Senior Software Engineer - Gandalf (Zürich)
Senior Software Engineer - Gandalf (Zürich)
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Job Description
Senior Software Engineer Gandalf
Lakera is on a mission to secure the era of intelligent software. At the heart of this mission is Gandalf. The worlds most popular AI security game played by millions globally. Gandalf isnt just a viral success. Its become a proving ground for adversarial testing of LLMs and a cornerstone of how the world learns about AI safety.
Were now looking for a Product-Focused Software Engineer to take Gandalf to the next level. This is a rare opportunity to own a beloved product with massive reach and shape its future. Youll work at the intersection of gaming UX and cutting-edge AI building immersive secure and delightful experiences that people actually love.
What youll do
Own the end-to-end product development of Gandalf. From gameplay mechanics frontend and backend scalability.
Partner with researchers and product leads to prototype test and launch new game modes and features.
Shape and implement the user experience: animations transitions performance and polish the details that turn a toy into magic.
Make Gandalf more social more replayable and more extensible. Think real-time competition player profiles in-game progress and more.
Help define the roadmap not just execute it your product sense matters here.
Drive massive product impact: Gandalf isnt just about building great games its a core surface through which we test validate and improve our models. The work you do here directly shapes model performance product quality and ultimately business outcomes.
You might be a fit if you
Have strong frontend skills (React TypeScript) and solid backend engineering chops (e.g. Python Firebase or similar).
Thrive in zero-to-one product environments and want real ownership.
Are passionate about games user experience and AI and love building things people cant stop using.
Think like a product builder: you care about outcomes not just code quality.
Can move fast independently but collaborate deeply across teams.
Bonus points for
Experience working on games interactive web experiences or viral consumer products.
Working knowledge of LLMs or prompt injection (youll learn fast if not).
A track record of building side projects or launching products end-to-end.
Why this role
Massive visibility: Gandalf is already a viral hit. Youll shape what millions interact with next.
Fast-moving product-first team: No bureaucracy. No silos. Just you and a small team building the future.
Deep mission: At its core Gandalf helps the world understand and secure AI. Its fun but it matters.
Foundational seat: This is not a maintenance role. Youre here to invent.
Apply now to build the most loved and most important game in AI.
Lets stay connected! Follow us on LinkedIn Twitter & Instagram to learn more about what is happening at Lakera.
Join us on Momentum the slack community for AI Safety and Security everything.
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Required Experience:
Senior IC
Employment Type
Full-Time
