Senior Full Stack Engineer, Data Platform - Experimentation

Senior Full Stack Engineer, Data Platform - Experimentation

Bolt

Berlin, Germany

About the role

As a Senior Full Stack Engineer, Data Platform - Experimentation, you will be responsible for taking full ownership of the UI/UX of the AB Platform. This work directly impacts internal teams by enabling them to run faster, more reliable experiments and contribute to company-wide innovations. The role requires solid backend knowledge, but the focus is heavily on the frontend, working on core Experimentation tools for setting up and analysing A/B tests. You will primarily be coding in TypeScript and working with Node.js and other tools.

Main tasks and responsibilities:

• Take full ownership of the UI/UX of the AB Platform, including redesign of the existing tools and adding AI capabilities.
• Contribute directly to improving key features, focusing on performance and user experience.
• Collaborate with the team to build and optimise the Experimentation Platform used by hundreds of internal users.
• Work closely with product teams and users to ensure the platform is intuitive and easy to use for non-technical users, including conducting user interviews.
• Help maintain and evolve high-traffic (200k RPS) back-end services.

About you

• A full-stack engineer with 5+ years of tech experience, including 2+ years in frontend/full-stack roles.
• Strong Front-end skills: JavaScript/TypeScript, CSS, and HTML. Experience with React.js is a plus.
• Solid Back-end understanding: experience building APIs and using relational databases (SQL).
• Excellent communication and above-average soft skills for collaborating with cross-functional teams and talking to users.
• A strong UX mindset to ensure simple, self-explanatory design and intuitive interfaces.
• Proactive problem-solving with a product mindset, focused on value and driving impact.