Senior Backend Engineer

Senior Backend Engineer  (On-site, Berlin)

Our client is an early-stage, high-traction startup building open-source developer tooling focused on LLM applications. Backed by strong technical leadership and rapid user adoption, they're scaling their team in Berlin and looking for a Backend Engineer to help architect and maintain a high-performance platform.

What You'll Be Doing:

As a Backend Engineer, you'll work on the ingestion and processing layer that handles millions of daily events.  You'll collaborate closely with founding engineers and contribute to architectural decisions, performance improvements, and building out scalable backend infrastructure.

Tech Stack includes: TypeScript (Express, Next.js, tRPC), Prisma, Clickhouse, Postgres, Redis, S3. SDKs are built in Python and TypeScript. Prior experience with these tools is ideal but not mandatory if you're a fast learner.

Why This Role?

• Join early and shape the future of a breakout open-source platform.
• Work in a team that values ownership, independence, and technical excellence.

• Contribute to a thriving commercial open-source project.

• Build infrastructure from the ground up and help scale it.

You Might Be a Great Fit If You:

• Have 3-5+ years of experience in backend or full-stack development.
• Are excited to work on high-scale systems and observability tooling.
• Care about performance, clean code, and building for developers.
• Are proactive, self-directed, and thrive in high-trust, low-ego environments.
• Enjoy shipping fast, learning from users, and improving developer experiences.

Bonus Points For:

• Experience with early-stage startups or founding a company.

• SDK development experience.

• Background in ML/AI or developer-facing platforms.

Location: On-site in Berlin, Germany.
Compensation: Competitive salary + equity.