Staff Software Engineer (Java) - AI & Developer Experience (f / m / d)

What You Will Do Daily :

• Build the Real-Time Feedback Loop . You will design and implement intelligent guidance systems that proactively steer both developers and AI agents toward secure patterns. Your mission is to ensure that security flaws and architectural drift are eliminated before a PR is opened.
• Lead the Technical Evolution . You’ll drive architectural decisions for the IDE Extensions and their backend. You will solve for hard constraints : managing memory and CPU footprint, providing low-latency responses, and ensuring we never block the UI thread to protect the engineer's flow state.
• Architect the "Context Engine" for AI Agents . You will contribute to the development of the Sonar MCP Server and Sonar CLI, allowing local AI Agents (like Cursor, GitHub Copilot, Claude Code, etc.) to "ask" for project rules and security context before they generate code.
• Champion a Unified Experience . You will ensure our tools feel "native" in every IDE while sharing a robust logic core. You will bridge the gap between platform-specific implementations (TypeScript / C#) and our shared backend (Java) to prevent feature fragmentation across the ecosystem.
• Act as a Technical "Force Multiplier." Beyond writing code, you’ll mentor the squad through design reviews and collaborate with the Code Quality and Security teams to ensure our static analysis engine runs efficiently in a live, local environment.

The Experience You Will Need :

Why You Will Love It Here :

Benefits of Working With Sonar :

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. All offers of employment at Sonar are contingent upon the precise results of a comprehensive background check and reference verification conducted before the start date. Applications that are submitted through agencies or third party recruiters will not be considered.