FullStack Engineer

About the role

Who is Sonar?

Sonar enables organizations to ship agentic code with confidence. Code creation is abundant, but confidence is scarce. Our core platform, SonarQube, verifies over 750 billion lines of code every day, delivering agentic verification and governance for all code. Trusted by more than 7 million developers and 75% of the Fortune 100, including teams at Nvidia, ServiceNow, Booking.com, Goldman Sachs, AstraZeneca, and Ford Motor Company, Sonar enables organizations to reduce outages, improve security, and lower the cost and risk of agentic software development.

Founded in Geneva and now headquartered in Austin, Texas, Sonar has a global team working across offices and hubs, including Silicon Valley, London, Bochum, Barcelona, Singapore, Tokyo, and the Washington, D.C. area. At Sonar, we’re enabling enterprises to build agentic software factories that can move quickly while maintaining the control, consistency and evidence required to ship with confidence.

Position description:

You will be responsible for developing, deploying, and maintaining robust and scalable web applications that integrate seamlessly with our advanced AI models and agentic systems. You will work collaboratively with our software engineers, designers and researchers to deliver high-quality solutions. Your work will directly impact the efficiency and effectiveness of our AI products, enabling developers to spend less time fixing issues and more time innovating. You will contribute to the creation of scalable, reliable, and performant solutions that integrate seamlessly with our existing infrastructure.

What You Will Do: -

Design, develop, and maintain 0-to-1 applications for AI-powered solutions focusing on automation, high performance, scalability, and cost efficiency.

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Participate in all aspects of agile software development, from design to deployment.

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Build and integrate RESTful APIs to support dynamic web and cloud applications.

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Develop scalable backend services and databases to enhance application performance.

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Architect and design end-to-end systems optimized for speed and scale.

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Ensure responsive design and seamless user experience

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Maintain best practices by following TDD and ensuring unit/integration tests are synced

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Debug and troubleshoot reported issues and incorporate feedback from other stakeholders

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Participate in code reviews and provide constructive feedback to other developers

Experience and qualifications -

Bachelor’s degree (or equivalent) in Computer Science, Engineering, or related field.

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At least 3 years of experience as a Software Engineer or in a similar role.

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Experience working with Agentic technologies (e.g. Codex, Claude, CoPilot)