Staff Full Stack Engineer (Java, React)

Genève · GenevaEmployee / Full-Timelead
OtherFrontend EngineeringFull Stack EngineerFull Stack Engineer Python + React
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Quick Summary

Overview

Who is Sonar? Sonar is driving the future of agent-centric software development. As the leader in AI code review and verification,

Technical Tools
OtherFrontend EngineeringFull Stack EngineerFull Stack Engineer Python + React
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 member of one of our engineering teams, you'll be a key player in making SonarQube Server and Cloud the best tools for Code Quality and Security, providing new features to deliver high quality and powerful products and services that help our users write better software. Our team specializes in delivering features for large customers on our enterprise plans.
 
You will have the opportunity to see your features come to life in Production with short iteration loops. While keeping our roadmap and business priorities in mind, you will be able to have a high impact on the software that we own and develop.
 
By joining us you will bring your experience and expertise to help push our product to its next stage of evolution and fulfill the needs of our large user and customer base.
  • Partner with Product Managers, UX designers, and EMs to define impactful features and elevate product usability.
  • Drive end-to-end feature development with a strong focus on user experience, ensuring quality through comprehensive unit and integration testing.
  • Architect and guide the technical direction of our cloud-based products, ensuring scalability, reliability, and cost-effectiveness.
  • Take ownership of the team's delivery ability, proactively aiming at successful completion of initiatives.
  • Own the release lifecycle, including deployment, monitoring, and performance optimization of new features in production.
  • Act as a technical point of contact to resolve complex, high-priority production issues impacting our features.
  • Provide technical mentorship, coaching engineers to increase their autonomy, system understanding, and skills.
  • Champion and contribute to efficient development processes.
  • Define and influence the team's long-term technical roadmap and short-term objectives.
  • Initiate and lead significant cross-functional engineering initiatives.
  • Design and execute high-value experiments.
  • 8+ years of experience as a Software Engineer.
  • Proven experience as a Staff Engineer, Tech Lead or equivalent leadership level.
  • Practical experience with both backend (Java) and frontend web development (JS/TS and React).
  • Excellent abilities of problem solving, and collaborative technical decision-making.
  • Developing clean and maintainable code, having design patterns and application’s architecture in mind.
  • Advanced knowledge of engineering processes, software architecture, and systems optimization.
  • Demonstrated expertise in systems resilience and adopting operational best practices.
  • Excellent technical skills and a good understanding of Computer Science fundamentals.
  • Experience architecting cloud-native applications on AWS.
  • Experience with relational RDBMS (such as Postgres) and SQL.
  • Code Quality practices (CI/CD, automated testing), constructive code reviews.
  • Extensive hands-on experience with experimentation, incorporating customer feedback into the development cycle. 
  • Practical experience with distributed systems that serve millions of users.
  • This role is based in Geneva. We are unable to consider candidates unwilling to be in Geneva, but we are willing to relocate the right candidate.
     

    Listing Details

    Posted
    January 9, 2026
    First seen
    March 26, 2026
    Last seen
    April 21, 2026

    Posting Health

    Days active
    26
    Repost count
    0
    Trust Level
    31%
    Scored at
    April 21, 2026

    Signal breakdown

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    Sonarsource

    SonarSource SA delivers innovative tools for code quality and security, serving millions of developers worldwide.

    Employees
    350
    Founded
    2008
    View company profile
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    SonarsourceStaff Full Stack Engineer (Java, React)