Sonar

Full Stack Engineer (Java)

Reposted 4 Hours Ago

Easy Apply

Austin TX USA

Hybrid

Senior level

Artificial Intelligence • Cloud • Security • Software

Sonar is the trust & verification layer for AI and agentic coding and the industry standard for automated code review.

The Role

As a Full Stack Engineer you will develop and deliver product features across backend and frontend systems ensuring high standards for code quality and performance while using AI tools to enhance productivity.

Summary Generated by Built In

Who is Sonar?

Sonar helps prevent code quality and code security issues from reaching production amplifies developers' productivity in concert with AI assistants and improves the developer experience with streamlined workflows. Sonar analyzes all code regardless of who writes it — your internal team genAI or third parties — resulting in more secure reliable and maintainable applications. Rooted in the open source community Sonar’s solutions support over 30 programming languages frameworks and infrastructure technologies. Today Sonar is used by +7M developers and 400K organizations worldwide including the DoD Microsoft NASA MasterCard Siemens and T-Mobile.

We believe in developing great products that are supported by great internal teams and a strong culture. We are highly committed to and obsessed with the company users each other and our open source community. We have high standards and hold each other accountable for acting with positivity dedication thoughtfulness empathy and passion daily.

We are deliberate with our decisions with high clarity of intention. At the same time we feel extreme urgency and move forward quickly.

And lastly we are highly effective and operationally efficient. We operate collectively as One Team to accomplish our goals.

At Sonar CODE is more than just an acronym – it's a mindset that defines daily operations.

Why You Should Apply:

At Sonar we’re a group of brilliant motivated and driven professionals working hard to help supercharge developers to build better faster. Sonar helps to continuously improve code quality and code security while reducing developer toil. This means that developers can focus on doing more of what they love and less of what they don’t. Our solutions don’t just solve symptoms of problems – we help fix issues at the source – for all code whether it's developer-written AI-generated or from third parties.

We have a dynamic culture with employees worldwide and hub offices in the USA Switzerland the UK Singapore and Germany. Team members should be able to come to work every day work on a product they are proud of love what they do and feel energized by their peers. With our roots deep in the open source community we’re all about the mission: supercharge developers to build better faster.

The Impact You Will Have:

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.

What You Will Do Daily:

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.

The Experience You Will Need:

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 component design state management and testing.
Familiarity with databases and web infrastructure (relational storage caching messaging queues REST/JSON AuthN/Z).
Experience architecting cloud-native applications.
Hands-on experience with automated testing CI/CD and observability practices.
Experience evaluating and integrating AI‑assisted development tools into your workflow while maintaining high quality and security standards.
Extensive hands-on experience with experimentation incorporating customer feedback into the development cycle.
Practical experience with distributed systems that serve millions of users.

How you work:

Ownership and accountability: You feel responsible for the long‑term health and correctness of what you ship whether written by you or generated with AI assistance.
Collaborative by default: You communicate with clarity seek alignment early and view candid feedback as a tool for growth.
AI‑native mindset: You treat AI tools as collaborators—not oracles—validating their output understanding their limits and using them to focus on higher‑value design and problem‑solving.
Pragmatic and incremental: You balance architectural excellence with the need to deliver value quickly and iteratively.

Why You Will Love It Here:

Our culture and mission set us apart. We have a dynamic work culture that values respect and kindness and embraces the right to fail (and get right back up again!).
Great people make a great company. We value people skills as much as technical skills and strive to keep things friendly while still being passionate leaders in our domains.
We have a flexible work policy that includes 3 days in-office and 2 days work-from-home each week for those located near our office locations; some locations such as Dubai India Japan and Australia operate fully remotely.
We have a growth mindset. We love learning and believe continuous education is critical to our success. In an ever-changing industry new skills are necessary and we're happy to help our team acquire them.
As the leader in our field our products and services are as strong as our internal team members.
We embrace transparency with regular meetings cascading messages and updates on the growth and success of our organization.

Benefits of Working With Sonar:

Flexible comprehensive employee benefit package that is 90% paid by the company.
We encourage usage of our robust time-off allocations.
We offer an exciting 401(k) plan that has a 4% match fully vested on day one of participation.
Generous discretionary Company Growth Bonus paid annually.
Fully paid parking in the heart of downtown Austin Texas.
Global workforce with employees in 20+ countries representing 35+ unique nationalities.
We have an annual kick-off somewhere in the world where we meet to build relationships and goals 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.

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.

We do not currently support visa candidates in the US.

Applications that are submitted through agencies or third party recruiters will not be considered.

Top Skills

Ci/Cd

Http Apis

Java

Python

React

SQL

What the Team is Saying

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The Company

HQ: Austin TX

800 Employees

Year Founded: 2008

What We Do

Sonar provides the essential verification layer for the AI-driven development era ensuring all code—whether human-written or AI-generated—is code you can trust.Today AI coding tools are generating explosive volumes of code. This has created an "engineering productivity paradox" : faster code writing doesn't automatically lead to faster safer software delivery. The new bottleneck is verification.Sonar solves this. Integrating code quality and code security into a single platform (SonarQube) Sonar is the foundation for high performance software engineering analyzing over 750 billion lines of code daily to ensure applications are secure reliable and maintainable. As an independent verification platform Sonar enables organizations to securely develop at the speed of AI. We are driven by a deep belief in our people a commitment to excellence and an unwavering dedication to delivery. We operate as a united group where our collective success is the sum of each individual's contributions. Our company culture is driven by the values of CODE: Committed Obsessed Deliberate & Effective. This mindset reflects our culture of creativity collaboration and pride in the work we do. Rooted in the open source community Sonar’s solutions support over 35 programming languages frameworks and infrastructure technologies. Today Sonar is used by 7M+ developers worldwide including Snowflake Booking.com Deutsche Bank AstraZeneca and Ford Motor Company.Sonar is headquartered in Geneva Switzerland with additional offices in Austin Texas; Bochum Germany; London Singapore and Tokyo. The company is rapidly growing with over 800 employees!Join us in our mission to solve the trillion-dollar challenge of bad code!

Why Work With Us

We are a product-first company with a people-first culture. Every employee has the opportunity to grow and learn. We promote from within provide regular feedback and professional development opportunities value the right to fail along with respect and kindness and work with team members to achieve their full potential.