Full Stack Engineer

Who is Sonar? Sonar is driving the future of agent-centric software development. As the leader in AI code review and verification, we solve a critical problem: ensuring that software generated by AI-assisted developers or autonomous agents is reliable, secure, and maintainable. Integrating seamlessly with Claude Code, Codex, Cursor, GitHub Copilot, Gemini, and Devin, we help over 75% of the Fortune 100 build trusted, reliable, compliant software. Customers who use Sonar are 44% less likely to report an outage due to AI-generated code. We believe code verification is the critical missing link in the Agent-Centric Development Cycle (AC/DC). Industry giants like Nvidia, ServiceNow, Booking.com, Goldman Sachs, AstraZeneca, and Ford Motor Company.count on us to provide independent, explainable, consistent review and governance of their AI-generated code via products like: SonarQube: The world’s leading AI code review and verification platform. SonarQube Foundation Agent: Currently topping the leaderboards for agentic software repair. SonarSweep & Sonar Context Augmentation: Providing the enterprise-grade context and constraints agents need to be truly effective. Our team operates across global hubs in Austin, Bochum, Dubai, Geneva, London, Singapore, Tokyo, and Washington D.C. We move with a mindset we call CODE: Committed to our customers and community. Obsessed with quality. Deliberate in our decisions. Effective as one team. With over $400M in revenue and profitable, fast-paced growth, we are building the backbone of the AI software revolution. If you’re hungry to have an impact, want to build at a fast pace, and ready to work at the forefront of AI, we want to hear from you. Position description As a full stack engineer at Sonar, you will deliver end‑to‑end product features across backend services and web frontends that directly improve key user and business outcomes. You will help evolve your squad’s architecture to ensure it remains reliable, performant, and secure as we scale. You will raise the engineering bar through high standards for code quality, automated testing, and delivery practices. You will operate as an AI-native engineer who uses AI tools programmatically - accelerating routine tasks while maintaining full ownership of design, correctness, and security. We value diversity, equity, and inclusion At Sonar, we believe that our diversity is our strength. We are a global company that values and respects different backgrounds, perspectives, and cultures. We are committed to fostering a diverse and inclusive work environment where everyone feels valued and empowered to contribute their best. We are proud to be an equal opportunity employer and welcome all qualified applicants, regardless of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. If you need any accommodation, please reach out to us at hiring@sonarsource.com. All offers of employment at Sonar are contingent upon the results of a comprehensive background check and reference verification conducted before the start date. We do not currently support visa candidates in the US. Applications that are submitted through agencies or third party recruiters will not be considered. • Design and implement features across the stack: backend services and APIs, frontend components and flows, and the integration between them. • Collaborate with Product Managers, UX designers, and other engineers to clarify problems, propose solutions, and break the work into incremental, shippable slices. As the work is done, you will also help raise awareness of problems across the team. • Own the delivery lifecycle of your work: automated tests, CI pipelines, deployment, and follow‑up on metrics and production behavior. • Use AI assistants pragmatically to speed up low‑level tasks (boilerplate, refactorings, test scaffolding) while keeping full responsibility for architecture and quality. • Review code and participate in design discussions , providing clear and constructive feedback - including on AI‑generated code. • Improve the systems and pipelines that allow AI-generated code to be safely integrated into production. • Identify and tackle pragmatic refactoring opportunities and technical debt to improve maintainability, performance, or developer experience. • Mentor teammates in both technical excellence and effective AI-native workflows. • Share responsibility for service availability with your team , collaborate with customer facing teams to investigate issues, and participate in on call rotations. • 5+ years of experience building and operating web‑based products in production cloud environments. • Strong backend skills in Java (our core backend language) or an alternative backend focused language, such as Go or Python. • Experience designing, implementing and consuming HTTP APIs . • Solid frontend experience with a modern JS/TS stack (e.g., React or similar), including…