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 Senior Full-Stack Engineer for internal applications, you will be the engineering owner of custom solutions and integrations that connect our core business platforms (e.g., Salesforce, Stripe, NetSuite, licensing systems, etc.). You will be responsible for the entire lifecycle of these solutions—from architecture and design to implementation, deployment, monitoring, and continuous improvement. Your work (reliable, scalable, performant and secure applications) and skills (ability to translate complex business needs, coupled with a strong sense of ownership, urgency and partnership) will make you a trusted partner who drives significant efficiency and process improvements for the company. 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 [email protected]. 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. What you will do Design, Build & Maintain Integrated Internal Applications Own the end-to-end lifecycle of internal software applications and integrations: architecture, coding, testing, deployment, and maintenance. Translate business requirements into robust, scalable technical designs, including data models, APIs, system architecture, and UI flows where relevant. Implement full-stack features: write clean, efficient, and maintainable code for both back-end and front-end components; design and manage persistence layers; integrate with third‑party APIs (e.g., Salesforce, Stripe) and internal services. Build security & compliance into the design, incorporating data protection and regulatory requirements (e.g., GDPR) from the start, and collaborating with IST, ITOps, and Legal to ensure adherence to standards. Act as a Technical Partner to Business Stakeholders Collaborate with business stakeholders (e.g., Finance, Sales, HR, Business Technology colleagues) to clarify requirements, challenge assumptions, and co‑design pragmatic, value‑driven solutions. Support and guide User Acceptance Testing (UAT): provide technical support during UAT, address defects quickly, and ensure the delivered solution truly solves the underlying business problem. Communicate clearly on feasibility, trade‑offs, and timelines, serving as the technical point of contact and managing scope to protect solution integrity and production stability. Own the Full Development & Operational Lifecycle Implement and operate CI/CD pipelines to achieve reliable, frequent releases with a low change‑failure rate. Write and maintain unit, integration, and end‑to‑end tests to ensure high software quality and reduce regressions. Provide ongoing production support for the applications you own, including bug fixes, performance tuning, refactoring to address technical debt, and planned feature evolution based on user feedback and strategy. Document architecture and decisions clearly (e.g., in Confluence/Xtranet and Atlas), so the broader team can understand, operate, and extend your work. Ensure System Health, Monitoring & Incident Response Implement comprehensive monitoring and alerting for all owned applications, with meaningful KPIs and dashboards that surface issues before they become incidents. Serve as the primary on‑call engineer (as part of a rotation) for your applications, leading incident investigation and coordinating with other teams when issues occur. Run blameless post‑mortems after critical incidents, identify root causes, and define action items that meaningfully reduce recurrence. Experience and qualifications 5+ years (tbc) as a Full-Stack Engineer building business‑critical applications and integrations. Strong proficiency in at least one modern back‑end technologies (e.g. TypeScript, NodeJS), in AWS environments. Proven experience designing and implementing integrations between SaaS systems (e.g., CRM, billing, payments, licensing, ERP) with robust error handling and observability. Solid understanding of software architecture and design principles, including how to design for scalability, maintainability, and operational robustness over time. Demonstrated ability to build secure and compliant solutions, with an understanding of data protection concepts (e.g., GDPR) and secure coding practices. Hands‑on experience with CI/CD, automated testing, and modern SDLC practices (e.g., Git-based workflows, code reviews, trunk‑based or similar). Familiarity with monitoring, logging, and incident management for production services.

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