipend to achieve and maintain a healthy lifestyle through physical and mental fitness. - Wi-Fi Allowance. - Monthly internet stipend and a one-time $500 home office stipend.   We are committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, and veteran status. We will consider qualified applicants with arrest and conviction records. If you have a disability or special need, please do not hesitate to let us know and we'll do our best to accommodate. Fraud warning: It's common for scammers to create positions that look legitimate on other sites. To ensure your submission is considered, only apply for positions at Sensor Tower through our company website or through posts directly associated with Sensor Tower company profiles on sites such as LinkedIn, Indeed, BuiltIn or Hackajob. At no point will Sensor Tower ever ask for money, credit card, or bank account information to complete a job application. Communications received from Sensor Tower are only sent by e-mail addresses ending in sensortower.com http://sensortower.com. All Sensor Tower interviews will be conducted via phone or Zoom. At no time will a conversation be moved to an alternative email outside of sensortower.com http://sensortower.com or text. Should an issue arise that you feel we should be aware of, please contact us. Please provide your resume when applying. To all recruitment agencies: Sensor Tower does not accept third party resumes. Please do not send resumes to our jobs alias, Sensor Tower employees or any other organization location. Sensor Tower is not responsible for any fees related to unsolicited resumes. Sensor Tower will not pay any third-party agency or company that does not have a signed agreement with Sensor Tower. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Location: London, UK Workplace: Hybrid Sensor Tower’s digital intelligence platform provides unparalleled insight into market trends, advertising, competitor’s strategies, and consumer/user audience across mobile, web, and gaming. Sensor Tower’s insights are trusted by more than 2,500 enterprises worldwide across tech, retail/commerce, entertainment/media, gaming, consumer packaged goods and finance. Role Summary: As a Frontend Engineer at Sensor Tower, you will not only build features, you will define how we build them. You will take ownership of major technical components, ensuring our applications are scalable, maintainable, and fast. In our lean and flat organization, your voice will shape the technical direction of our product, helping us deliver an intuitive, fluid user experience that helps our customers understand the digital ecosystem.   Fulfill your potential with us: - Architect and deliver complex, scalable frontend systems that are simple and effective, removing unnecessary complexity from our codebase. - You will partner with Product Managers to co-author requirements and shape the scope, ensuring engineering feasibility is considered during ideation, not just execution. - Lead technical decision-making for medium-to-large scoped features, taking responsibility for the successful delivery of value to the customer, not just the completion of tickets. - Mentor junior and mid-level engineers through code reviews, pair programming, and by instilling quality-first habits across the team. - Take ownership of the frontend stack by proactively identifying bottlenecks, technical debt, or systemic issues and driving the initiatives to fix them. - Advocate for and drive best practices in React, TypeScript, and web performance optimization across the engineering organization. - Collaborate deeply with Data Science and Backend Engineers to ensure seamless data flow and end-to-end system reliability, and use these partnerships to progressively expand your expertise across the full stack.   What we are interested in:   - 4+ years of software engineering experience with a deep specialization in modern JavaScript, TypeScript, and React. - Proven ability to architect complex state management. While our stack relies on TanStack Query, React Router and Zustand, we value engineers who understand the principles and can adapt expertise from other libraries like Redux, MobX, NextJS. - You can design systems that handle complexity without becoming complicated, prioritizing long-term maintainability. - Experience elevating the skills of peers. You don't just review their code; you teach patterns and best practices. - Competence in writing robust and efficient unit and integration tests using frameworks like Jest or Playwright. - Deep understanding of web performance, browser internals, and optimization techniques for data-heavy applications. - A "Product Owner" mindset. You care deeply about the "why" behind every feature, viewing code as a tool to solve real user problems. You are comfortable pushing back on requirements and proposing alternative solutions that drive better business outcomes and user experiences.   Extra Credit:   - Experience in data visualization and analytics (handling large datasets, heavy DOM manipulation with libraries like Highcharts). - A portfolio, GitHub history, or technical writing that demonstrates clean code, an eye for design, and the ability to solve complex architectural challenges. - Familiarity with back end frameworks Ruby on Rails/Angular and different types of DBs (Clickhouse, Mongo, Postgres) - Knowledge of AI-driven coding tools and models as we encourage leveraging AI to enhance coding efficiency and unlock creative potential   Blog Posts Read more about some of our Technical challenges here (written by members of our engineering team): https://sensortower.com/blog/how-we-scaled-to-thousands-of-sidekiq-workers     About Sensor Tower Sensor Tower is a global provider of digital intelligence solutions, empowering companies to understand consumer behavior and market performance across mobile apps, digital platforms, and gaming ecosystems. Headquartered in San Francisco, Sensor Tower's insights are trusted by more than 2,500 enterprises worldwide.   Founded in 2013, Sensor Tower’s market insights have helped marketers, app developers, and gaming leaders demystify the mobile app ecosystem with visibility into usage, engagement, and paid acquisition strategies. Today, Sensor Tower’s digital market insights platform has expanded to include Gaming, Web, Audience, and Digital Advertising Insights, helping global leaders understand market trends and their competitor’s strategies and audiences across the entire digital ecosystem.   Why Sensor Tower? Our flexible work environment allows employees to live in greater connection with the people, places, and activities they love! Global Teams Sensor Tower has a global presence, with teams across the world and available in most time zones, including North America, Europe, Middle East, Africa, APAC and LATAM. We maintain regional offices in SF, LA, NY, London, Singapore, Beijing, Seoul, Tokyo and Vancouver. Our benefits include: - Flexible time off so employees can shape their time away from work. - Health and wellness stipend to achieve and maintain a healthy lifestyle through physical and mental fitness. - Monthly internet stipend and a one-time $500 home office stipend.   We are committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, and veteran status. We will consider qualified applicants with arrest and conviction records. If you have a disability or special need, please do not hesitate to let us know and we'll do our best to accommodate. Fraud warning: It's common for scammers to create positions that look legitimate on other sites. To ensure your submission is considered, only apply for positions at Sensor Tower through our company website or through posts directly associated with Sensor Tower company profiles on sites such as LinkedIn, Indeed, BuiltIn or Hackajob. At no point will Sensor Tower ever ask for money, credit card, or bank account information to complete a job application. Communications received from Sensor Tower are only sent by e-mail addresses ending in sensortower.com http://sensortower.com. All Sensor Tower interviews will be conducted via phone or Zoom. At no time will a conversation be moved to an alternative email outside of sensortower.com http://sensortower.com or text. Should an issue arise that you feel we should be aware of, please contact us. Please provide your resume when applying. To all recruitment agencies: Sensor Tower does not accept third party resumes. Please do not send resumes to our jobs alias, Sensor Tower employees or any other organization location. Sensor Tower is not responsible for any fees related to unsolicited resumes. Sensor Tower will not pay any third-party agency or company that does not have a signed agreement with Sensor Tower. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Location: Lisbon, Portugal Workplace: Remote Sensor Tower’s digital intelligence platform provides unparalleled insight into market trends, advertising, competitor’s strategies, and consumer/user audience across mobile, web, and gaming. Sensor Tower’s insights are trusted by more than 2,500 enterprises worldwide across tech, retail/commerce, entertainment/media, gaming, consumer packaged goods and finance. Role Summary: As a Frontend Engineer at Sensor Tower, you will not only build features, you will define how we build them. You will take ownership of major technical components, ensuring our applications are scalable, maintainable, and fast. In our lean and flat organization, your voice will shape the technical direction of our product, helping us deliver an intuitive, fluid user experience that helps our customers understand the digital ecosystem.   Fulfill your potential with us: - Architect and deliver complex, scalable frontend systems that are simple and effective, removing unnecessary complexity from our codebase. - You will partner with Product Managers to co-author requirements and shape the scope, ensuring engineering feasibility is considered during ideation, not just execution. - Lead technical decision-making for medium-to-large scoped features, taking responsibility for the successful delivery of value to the customer, not just the completion of tickets. - Mentor junior and mid-level engineers through code reviews, pair programming, and by instilling quality-first habits across the team. - Take ownership of the frontend stack by proactively identifying bottlenecks, technical debt, or systemic issues and driving the initiatives to fix them. - Advocate for and drive best practices in React, TypeScript, and web performance optimization across the engineering organization. - Collaborate deeply with Data Science and Backend Engineers to ensure seamless data flow and end-to-end system reliability, and use these partnerships to progressively expand your expertise across the full stack.   What we are interested in:   - 4+ years of software engineering experience with a deep specialization in modern JavaScript, TypeScript, and React. - Proven ability to architect complex state management. While our stack relies on TanStack Query, React Router and Zustand, we value engineers who understand the principles and can adapt expertise from other libraries like Redux, MobX, NextJS. - You can design systems that handle complexity without becoming complicated, prioritizing long-term maintainability. - Experience elevating the skills of peers. You don't just review their code; you teach patterns and best practices. - Competence in writing robust and efficient unit and integration tests using frameworks like Jest or Playwright. - Deep understanding of web performance, browser internals, and optimization techniques for data-heavy applications. - A "Product Owner" mindset. You care deeply about the "why" behind every feature, viewing code as a tool to solve real user problems. You are comfortable pushing back on requirements and proposing alternative solutions that drive better business outcomes and user experiences.   Extra Credit:   - Experience in data visualization and analytics (handling large datasets, heavy DOM manipulation with libraries like Highcharts). - A portfolio, GitHub history, or technical writing that demonstrates clean code, an eye for design, and the ability to solve complex architectural challenges. - Familiarity with back end frameworks Ruby on Rails/Angular and different types of DBs (Clickhouse, Mongo, Postgres) - Knowledge of AI-driven coding tools and models as we encourage leveraging AI to enhance coding efficiency and unlock creative potential   Blog Posts Read more about some of our Technical challenges here (written by members of our engineering team): https://sensortower.com/blog/how-we-scaled-to-thousands-of-sidekiq-workers     About Sensor Tower Sensor Tower is a global provider of digital intelligence solutions, empowering companies to understand consumer behavior and market performance across mobile apps, digital platforms, and gaming ecosystems. Headquartered in San Francisco, Sensor Tower's insights are trusted by more than 2,500 enterprises worldwide.   Founded in 2013, Sensor Tower’s market insights have helped marketers, app developers, and gaming leaders demystify the mobile app ecosystem with visibility into usage, engagement, and paid acquisition strategies. Today, Sensor Tower’s digital market insights platform has expanded to include Gaming, Web, Audience, and Digital Advertising Insights, helping global leaders understand market trends and their competitor’s strategies and audiences across the entire digital ecosystem.   Why Sensor Tower? Our flexible work environment allows employees to live in greater connection with the people, places, and activities they love! Global Teams Sensor Tower has a global presence, with teams across the world and available in most time zones, including North America, Europe, Middle East, Africa, APAC and LATAM. We maintain regional offices in SF, LA, NY, London, Singapore, Beijing, Seoul, Tokyo and Vancouver.   We are committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, and veteran status. We will consider qualified applicants with arrest and conviction records. If you have a disability or special need, please do not hesitate to let us know and we'll do our best to accommodate.   Fraud warning: It's common for scammers to create positions that look legitimate on other sites. To ensure your submission is considered, only apply for positions at Sensor Tower through our company website or through posts directly associated with Sensor Tower company profiles on sites such as LinkedIn, Indeed, BuiltIn or Hackajob. At no point will Sensor Tower ever ask for money, credit card, or bank account information to complete a job application. Communications received from Sensor Tower are only sent by e-mail addresses ending in sensortower.com http://sensortower.com. All Sensor Tower interviews will be conducted via phone or Zoom. At no time will a conversation be moved to an alternative email outside of sensortower.com http://sensortower.com or text. Should an issue arise that you feel we should be aware of, please contact us. Please provide your resume when applying. To all recruitment agencies: Sensor Tower does not accept third party resumes. Please do not send resumes to our jobs alias, Sensor Tower employees or any other organization location. Sensor Tower is not responsible for any fees related to unsolicited resumes. Sensor Tower will not pay any third-party agency or company that does not have a signed agreement with Sensor Tower. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Location: Krakow, Poland Workplace: Remote Sensor Tower’s digital intelligence platform provides unparalleled insight into market trends, advertising, competitor’s strategies, and consumer/user audience across mobile, web, and gaming. Sensor Tower’s insights are trusted by more than 2,500 enterprises worldwide across tech, retail/commerce, entertainment/media, gaming, consumer packaged goods and finance. Role Summary: As a Frontend Engineer at Sensor Tower, you will not only build features, you will define how we build them. You will take ownership of major technical components, ensuring our applications are scalable, maintainable, and fast. In our lean and flat organization, your voice will shape the technical direction of our product, helping us deliver an intuitive, fluid user experience that helps our customers understand the digital ecosystem.   Fulfill your potential with us: - Architect and deliver complex, scalable frontend systems that are simple and effective, removing unnecessary complexity from our codebase. - You will partner with Product Managers to co-author requirements and shape the scope, ensuring engineering feasibility is considered during ideation, not just execution. - Lead technical decision-making for medium-to-large scoped features, taking responsibility for the successful delivery of value to the customer, not just the completion of tickets. - Mentor junior and mid-level engineers through code reviews, pair programming, and by instilling quality-first habits across the team. - Take ownership of the frontend stack by proactively identifying bottlenecks, technical debt, or systemic issues and driving the initiatives to fix them. - Advocate for and drive best practices in React, TypeScript, and web performance optimization across the engineering organization. - Collaborate deeply with Data Science and Backend Engineers to ensure seamless data flow and end-to-end system reliability, and use these partnerships to progressively expand your expertise across the full stack.   What we are interested in:   - 4+ years of software engineering experience with a deep specialization in modern JavaScript, TypeScript, and React. - Proven ability to architect complex state management. While our stack relies on TanStack Query, React Router and Zustand, we value engineers who understand the principles and can adapt expertise from other libraries like Redux, MobX, NextJS. - You can design systems that handle complexity without becoming complicated, prioritizing long-term maintainability. - Experience elevating the skills of peers. You don't just review their code; you teach patterns and best practices. - Competence in writing robust and efficient unit and integration tests using frameworks like Jest or Playwright. - Deep understanding of web performance, browser internals, and optimization techniques for data-heavy applications. - A "Product Owner" mindset. You care deeply about the "why" behind every feature, viewing code as a tool to solve real user problems. You are comfortable pushing back on requirements and proposing alternative solutions that drive better business outcomes and user experiences.   Extra Credit:   - Experience in data visualization and analytics (handling large datasets, heavy DOM manipulation with libraries like Highcharts). - A portfolio, GitHub history, or technical writing that demonstrates clean code, an eye for design, and the ability to solve complex architectural challenges. - Familiarity with back end frameworks Ruby on Rails/Angular and different types of DBs (Clickhouse, Mongo, Postgres) - Knowledge of AI-driven coding tools and models as we encourage leveraging AI to enhance coding efficiency and unlock creative potential   Blog Posts Read more about some of our Technical challenges here (written by members of our engineering team): https://sensortower.com/blog/how-we-scaled-to-thousands-of-sidekiq-workers     About Sensor Tower Sensor Tower is a global provider of digital intelligence solutions, empowering companies to understand consumer behavior and market performance across mobile apps, digital platforms, and gaming ecosystems. Headquartered in San Francisco, Sensor Tower's insights are trusted by more than 2,500 enterprises worldwide.   Founded in 2013, Sensor Tower’s market insights have helped marketers, app developers, and gaming leaders demystify the mobile app ecosystem with visibility into usage, engagement, and paid acquisition strategies. Today, Sensor Tower’s digital market insights platform has expanded to include Gaming, Web, Audience, and Digital Advertising Insights, helping global leaders understand market trends and their competitor’s strategies and audiences across the entire digital ecosystem.   Why Sensor Tower? Our flexible work environment allows employees to live in greater connection with the people, places, and activities they love! Global Teams Sensor Tower has a global presence, with teams across the world and available in most time zones, including North America, Europe, Middle East, Africa, APAC and LATAM. We maintain regional offices in SF, LA, NY, London, Singapore, Beijing, Seoul, Tokyo and Vancouver.   We are committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, and veteran status. We will consider qualified applicants with arrest and conviction records. If you have a disability or special need, please do not hesitate to let us know and we'll do our best to accommodate.   Fraud warning: It's common for scammers to create positions that look legitimate on other sites. To ensure your submission is considered, only apply for positions at Sensor Tower through our company website or through posts directly associated with Sensor Tower company profiles on sites such as LinkedIn, Indeed, BuiltIn or Hackajob. At no point will Sensor Tower ever ask for money, credit card, or bank account information to complete a job application. Communications received from Sensor Tower are only sent by e-mail addresses ending in sensortower.com http://sensortower.com. All Sensor Tower interviews will be conducted via phone or Zoom. At no time will a conversation be moved to an alternative email outside of sensortower.com http://sensortower.com or text. Should an issue arise that you feel we should be aware of, please contact us. Please provide your resume when applying. To all recruitment agencies: Sensor Tower does not accept third party resumes. Please do not send resumes to our jobs alias, Sensor Tower employees or any other organization location. Sensor Tower is not responsible for any fees related to unsolicited resumes. Sensor Tower will not pay any third-party agency or company that does not have a signed agreement with Sensor Tower. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Location: Warsaw, Poland Workplace: Remote Sensor Tower’s digital intelligence platform provides unparalleled insight into market trends, advertising, competitor’s strategies, and consumer/user audience across mobile, web, and gaming. Sensor Tower’s insights are trusted by more than 2,500 enterprises worldwide across tech, retail/commerce, entertainment/media, gaming, consumer packaged goods and finance. Role Summary: As a Frontend Engineer at Sensor Tower, you will not only build features, you will define how we build them. You will take ownership of major technical components, ensuring our applications are scalable, maintainable, and fast. In our lean and flat organization, your voice will shape the technical direction of our product, helping us deliver an intuitive, fluid user experience that helps our customers understand the digital ecosystem. Fulfill your potential with us: - Architect and deliver complex, scalable frontend systems that are simple and effective, removing unnecessary complexity from our codebase. - You will partner with Product Managers to co-author requirements and shape the scope, ensuring engineering feasibility is considered during ideation, not just execution. - Lead technical decision-making for medium-to-large scoped features, taking responsibility for the successful delivery of value to the customer, not just the completion of tickets. - Mentor junior and mid-level engineers through code reviews, pair programming, and by instilling quality-first habits across the team. - Take ownership of the frontend stack by proactively identifying bottlenecks, technical debt, or systemic issues and driving the initiatives to fix them. - Advocate for and drive best practices in React, TypeScript, and web performance optimization across the engineering organization. - Collaborate deeply with Data Science and Backend Engineers to ensure seamless data flow and end-to-end system reliability, and use these partnerships to progressively expand your expertise across the full stack.   What we are interested in:   - 4+ years of software engineering experience with a deep specialization in modern JavaScript, TypeScript, and React. - Proven ability to architect complex state management. While our stack relies on TanStack Query, React Router and Zustand, we value engineers who understand the principles and can adapt expertise from other libraries like Redux, MobX, NextJS. - You can design systems that handle complexity without becoming complicated, prioritizing long-term maintainability. - Experience elevating the skills of peers. You don't just review their code; you teach patterns and best practices. - Competence in writing robust and efficient unit and integration tests using frameworks like Jest or Playwright. - Deep understanding of web performance, browser internals, and optimization techniques for data-heavy applications. - A "Product Owner" mindset. You care deeply about the "why" behind every feature, viewing code as a tool to solve real user problems. You are comfortable pushing back on requirements and proposing alternative solutions that drive better business outcomes and user experiences. Extra Credit:   - Experience in data visualization and analytics (handling large datasets, heavy DOM manipulation with libraries like Highcharts). - A portfolio, GitHub history, or technical writing that demonstrates clean code, an eye for design, and the ability to solve complex architectural challenges. - Familiarity with back end frameworks Ruby on Rails/Angular and different types of DBs (Clickhouse, Mongo, Postgres) - Knowledge of AI-driven coding tools and models as we encourage leveraging AI to enhance coding efficiency and unlock creative potential   Blog Posts Read more about some of our Technical challenges here (written by members of our engineering team): https://sensortower.com/blog/how-we-scaled-to-thousands-of-sidekiq-workers   About Sensor Tower Sensor Tower is a global provider of digital intelligence solutions, empowering companies to understand consumer behavior and market performance across mobile apps, digital platforms, and gaming ecosystems. Headquartered in San Francisco, Sensor Tower's insights are trusted by more than 2,500 enterprises worldwide. Founded in 2013, Sensor Tower’s market insights have helped marketers, app developers, and gaming leaders demystify the mobile app ecosystem with visibility into usage, engagement, and paid acquisition strategies. Today, Sensor Tower’s digital market insights platform has expanded to include Gaming, Web, Audience, and Digital Advertising Insights, helping global leaders understand market trends and their competitor’s strategies and audiences across the entire digital ecosystem. Why Sensor Tower? Our flexible work environment allows employees to live in greater connection with the people, places, and activities they love! Global Teams Sensor Tower has a global presence, with teams across the world and available in most time zones, including North America, Europe, Middle East, Africa, APAC and LATAM. We maintain regional offices in SF, LA, NY, London, Singapore, Beijing, Seoul, Tokyo and Vancouver. We are committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, and veteran status. We will consider qualified applicants with arrest and conviction records. If you have a disability or special need, please do not hesitate to let us know and we'll do our best to accommodate. Fraud warning: It's common for scammers to create positions that look legitimate on other sites. To ensure your submission is considered, only apply for positions at Sensor Tower through our company website or through posts directly associated with Sensor Tower company profiles on sites such as LinkedIn, Indeed, BuiltIn or Hackajob. At no point will Sensor Tower ever ask for money, credit card, or bank account information to complete a job application. Communications received from Sensor Tower are only sent by e-mail addresses ending in sensortower.com http://sensortower.com. All Sensor Tower interviews will be conducted via phone or Zoom. At no time will a conversation be moved to an alternative email outside of sensortower.com http://sensortower.com or text. Should an issue arise that you feel we should be aware of, please contact us. Please provide your resume when applying. To all recruitment agencies: Sensor Tower does not accept third party resumes. Please do not send resumes to our jobs alias, Sensor Tower employees or any other organization location. Sensor Tower is not responsible for any fees related to unsolicited resumes. Sensor Tower will not pay any third-party agency or company that does not have a signed agreement with Sensor Tower. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Zalando — крупнейший онлайн-ритейлер в Европе с командой более 10 000 человек и оценкой компании более $9 млрд. Требования: — Опыт работы с React и TypeScript — Знание AWS и Kubernetes — Свободное владение английским языком Условия: — Помощь с релокацией — Работа в Берлине Компания основана Давидом Шнайдером и Робертом Генцем, в коллективе много русскоговорящих сотрудников.

ОБЗОР ПОЗИЦИИ И ПРОЕКТА Проектирование и разработка функциональных подсистем на low-code платформе. ЧЕМ ПРЕДСТОИТ ЗАНИМАТЬСЯ • Проектирование и разработка функциональных подсистем с использованием инструментальных средств разработки; • Выстраивание логики формирования документов УФОС; • Настройка структуры данных, форм пользовательского интерфейса, бизнес-логики, статусной модели в ОТР.Студия; • Работа с XML, XSD, XSLT, JSON; • Прохождение обучения работе в Студии (5 недель). ТРЕБОВАНИЯ К КАНДИДАТУ • Оконченное высшее образование; • Опыт коммерческой разработки от 5 лет; • Знание и понимание SQL (PostgreSQL); • Знание JavaScript (опционально); • Знание основ XML, XSD, XSLT; • Знание основ JSON; • Опыт работы с GitLab; • Опыт разработки ПО; • Системное мышление. УСЛОВИЯ • Долгосрочный проект с возможностью продления контракта; • Оформление по ИП; • Оплата за фактически отработанное время.

Задачи: • Разработка user-friendly сайтов, которые будут радовать пользователей простотой и функциональностью; • Создание личного кабинета для клиентов и партнёров с удобным доступом к информации; • Разработка админ-панелей для внутренних сервисов — чтобы управление процессами стало быстрее и удобнее; • Участие в интересных задачах команды, где твоя индивидуальность и мнение будут ценными. Стек технологий: HTML/CSS, JavaScript (ES6+), TypeScript, Vue.js, Nuxt.js, Vuex/Pinia, REST API, SSR, Git, Node.js, npm, Docker. Требования: • Владение HTML/CSS, JavaScript (ES6+) и TypeScript; • Знание Vue.js, Nuxt.js, Vuex/Pinia; • Понимание принципов ООП, ФП, SOLID, DRY, KISS, YAGNI; • Опыт с Server-Side Rendering (SSR) и Universal Apps; • Хорошее понимание REST API; • Знание лучших практик UI/UX; • Опыт проектирования архитектуры приложений; • Умение решать сложные задачи самостоятельно. Будет двойным плюсом: • Тестирование (Jest или Mocha + Chai); • Глубокое знание механизма реактивности в Vue.js; • Понимание бэкенд-технологий; • Глубокое понимание асинхронности (runtime, callstack, eventloop); • Работа с CSS (TailwindCSS) / SCSS-фреймворками и принципами позиционирования (Flex, Grid, Block, Inline-block); • Знание DevOps-технологий и опыт взаимодействия с ними; • Контейнеризация с помощью Docker. Условия: • Зарплата по итогам собеседования (в рамках вилки); • Равноправие в команде: каждый голос важен; • Лёгкая, вайбовая атмосфера и корп. культура; • Важно: первым этапом отбора предусмотрено выполнение ТЗ.

Ищем к нам в команду Middle+ Frontend/Web разработчика на быстрорастущий Исламский стартап. Требования: — Навыки React — Навыки Next.js — Навыки TypeScript — Желателен опыт работы с аудио стримингом.

Задачи: - Разрабатывать новый функционал продукта и участвовать в запуске новых проектов. - Реализовывать pixel-perfect интерфейсы по макетам Figma, соблюдая дизайн-систему и высокие стандарты качества. - Работать со сложной бизнес-логикой, улучшать архитектуру приложения, заниматься рефакторингом и поддержкой существующего функционала. - Писать unit- и integration-тесты, самостоятельно проверять качество реализованных решений. - Оптимизировать производительность приложения, улучшать SEO и участвовать в развитии продукта вместе с дизайнерами и командой разработки. Требования: - Коммерческий опыт разработки на React и Next.js в продуктовой компании. - Отличное знание TypeScript, включая generics и строгую типизацию. - Опыт работы с App Router и React Server Components. - Опыт работы с react-hook-form, Zod и Zustand. - Опыт разработки в рамках дизайн-систем и работы с Figma. - Опыт оптимизации производительности (Core Web Vitals, rendering, bundle size) и понимание принципов SEO. - Опыт написания unit- и integration-тестов. Будет преимуществом: Stripe, Coinflow; Web3 / Solana; next-intl; Feature-Sliced Design (FSD); epub.js; Google Tag Manager, GA4, маркетинговые интеграции и аналитика. Условия: - Полностью удалённая работа. - Оплата в валюте. Оформление по b2b контракту. - Гибкость, минимум бюрократии. - Небольшая команда, где ваш вклад заметен.

Сейчас ищут Junior Frontend-разработчика с навыками React и TypeScript, а также Junior Backend-разработчика с навыками Node.js и TypeScript. В приоритете — недавние выпускники ВУЗов IT- и инженерных специальностей, которые действительно заинтересованы в разработке, готовы много учиться и хотят быстро расти. Локация: за пределами РФ.

Задачи: — Владеть и развивать основные примитивы фронтенд-платформы для обеспечения масштабируемости и поддерживаемости конструктора рабочих процессов. — Проектировать опыт построения на основе canvas и реализовывать совместную работу в реальном времени с использованием WebSockets и CRDT. — Оптимизировать производительность рендеринга и поведение во время выполнения для сложных, высокопроизводительных пользовательских интерфейсов. — Усиливать платформенные контракты, системы плагинов и общий опыт разработчиков фронтенда (DX). — Принимать технические решения через RFC и сотрудничать с инженерами продукта, QA и сообществом с открытым исходным кодом. Требования: — Опыт создания архитектурно сложных фронтенд-продуктов, таких как инструменты на canvas, совместные редакторы или приложения в реальном времени. — Глубокие знания TypeScript и понимание измерения и профилирования производительности. — Подтвержденный опыт владения значимыми фронтенд-системами, ведения миграций или реархитектуры сложных областей продукта. — Наличие права работать в Европе или США. — Владение английским языком на уровне B2+. Желательно: — Опыт работы с Vue.js. — Знакомство с CRDT, мультиплеерными системами или слоями коммуникации в реальном времени. — Опыт участия в проектах с открытым исходным кодом. — Предыдущий опыт работы с движками рабочих процессов, инструментами для разработчиков или SaaS, связанным с инфраструктурой. Условия: — Удаленная работа с возможностью релокации в Германию (виза спонсируется). — Конкурентоспособная компенсация и долевое участие в компании. — Щедрый отпуск: 30 дней в Европе, 20 дней в США, плюс государственные праздники. — Комплексные медицинские и оздоровительные льготы, включая 401(k) с 4% взносом в США. — Ежегодный бюджет на обучение €1000 и неограниченный бюджет на AI-инструменты. — Ежемесячная поддержка в размере $100 для проектов с открытым исходным кодом, которые вам важны.

Задачи: — Владеть и развивать основные примитивы фронтенд-платформы для обеспечения масштабируемости и поддерживаемости конструктора рабочих процессов. — Проектировать опыт построения на основе canvas и реализовывать совместную работу в реальном времени с использованием WebSockets и CRDT. — Оптимизировать производительность рендеринга и поведение во время выполнения для сложных, высокопроизводительных пользовательских интерфейсов. — Усиливать платформенные контракты, системы плагинов и общий опыт разработчиков фронтенда (DX). — Принимать технические решения через RFC и сотрудничать с инженерами продукта, QA и сообществом с открытым исходным кодом. Требования: — Опыт создания архитектурно сложных фронтенд-продуктов, таких как инструменты на canvas, совместные редакторы или приложения в реальном времени. — Глубокие знания TypeScript и понимание измерения и профилирования производительности. — Подтвержденный опыт владения значимыми фронтенд-системами, ведения миграций или реархитектуры сложных областей продукта. — Наличие права работать в Европе или США. — Владение английским языком на уровне B2+. Желательно: — Опыт работы с Vue.js. — Знакомство с CRDT, мультиплеерными системами или слоями коммуникации в реальном времени. — Опыт участия в проектах с открытым исходным кодом. — Предыдущий опыт работы с движками рабочих процессов, инструментами для разработчиков или SaaS, связанным с инфраструктурой. Условия: — Удаленная работа с возможностью релокации в Германию (виза спонсируется). — Конкурентоспособная компенсация и долевое участие в компании. — Щедрый отпуск: 30 дней в Европе, 20 дней в США, плюс государственные праздники. — Комплексные медицинские и оздоровительные льготы, включая 401(k) с 4% взносом в США. — Ежегодный бюджет на обучение €1000 и неограниченный бюджет на AI-инструменты. — Ежемесячная поддержка в размере $100 для проектов с открытым исходным кодом, которые вам важны.