Product Engineer; Full-stack

About Warden AI

AI is being deployed across every industry, transforming how decisions are made and how people interact with technology. But as adoption accelerates, so do concerns about bias, accuracy, and accountability. Warden AI safeguards this transformation by making sure AI systems arefair, transparent, accurate, and explainable.

Founded in 2023 and backed by investors from Playfair, Monzo, Onfido, and Codat, our platform continuously audits AI models, delivering independent oversight through dashboards, reports, and certifications. With teams in London and Austin, we partner with both fast-growing platforms and global enterprises to enable the responsible adoption of AI worldwide.

We are hiring a Full-stack Product Engineer to help build and evolve the core product experiences of Warden’s AI assurance platform. The role spans frontend product development and backend services, turning complex analytical and audit workflows into clear, reliable software that customers can trust.

You will join an existing engineering team and report to the CTO, working closely with product, data, and customer‑facing teams. A strong candidate will bring a solid background in Type Script and React, helping strengthen the team’s full‑stack product development capabilities, particularly across Type Script, React, and Next.js, while contributing to backend systems in Python. Your work will have visible impact on product quality, usability, and reliability across the platform.

As one of our early product engineering hires, you will help shape how this role grows over time and take on more responsibility across product development as we scale.

Here are a few examples of things you might be working on:

• Build end‑to‑end product features, e.g. design and implement new dashboards, workflows, and UI components that help customers understand and act on AI audit results.
• Lead on frontend experiences, e.g. develop polished, accessible interfaces, working closely with product and design to get details right.
• Contribute to backend services, e.g. extend services that power audits, reports, and internal tooling, and wire them cleanly into the frontend.
• Translate product requirements into working software, e.g. break down loosely defined problems, propose pragmatic solutions, and iterate quickly based on feedback.
• Improve product quality and reliability, e.g. fix bugs, reduce edge cases, improve performance, and strengthen type safety and test coverage.
• Collaborate cross‑functionally, e.g. work closely with data scientists, solutions engineers, and founders to ship features that solve real customer problems.
• Continuously improve the codebase, e.g. refactor areas you touch, improve developer ergonomics, and contribute to shared patterns and conventions.

• A self‑starting, get‑it‑done attitude. You’re comfortable with ambiguity, take ownership, and move from idea to working software without needing constant direction.
• Strong Type Script and React experience. You’ve shipped real, user‑facing features and care about code quality, usability, and maintainability. Experience with Next.js is a plus.
• Full‑stack mindset. You’re happy working across the stack and don’t see frontend and backend as rigid silos.
• Experience shipping production software. You’ve worked on systems that real users depend on and understand the importance of reliability, performance, and maintainable code.
• Pragmatic trade‑off decision making. You know when “good enough” is the right choice to move fast, and when to slow down to build something more robust.
• Product‑oriented thinking. You care about usability, clarity, and customer impact, not just “getting something to work.”
• Startup mindset. You thrive in fast‑paced, early‑stage environments, are excited to wear multiple hats, navigate ambiguity, and bring structure where needed.
• Curious about AI, compliance, or HR Tech. Experience in any of these is a plus, but not required.

• You’re looking for a frontend or UI engineering role. This is a product engineering role that involves reasoning about systems, data, and trade‑offs across the stack.
• You have limited…