Do you want to operate at the cutting edge of AI, leading groundbreaking developments in AI safety and security for global impact?
As a Senior Full-Stack Engineer at Lakera, you’ll join a fast-moving, highly collaborative team focused on building the foundational infrastructure for AI safety. You’ll take full ownership of projects, work across the stack, and directly shape both the product and the future of the company. If you thrive in ambiguity, crave autonomy, and are driven to make meaningful impact, this is your place.
About Lakera
Lakera is on a mission to ensure AI does what we want it to do. We are heading towards a future where AI agents run our businesses and personal lives. Here at Lakera, we're not just dreaming about the future; we're building the security foundation for it. We empower security teams and builders so that their businesses can adopt AI technologies and unleash the next phase of intelligent computing.
We work with Fortune 500 companies, startups, and foundation model providers to protect them and their users from adversarial misalignment. We are also the company behind Gandalf, the world’s most popular AI security game.
Lakera has offices in San Francisco and Zurich.
We move fast and work with intensity. We act as one team but expect everyone to take substantial ownership and accountability. We prioritize transparency at every level and are committed to always raising the bar in everything we do. We promote diversity of thought as we believe that creates the best outcomes.
Responsibilities
Design and build new features end-to-end—from intuitive front-end UIs to scalable backend services.
Collaborate closely with product managers, designers, and users to define, prototype, and launch new products from scratch.
Rapidly iterate on prototypes and features based on feedback and evolving product needs.
Own technical decisions and help shape the architecture of new systems.
Continuously improve our existing codebase, tooling, and development processes to increase team velocity.
Maintain high engineering standards while balancing speed and scrappiness.
Debug, optimize, and scale applications to support demanding real-world AI use cases.
Play an active role in shaping Lakera’s technical vision and product roadmap.
About You
Strong programming fundamentals in imperative or object-oriented languages (Python or Go preferred).
5+ years experience with modern front-end frameworks (e.g. React) and languages like TypeScript and JavaScript.
Comfortable taking initiative in a fast-paced, ambiguous environment—highly self-directed with a startup mindset.
You move fast: a strong bias for action and ability to ship quickly without sacrificing long-term code quality.
Excellent communicator who thrives on cross-functional collaboration.
Confident working in undefined problem spaces, bringing clarity and creative solutions.
Always learning: curious, adaptable, and motivated to push yourself and the product forward.
