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Location: Berlin (Germany) Join us as a (Senior) Full Stack Developer - Web (f/m/d) in Berlin Our Story We are looking for a Senior Full Stack Developer (Web Platform) to help shape and scale thinkcell’s web platform and enable multiple teams to efficiently manage and publish content. This is not a role for someone who only wants to work within a fixed web stack or maintain existing templates. We are looking for a web engineer who enjoys solving complex technical problems, making sound architectural decisions, and building systems that remain robust and maintainable as requirements evolve. You will work across frontend and backend, improve the technical foundation of our web platform, and help us build scalable solutions that enable our teams to manage and publish content. Along the way, you will collaborate closely with stakeholders across design, marketing, product and engineering but with strong ownership over technical quality, long-term maintainability, and the overall direction of the platform. What you will do Design, build, and evolve our web platform features across front-end and CMS back-end. Solve complex technical problems in a pragmatic way, balancing speed of delivery with long-term maintainability Drive architectural improvements that make our web ecosystem more robust, scalable, and easier to work with Build and improve our back-end functionality in PHP and Laravel for integrations, dynamic features, and internal tooling Extend and optimize our CMS and publishing workflows to support efficient content operations without compromising technical quality Improve performance, Core Web Vitals, accessibility, and technical SEO foundations across the platform Work on the evolution of our current web architecture, while also challenging existing approaches when better solutions exist Collaborate with design, marketing, product, and engineering teams to turn business requirements into well-structured technical solutions Interface with back-end systems written in C++, ensuring reliable and efficient data exchange across system boundaries Identify opportunities to improve developer experience, reduce complexity, and raise the overall engineering standard of the platform Take ownership of technical tasks and help define best practices for modern web development at think-cell What we are looking for Strong experience building and shipping production-grade web platforms, applications, or systems A proven ability to solve non-trivial technical problems and work confidently in complex web related codebases Strong full stack engineering skills, with solid backend experience in PHP, Laravel, or similar technologies and a frameworks Strong frontend fundamentals, including HTML, CSS, JavaScript and modern approaches to building maintainable user interfaces Good judgment when making architectural and technical trade-offs A pragmatic mindset: you know when to build for flexibility and when to keep things simple Curiosity and confidence to work with unfamiliar technologies or domains when needed A strong sense of ownership and responsibility for code quality, maintainability, and technical outcomes Experience collaborating across disciplines and communicating clearly with technical and non-technical stakeholders in English Nice to have Experience with Statamic CMS Experience with static site generation challenges Experience with Deployment Tools such as Jenkins or similar tools Familiarity with Tailwind, Alpine.js, or similar frontend tools Experience improving performance-critical, SEO-relevant, or content-heavy platforms Familiarity with Python for automation or tooling Experience integrating with non-web backend systems or services Our Values As part of our team, you will embody and help shape the following principles that define us: Forward Thinking : We embrace change and challenge the status quo. Ownership : We take pride in our work and learn from our mistakes. Customer First : We prioritize delivering lasting value. Unified Team : We foster collaboration, respect, and integrity. Strive for Excellence : We set ambitious goals and pursue quality. Why is thinkcell the right place for you? We empower over 1.3 million users across 35,000 companies, including top consulting firms and major global enterprises. With offices in Berlin, Munich, Denver, Boston, London, Tokyo, and Dubai, we’re a diverse team of over 220 people, committed to innovation and excellence. think-cell is more than a job – it's a chance to be part of an innovative, inclusive team that values collaboration and growth. We encourage applicants from all backgrounds to apply. Together, we can shape the future of productivity software. We can’t wait to see what you’ll bring to the team!

Location: US / Remote Workplace: remote About the Company Founded in 2018 by professors of Yale University and Columbia University, CertiK is a pioneer in blockchain security, utilizing best-in-class AI technology to secure and monitor blockchain protocols and smart contracts. CertiK’s mission is to secure the cyber world. Starting with blockchain, CertiK applies cutting-edge innovations from academia into enterprise, enabling mission-critical applications to be built with security and correctness. CertiK is one of the fastest growing and most trusted companies in blockchain security and has become a true market leader. Our clients include leading projects such as Aave, Polygon, Binance Smart Chain, Yearn, and Chiliz. Our investors include top VCs like Tiger Global, Coatue Management, Shunwei Capital and Hillhouse Capital as well as industry leaders like Coinbase Ventures and Binance. About the Position The primary responsibility of this role is contributing to CertiK’s security-related services at the intersection of cybersecurity and blockchain. CertiK’s offerings include security consulting, security reviews, and security auditing of smart contracts and blockchains, alongside penetration testing and various verification processes. As a Security Engineer at CertiK,
, You’ll discover and analyze security vulnerabilities in blockchain smart contracts, summarize attacked vulnerabilities, and design feature code analysis tools. You’ll also stay up-to-date with analysis tools and new technology trends to further strengthen CertiK’s security offerings and expand our services. Responsibilities Participate in blockchain smart contract audits, identifying, analyzing, and addressing security vulnerabilities. Help evaluate and define attack models for blockchain security. Summarize and extract key characteristics from exploited code to build and maintain tools for feature code analysis. Research and work with different analysis tools, continually learning and adapting to emerging technologies in the space. Requirements A bachelor’s degree (or higher) in full-time education, preferably in a science or engineering field, plus 3+ years of work experience. Familiarity with fundamental information security concepts. Proficiency in at least one of the following languages: Solidity, Go, Rust, C++, Python, or Node.js, along with a solid grasp of common algorithms. A demonstrated ability to function in an English working environment with strong English reading and writing skills. A passion for blockchain technology and a drive to learn and adapt to new technologies. Bonus Points Experience working with production pipelines—maintaining or developing them. Familiarity with static code analysis (e.g., Syntax Analysis, Semantic Analysis, Taint analysis). Exposure to popular blockchain-related platforms and technologies (e.g., Ethereum, Hyperledger, Cosmos). Prior knowledge of blockchain smart contracts, security audits, and associated best practices. Hands-on blockchain experience such as evaluating risks for blockchain projects or analyzing on-chain security events. Target annual salary for this role performed is $90,000 - $150,000 if based in the US. The exact compensation at which this job is filled will be determined by the skills and experience of qualified candidates. CertiK accepts applications for this position on an ongoing basis.   CertiK is proud to offer medical, vision, and dental insurance, 401(k) plan with company matching, life and accidental death and dismemberment insurance, HSA (with high deductible plan), FSA, and other benefits to all full-time employees, along with flexible paid time off and holidays. CertiK also offers a variable commission program for business development sales roles.   In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.   CertiK is proud to be an equal opportunity employer. We will not discriminate against any applicant or employee on the basis of age, race, color, creed, religion, sex, sexual orientation, gender, gender identity or expression, medical condition, national origin, ancestry, citizenship, marital status or civil partnership/union status, physical or mental disability, pregnancy, childbirth, genetic information, military and veteran status, or any other basis prohibited by applicable federal, state or local law.   CertiK will consider for employment qualified applicants with criminal histories in a manner consistent with local and federal requirements. https://www.eeoc.gov/sites/default/files/migrated_files/employers/poster_screen_reader_optimized.pdf   All CertiK employees are expected to actively support diversity on their teams, and in the Company.

Location: Remote-Friendly (Travel-Required) | San Francisco, CA | Seattle, WA | New York City, NY About Anthropic Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems. About the role: Anthropic's Application Security team secures the systems that build, serve, and increasingly are Claude. The attack surface is unlike most AppSec work: multi-agent orchestration, sandboxed code execution, agents holding delegated credentials, untrusted tool output crossing trust boundaries — problems with little prior art and no off-the-shelf playbook. The way the team works is also different. We use Claude as our primary tool across every part of the job: it drives our static analysis, drafts and fixes vulnerabilities as pull requests, performs first-line bug bounty triage, and assists threat modeling for design reviews. The human work is the judgment layer — system-level reasoning, deciding what matters, and building the next thing the model can't do yet. This is a builder's role on a senior team. We hire engineers who ship production systems and clear a hands-on threat-modeling bar — people who can find the vulnerability but would rather build the system that finds them all. Every engineer owns a system end-to-end, and the team's work has shaped customer-facing product security — including Claude Code's security review tooling, its security guidance plugin, sandboxing, and auto mode. Key responsibilities: Design, build, and operate Claude-powered security systems — LLM-driven code analysis, automated vulnerability remediation, AI-assisted threat modeling — and own one or more of them end-to-end, including the cross-functional relationships that come with it Lead secure design reviews and threat modeling for novel AI systems, identifying risks that don't map to existing frameworks Evolve a public bug bounty program where automation handles routine triage and root-cause work, and engineers handle escalations and corner cases Partner with Product, Infrastructure, and Research teams as an embedded security owner — consulting on launches, shaping architecture, and influencing decisions where security is the constraint Share an operational on-run rotation with the rest of the team — bounty escalations, incident response, and launch consults on systems serving Claude in production Minimum qualifications: Hands-on application and infrastructure security experience, including cloud and containerized environments Production-quality coding ability in at least one of Python, Go, Rust, or TypeScript, with a track record of building durable systems rather than one-off scripts Practical threat-modeling and vulnerability-identification skills — you've found and reasoned about real bugs in real systems, even if breaking isn't your primary mode Demonstrated ability to operate with high autonomy and ambiguity — comfortable being handed a problem and a lot of latitude rather than a spec Clear technical communication with both engineers and leadership Preferred qualifications: 7+ years in application security, security engineering, or security-focused software engineering Already use LLMs as a core part of how you work, with opinions about where they help and where they don't Experience securing agentic, code-execution, or LLM-integrated systems specifically Prior ownership of a bug bounty program, vulnerability disclosure program, or vulnerability-management infrastructure at scale Background building security automation or developer-facing security tooling Offensive security or penetration testing experience Representative projects An increasingly autonomous vulnerability pipeline — LLM-driven code analysis finds the issue, scores it for real exploitability, and opens the fix PR, with humans as the review step rather than the author Bug bounty operations where Claude handles first-line triage and drafting, and engineers focus on the reports that actually need judgment AI-assisted threat modeling that generates intake questions, drafts the model, and recommends which design reviews need a human in the room Automated dependency vulnerability remediation across Anthropic's codebase The company-wide vulnerability dashboard and SLA enforcement layer every engineering team works against Threat models and security architecture for agentic product surfaces — code execution sandboxing, agent identity and delegated auth, tool-use boundaries The annual compensation range for this role is listed below. For sales roles, the range provided is the role’s On Target Earnings ("OTE") range, meaning that the range includes both the sales commissions/sales bonuses target and annual base salary for the role. Annual Salary: $320,000 — $485,000 USD Logistics Minimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experience Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience Minimum years of experience: Years of experience required will correlate with the internal job level requirements for the position Location-based hybrid policy: Currently, we expect all staff to be in one of our offices at least 25% of the time. However, some roles may require more time in our offices. Visa sponsorship: We do sponsor visas! However, we aren't able to successfully sponsor visas for every role and every candidate. But if we make you an offer, we will make every reasonable effort to get you a visa, and we retain an immigration lawyer to help with this. We encourage you to apply even if you do not believe you meet every single qualification. Not all strong candidates will meet every single qualification as listed.  Research shows that people who identify as being from underrepresented groups are more prone to experiencing imposter syndrome and doubting the strength of their candidacy, so we urge you not to exclude yourself prematurely and to submit an application if you're interested in this work. We think AI systems like the ones we're building have enormous social and ethical implications. We think this makes representation even more important, and we strive to include a range of diverse perspectives on our team. Your safety matters to us. To protect yourself from potential scams, remember that Anthropic recruiters only contact you from @anthropic.com email addresses. In some cases, we may partner with vetted recruiting agencies who will identify themselves as working on behalf of Anthropic. Be cautious of emails from other domains. Legitimate Anthropic recruiters will never ask for money, fees, or banking information before your first day. If you're ever unsure about a communication, don't click any links—visit anthropic.com/careers directly for confirmed position openings. How we're different We believe that the highest-impact AI research will be big science. At Anthropic we work as a single cohesive team on just a few large-scale research efforts. And we value impact — advancing our long-term goals of steerable, trustworthy AI — rather than work on smaller and more specific puzzles. We view AI research as an empirical science, which has as much in common with physics and biology as with traditional efforts in computer science. We're an extremely collaborative group, and we host frequent research discussions to ensure that we are pursuing the highest-impact work at any given time. As such, we greatly value communication skills. The easiest way to understand our research directions is to read our recent research. This research continues many of the directions our team worked on prior to Anthropic, including: GPT-3, Circuit-Based Interpretability, Multimodal Neurons, Scaling Laws, AI & Compute, Concrete Problems in AI Safety, and Learning from Human Preferences. Come work with us! Anthropic is a public benefit corporation headquartered in San Francisco. We offer competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space in which to collaborate with colleagues. Guidance on Candidates' AI Usage: Learn about our policy for using AI in our application process.

Location: Cork, Ireland Workplace: onsite We are seeking a dedicated and detail-oriented Sports Live Data Monitor/Content Moderator to join our team. In this role, you will be responsible for monitoring our client's Sports App for errors and carrying out research about leagues and players. Your primary goal will be to ensure the accuracy of both live and static data, promptly fixing issues as they arise. Responsibilities: - Monitor Live Sports Data across a wide range of European and American sports, leagues, and teams to ensure the accuracy of both live and static data. - Track and update statistics in real-time within our sports application. - Identify, mitigate, and escalate potential issues, following documented workflows. - Stay updated on recent transactions, games, and statistics across a wide range of leagues Qualifications: - Passion for sports and a deep understanding of various sports, leagues, and teams. - Strong attention to detail. - Ability to monitor, track, and escalate live sports data. - Ability to handle repetitive tasks. - Native or near-native fluency in the English language. - Previous experience in sports writing or editing is a plus. Requirements: Willingness to work flexible hours, including afternoons/night shifts, weekends as needed. Position details:  - Location: 100 % onsite at the office in Hollyhill, Cork, Ireland - Salary: €35,000/year - Contract: 1 year with possibility of extension - Schedule Availability: Full-time (40 hours per week). Schedule Availability: 40h/week with 30 min of unpaid lunch break Tuesday-Saturday shift, starting at 7am and finishing at 3:30pm. Sunday-Thursday shift, starting at 7am and finishing at 3:30pm. Shifts will depend on the Client's needs and are not flexible. However, working later hours could be a possibility. e.g 10:30 am to 7:30 pm. Desired Start Date: As soon as possible

Location: Home based - Worldwide Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the world's leading public cloud and silicon providers, and industry leaders in many sectors. The company is a pioneer of global distributed collaboration, with 1200+ colleagues in 75+ countries and very few office-based roles. Teams meet two to four times yearly in person, in interesting locations around the world, to align on strategy and execution. The company is founder-led, profitable, and growing. Canonical is looking for exceptional security-focused software engineers to be integrated across product teams. While they also contribute to the product as engineers, their primary focus is to challenge the entire team to think more deeply about security through state-of-the-art practices such as threat modeling, table-top exercises, architecture and design reviews, static analysis tools, and fuzzing, among others. These roles encompass all aspects of product security, including feature development, vulnerability response, proactive security, and open source community participation. Engineers in these roles collaborate closely with other Canonical teams, customers, and partners across the open source ecosystem. Each product engineering team at Canonical reserves one or two openings for security-oriented software engineers. We also develop a number of products driven entirely by security needs, such as our AppArmor kernel investments and the Ubuntu Security Guide (USG). As the publisher of Ubuntu, we also handle long-term security response for the entire operating system and open source ecosystem. Working with tens of thousands of upstreams means that we need to be fluent in every major programming language and design, build, and adopt sophisticated tools that enable us to work at scale and speed with confidence. Apply here if you are an exceptional security-focused software engineer, passionate about open source, and excited by Canonical's products and mission. This role requires the ability to be productive in a globally distributed team through strong self-discipline and motivation. It also involves mandatory international travel at least twice a year, typically for one week. Location: Worldwide, this is a globally remote role What you'll do Security roles might tackle any of the following: Define, implement, and document new security features Lead security-focused initiatives within a product engineering team Analyze, fix, and test vulnerabilities in open source software Contribute to Ubuntu and upstream open source projects to benefit the community Audit and analyze source code for vulnerabilities Integrate new tools into our security infrastructure, pipelines, and processes Achieve and retain various security certifications Extend and enhance Linux cryptographic components to meet country-specific compliance requirements, such as FIPS and Common Criteria (CC) certifications Work with external partners to develop Center for Internet Security (CIS) benchmarks Design and develop hardening automation for Ubuntu Stay up to date with trends and developments in the security industry Develop, test, and maintain new software capabilities Provide guidance and support to other engineering teams on security best practices What we are looking for in you An exceptional academic track record from both high school and university Undergraduate degree in Computer Science or STEM, or a compelling narrative about your alternative path A track record of going above and beyond expectations Thorough understanding of the common categories of security vulnerabilities and how to fix them Knowledge of modern software engineering techniques Familiarity with open source development tools and methodologies Skill in one or more of C, C++, Python, Go, Rust, Java, Ruby, PHP, or JavaScript/Typescript Experience as a security champion Experience driving security within a wider SSDLC process Professional written and spoken English Experience with Linux (Debian or Ubuntu preferred) Excellent interpersonal skills, curiosity, flexibility, and accountability Passion, thoughtfulness, and self-motivation Excellent communication and presentation skills Results-oriented, with a personal drive to meet commitments Optional skills we also value Clear and effective communication with both the team and Ubuntu community members Experience working with the Linux kernel Experience with security certifications and knowledge of FIPS and/or Common Criteria (CC) Experience with OVAL (Open Vulnerability Assessment Language) Knowledge of cryptographic modules such as OpenSSL and Libgcrypt Knowledge of low-level Linux cryptography APIs Demonstrated ability to learn quickly Performance engineering experience What we offer you We consider geographical location, experience, and performance in shaping compensation worldwide. We revisit compensation annually (and more often for graduates and associates) to ensure we recognize outstanding performance. In addition to base pay, we offer a performance-driven annual bonus. We provide all team members with additional benefits, which reflect our values and ideals. We balance our programs to meet local needs and ensure fairness globally. Distributed work environment with twice-yearly team sprints in person Personal learning and development budget of USD 2,000 per year Annual compensation review Recognition rewards Annual holiday leave Maternity and paternity leave Employee Assistance Programme Opportunity to travel to new locations to meet colleagues Priority Pass, and travel upgrades for long haul company events About Canonical Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open source projects and the platform for AI, IoT and the cloud, we are changing the world on a daily basis. We recruit on a global basis and set a very high standard for people joining the company. We expect excellence - in order to succeed, we need to be the best at what we do. Canonical has been a remote-first company since its inception in 2004.​ Working here is a step into the future, and will challenge you to think differently, work smarter, learn new skills, and raise your game. Canonical is an equal opportunity employer We are proud to foster a workplace free from discrimination. Diversity of experience, perspectives, and background create a better work environment and better products. Whatever your identity, we will give your application fair consideration. #LI-remote

Location: Home Based - Americas; Home based - EMEA Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation and IoT. Our customers include the world's leading public cloud and silicon providers, and industry leaders in many sectors. The company is a pioneer of global distributed collaboration, with 1000+ colleagues in 70+ countries and very few office based roles. Teams meet two to four times yearly in person, in interesting locations around the world, to align on strategy and execution. The company is founder led, profitable and growing. The mission of the LXD team is to build a next-generation private cloud infrastructure, combining KVM, Ceph, and SDN technologies to create a data center scale cloud that 'just works' and provides a mission-critical cloud for edge and core enterprise deployments. We are hiring a Golang software engineer to work on the low level Go codebase sitting between our REST API and the low level C libraries used to manage containers and virtual machines. We are looking for system-level developers with experience in design and data management/modeling. LXD components span the entire software stack from low-level kernel features to the upper level management API/CLI. Our most effective engineers are fluent in all these layers, and able to anticipate the consequences of design and engineering choices elsewhere in a complex distributed system. This is an opportunity for someone who wants to have a meaningful impact on modern cloud computing technologies. Canonical offers a fun, fast-paced team environment and a career full of learning and development. Location : This is a remote position available in EMEA and the Americas. What you will focus on Design, implement and document system level Go code Model data, design database schema and implement data storage in a dqlite (SQL) database Maintain code quality through static analysis, unit and system tests Collaborate proactively with a distributed team Discuss ideas and collaborate on finding good solutions Work from home with global travel 2 to 4 weeks/year for internal and external events What we are looking for in you You have experience programming in Go and C You are knowledgeable in networking and storage technologies You have experience with two or more of: cloud computing, virtualisation, containers, distributed systems, open source community You are curious, flexible, articulate and accountable You value soft skills and are enterprising, thoughtful and self-motivated You have a bachelor’s or equivalent in Computer Science, STEM or similar degree What we offer you We consider geographical location, experience, and performance in shaping compensation worldwide. We revisit compensation annually (and more often for graduates and associates) to ensure we recognise outstanding performance. In addition to base pay, we offer a performance-driven annual bonus. We provide all team members with additional benefits, which reflect our values and ideals. We balance our programs to meet local needs and ensure fairness globally. Distributed work environment with twice-yearly team sprints in person Personal learning and development budget of USD 2,000 per year Annual compensation review Recognition rewards Annual holiday leave Maternity and paternity leave Employee Assistance Programme Opportunity to travel to new locations to meet colleagues Priority Pass, and travel upgrades for long haul company events About Canonical Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open source projects and the platform for AI, IoT and the cloud, we are changing the world on a daily basis. We recruit on a global basis and set a very high standard for people joining the company. We expect excellence - in order to succeed, we need to be the best at what we do. Canonical has been a remote-first company since its inception in 2004.​ Working here is a step into the future, and will challenge you to think differently, work smarter, learn new skills, and raise your game. Canonical is an equal opportunity employer We are proud to foster a workplace free from discrimination. Diversity of experience, perspectives, and background create a better work environment and better products. Whatever your identity, we will give your application fair consideration. #LI-remote