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Bolt Logo Bolt · IT - Software Development

Senior Full Stack Engineer, Data Platform - Experimentation

Germany, Berlin · Job Posted December 27, 2025
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Job Description

We are looking for an experienced Senior Full Stack Software Engineer to join our teams in Berlin. Join our diverse distributed cross-functional team, and help us make cities for people, not cars, while working on exciting high-traffic data-intensive systems. Your work will directly impact the productivity and success of internal teams, enabling them to run faster, more reliable experiments and contribute to company-wide innovations.

Job Responsibility

  • 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

Requirements

  • 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
  • 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

Nice to have

Experience with React.js is a plus

What we offer

Get a rewarding salary and stock option package that lets you focus on doing your best work

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