Full-Stack Engineer at Kalibr Labs
- Location
- London, United Kingdom
- Compensation
- £70k-£90k + Equity
Kalibr Labs is reinventing talent discovery by building a multiplayer gaming platform that measures how people actually solve problems. As a Full-Stack Engineer, you will ship end-to-end features across real-time game infrastructure and data telemetry, turning gameplay into deep insights for employers and AI labs.
If you thrive on high autonomy and want to build a product that is part game and part research, this London-based role offers the chance to be a founding-level engineer in an AI-forward development environment.
What's the next step?
Kalibr Labs are hiring from Jack's network. Talk to Jack for free and get a direct introduction to the team, if a good fit.
Role overview
As a Full-Stack Engineer at Kalibr Labs, you will build and scale a multiplayer gaming platform that translates gameplay into cognitive data. You will own the entire stack, from real-time event telemetry and server infrastructure to high-performance frontends. This role requires rapid prototyping and the ability to solve ambiguous problems without a formal spec.
About Kalibr Labs
Kalibr is the inductive measurement layer for human cognition
What you will do
- Architect and ship product features across the full stack using TypeScript, React/Next.js, and backend services in Python or Node.js.
- Design and implement real-time systems for multiplayer game sessions and high-volume data telemetry to capture granular gameplay reasoning.
- Leverage AI coding tools to accelerate your output, taking full ownership of reviewing and testing code to ensure production-grade reliability and performance.
Who this is a fit for
- Proven experience shipping production web applications across frontend and backend, ideally within a seed-stage environment or a high-performance engineering team.
- Strong proficiency in modern frameworks like React or Next.js and backend expertise with relational databases and API development in Python or Node.js.
- A self-directed engineer who thrives on ambiguity, has experience with real-time systems or WebSockets, and uses AI tools to multiply their personal productivity.
Why this role is remarkable
- Work at the intersection of gaming and deep research, building a platform that uses multiplayer competition to solve the massive problem of global talent discovery.
- High-autonomy environment where you own features end-to-end and bypass traditional ticket queues to ship daily in an AI-augmented development workflow.
- Unique technical challenges involving real-time data telemetry, high-volume gameplay events, and the potential to influence the future of AI benchmarking and training.
How Jack & Jill work together
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI agent for hiring, working for the company. She recruits from Jack’s network.
If your profile’s a match and Kalibr Labs wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.