• Your challengeLead, support and coordinate the team that builds Treeline while still being around 60% hands-on
• Architect, build and extend features end-to-end that handle large volumes of geospatial data, with attention to UX and design
• Design and build well-designed, performant API endpoints and backend services used by partners and customers
• Coordinate tightly with other functions in cross-functional temporary squads
• Shape and influence how your team works and how we work together in a greater context

Stack:

• Frontend: React, TypeScript
• Backend: NestJS, TypeORM
• Mobile: React Native
• Database: PostgreSQL (including geospatial workloads, PostGIS and OGC)
• Infrastructure & CI/CD: AWS, GitLab

Your profile

Must have

• First experience as a techlead, knowing that the team and product takes priority over your own hands-on work, always
• Strong Backend experience with NestJS, Express, or Node.js
• High level of TypeScript, React in production (Vue or Preact also fine — we care that you know a component model well, not which one)
• Familiarity with mobile development, especially React Native
• You've worked in a codebase with CI/CD and code review, and can find your way around a system you didn't build
• You've used AI-assisted coding in your actual day-to-day, not just tried it once

Nice to have

• Spec-driven or test-driven development, agentic or otherwise
• Web-based geospatial / GIS work
• An eye for design and UX — enough to make small design calls without needing a mockup for everything
• Your BenefitsThe opportunity to create a product that can improve business processes and lives across the globe.
• Flexible working hours and hybrid work model - we trust our employees to get their work done while maintaining a healthy work-life balance.
• We empower employees to drive their own career development, take initiative and have the freedom to be creative and bold.
• Not an overtime culture - we take care that overtime is done only as a necessity and always offset with time off and rest.
• A collaborative and learning environment - frequent internal workshops, knowledge sharing sessions, journal clubs and hackathons.
• Office located in the centre of Berlin Kreuzberg with free fruit, nuts and drinks.
• Potential to participate in the employee stock option program.
• Urban Sports membership and BVG subsidy, corporate pension program.
• A diverse and vibrant international environment of 30+ different nationalities.
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