Ищем самостоятельного Lead Backend Developer, который сможет совмещать сильную техническую экспертизу с управлением backend-командой. Это hands-on роль: около 50% development / 50% technical leadership.
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We are looking for an experienced AI/Backend Developer to build an internal AI knowledge platform integrating Local LLMs, Box, and multiple external AI services. - Local LLM deployment on Mac Studio (Ollama or similar).
Location: Hamburg
Workplace: Hybrid
adjoe builds the technologies behind mobile apps growth and monetization. With our core product Playtime Arcade, we've become the global leader in rewarded advertising, an ad unit built on a simple premise: users earn real in-app rewards for engaging with new apps. The result is one of the most effective value exchanges in adtech, connecting advertisers and publishers with over 770 million users annually.
Engineering the sub-millisecond decision engine that powers 200 million daily ad interactions
The Demand Core team builds the infrastructure that determines which of our thousands of active advertising campaigns are relevant to a user the moment they open our ad unit Playtime. At our scale, system latency is a business failure, downtime means advertisers stop spending, users stop earning rewards, and publisher revenue stalls. You will build and operate the services that power these decisions 200 million times every day.
Go microservices load the active ad campaign catalog into memory, evaluating 40+ targeting constraints and 30+ real-time signals, geo, fraud status, budget caps to rank potential user performance in milliseconds. Beyond campaign distribution, the team owns the entire ad interaction chain: processing clicks, views, MMP postbacks from Adjust and AppsFlyer, and in-app events that trigger rewards. These events are broadcasted through a hybrid messaging architecture using SNS/SQS and Kafka, directly powering our advertiser dashboards, publisher reward payouts, and ad campaign scoring pipelines, all backed by DynamoDB.
Your Mission & Who We Are Looking For:
Production Golang Systems Expertise: You bring 5+ years of backend development experience, including at least 3 years writing Go in production distributed environments. You will build and maintain our +99% Go microservice architecture—interfacing with our TypeScript/React frontend—to reliably handle 2+ million daily publisher interactions and scale beyond hundreds of millions of monthly active users.
High-Throughput Event Streaming: You have hands-on experience designing asynchronous microservice communication using event buses like Kafka, SQS/SNS, and Kinesis. You will build pipelines to collect billions of daily API events and aggregate them into our data lake for sub-second querying.
High-Scale Data & API Optimization: You understand database internals and low-level web standards (HTTP protocol, Encoding, Regular Expressions). You will optimize queries across hundreds of terabytes of data across DynamoDB, MySQL, Druid, and Athena to reduce API response times and expose transparent, well-documented open APIs to enterprise partners.
Data Science & Algorithmic Integration: You quickly grasp complex technical topics and applied mathematics. You will partner directly with our Data Science team to translate and integrate machine learning algorithms into adjoe’s core application, optimizing real-time ad targeting.
Collaborative Technical Communication: You communicate fluently and precisely in spoken and written English. You will actively participate in peer code reviews and technical knowledge sharing across an international backend engineering team.
Plus: Infrastructure & Cloud Tooling: Hands-on experience with Terraform (Infrastructure as Code), Docker containerization, or serverless infrastructure.
🌎 We welcome applications from talent worldwide and provide relocation support to Hamburg, Germany for those ready to join our team.
What’s in It for You?
At adjoe, you’re not here to just close JIRA tickets, you’re helping build the infrastructure behind one of the most impactful platforms in adtech. The systems you work on will reach hundreds of millions of users and power billions of decisions every day.
Go Big. Own projects with impact on 770M users and push adtech boundaries.
Move Fast. Ship solutions multiple times a day, learn from results, and keep momentum.
Be Direct. Solve problems openly and collaborate across teams.
Thrive Together. Grow with a diverse, global team of people from over 40 different countries that learn from each other.
Have Fun. Celebrate wins, enjoy daily victories, and bring your energy.
We welcome applications from people who will contribute to the diversity of our company.
Гибридsenior🌎 We welcome applications from talent worldwide and provide relocation support to Hamburg, Germany for those ready to join our team
Не хотите искать каждый день?
Настройте подбор один раз, и подходящие вакансии будут сами приходить в Telegram.
Настройте подбор, и подходящие вакансии будут приходить в Telegram.
ЧЕМ ПРЕДСТОИТ ЗАНИМАТЬСЯ: Разрабатывать и поддерживать бэкенд-сервисы на Python 3.9+ с использованием GraphQL, REST API и WebSocket для обеспечения надежного взаимодействия с фронтендом. Проектировать и оптимизировать схемы данных в PostgreSQL и MongoDB, обеспечивая баланс между производительностью запросов и гибкостью хранения.
-Разработка ETL потоков на платформе Hadoop (Scala + Spark SQL). -Поиск возможностей оптимизации, повышение скорости расчета, эффективности использования вычислительных ресурсов.
-Разработка и поддержка высоконагруженных backend-сервисов на Java/Kotlin (версия Java от 11). -Проектирование архитектуры приложений, обеспечение высокой производительности и надежности сервисов.
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REMOTE GLOBAL | CSSSR Что предстоит делать: Участвовать в проектировании сервисов и предлагать локальные улучшения архитектуры и кода. Разрабатывать и поддерживать микросервисные компоненты в рамках общей архитектуры продукта.
Разработка co-pilot решения на базе данных RAG и применении LLM. Разработка и интеграция AI-агентов, исследование новых поверхностей взаимодействия с AI.
Location: CAN: Vancouver (333 Seymour St)
Workplace: Hybrid
The role / impact
You will focus on solving engineering problems at scale, moving beyond feature delivery to influence the architecture and implementation of distributed systems. By refactoring complex, monolithic systems and building high-quality, scalable software, your work ensures our platform remains robust and reliable for millions of global users.
As a senior member of the team, you will have the autonomy to make major code design decisions and contribute to global engineering standards. You will balance technical excellence with mentorship, acting as a role model and coaching others through complex technical challenges to help them grow.
The team / how they connect
You will join a collaborative environment where engineers, product owners, and designers work together using agile and delivery practices to ship meaningful code. The team prioritizes continuous learning and mastery, frequently participating in code reviews and knowledge-sharing sessions to maintain a high bar for technical craft.
The team is currently working on / Initially, you will focus on
- Modernizing systems by refactoring monolithic components into distributed, scalable architectures.
- Enhancing the developer experience through the maturation of CI/CD concepts, tooling, and TDD practices.
- Building and maintaining a diverse tech stack that includes C#,.Net, React, AWS, and Kubernetes.
- Developing and implementing technical solution designs that align with long-term engineering frameworks.
Where and how you can work
This role is based in our Vancouver office, where we embrace a hybrid working model. You will have the flexibility to work from home while joining the team in the office for "boost days" (1-2 days a week) to collaborate, socialize, and solve complex problems in person.
Here are some of the things we are looking for
- Proven experience delivering and operating complex, large-scale systems (distributed/high-availability environments), with strong fundamentals and the ability to ramp quickly across adjacent technologies (we’re tech-stack agnostic).
- You bring a growth mindset and a passion for proactively maintaining and sharing technical knowledge with your peers.
- A background in designing and building high-quality software within a range of languages and tools is essential.
- You possess the ability to lead major code design decisions and contribute to wider technical solutioning.
- Experience with modern engineering practices like automated testing, refactoring, and agile delivery is key to your success.
- You enjoy mentoring other engineers and helping them grow their technical skills through supportive coaching.
- A deep care for technical excellence and a drive to solve large-scale engineering challenges motivates your daily work.
Apply even if your experience isn't a perfect match! At Xero, we hire based on your skills, passion, and the unique perspective you can bring to enhance our culture and team. We are also tech stack agnostic, so please apply if you've worked with adjacent technologies.
Compensation Philosophy
At Xero, we value the impact and skills you bring to the team. We don’t just hire for a role; we invest in people. We believe in a Total Package philosophy - which means your value isn't just a single number on a paycheck. While base salary is a core component, we look at your compensation through a holistic lens that includes equity, performance incentives, and world-class benefits.
The base salary range for this role in Canada is $155,000 - $205,000 CAD.
Please note that this range represents base salary only. We believe in rewarding our people for their total contribution, which is why we look at compensation through a holistic lens. In addition to base pay, your total package may include:
- Variable Pay: Eligibility commissions or equity based on role and performance.
- Comprehensive Benefits: World-class health, wellness, and retirement programs.
- Xero Perks: Inside Xero https://careers.xero.com/inside-xero/benefits-wellbeing/ Explore our full suite of benefits, from wellbeing initiatives to professional development.
Individual pay is determined by various factors, including geography, level of experience, and the specific skills you bring to the role
Задачи:
— развитие плагинов и кодовой базы для VSCode и Theia
— разработка дополнительных инструментов (CLI, MCP, web back+front, и т.п.)
— интеграция Искусственного Интеллекта, разработка ИИ-агентов
— участие в планировании релизов, декомпозиции задач, контроле результата
— работа с командой: помощь коллегам, онбординг новых специалистов, и так далее
— создание и сопровождение дистрибутива продукта.
Требования:
— умение грамотно пользоваться TypeScript и его экосистемой
— опыт разработки веб-бэкенда или десктопных приложений на JS/TS
— опыт разработки веб-фронта на одном из современных фреймворков для JS/TS
— готовность изучать и использовать другие языки и технологии (Rust, Python, Go)
— умение работать с Git, инструментами CI/CD, терминальными утилитами
— умение работать как с использованием ИИ, так и без него.
Будет существенным плюсом:
— умение работать в режиме исследования (R&D), с высокой неопределенностью
— опыт в разработке IDE или плагинов для IDE (любая платформа – VSCode, IDEA, Zed…)
— опыт в разработке ИИ инструментов (харнессы, агенты, модели, и т.п.)
— опыт в разработке инструментов для разработчиков (компиляторы, отладчики, и т.п.)
— опыт использования разных языков (Rust, Python, Go).
Условия:
— годовой бонус и ежегодный пересмотр зарплаты
— расширенный ДМС с первого дня, страхование жизни, корпоративная пенсионная программа
— статус аккредитованной ИТ-компании со всеми преимуществами
— льготная ипотека для сотрудников, подписка Прайм с возможностью шеринга (совместного использования) на трёх близких, скидки от партнеров и сервисов группы компаний
— корпоративный университет Сбера, внутренняя образовательная платформа, участие в IT-конференциях
— 90 дней удаленной работы из любого региона РФ
— реферальная программа (бонус до 100 000 рублей).
Backend-разработчик, который пишет код руками и понимает, как устроены системы изнутри. · имеете коммерческий опыт разработки и проекты, которые можно показать;
Задачи:
— Java backend разработка, разработка API для мобильных и веб-приложений, middleware микросервисы.
— Внедрение нового функционала.
— Написание unit и интеграционных тестов.
— Оптимизация скорости работы приложений.
— Участие в разработке концепций, архитектурных решений и подходов.
— Участие в развитии CI/CD процессов.
— Проведение Code Review.
Условия:
— Оформление по ТК РФ, отпуск 28 календарных дней + 1 дополнительный оплачиваемый выходной.
— Гибридный формат работы в Москве (посещение офиса не более 3 раз в неделю).
— Возможность частичной или полной оплаты образовательных курсов в рамках профессиональной деятельности/компенсация спорта.
— Медицинская страховка.
— Мерч на корпоративные праздники.