Product Engineer - Langfuse

Trades Workforce Solutions; Berlin; Vor Ort; EUR 70.000 - 130.000; Vollzeit

Zusammenfassung

A fast-growing tech startup in Berlin is seeking a Founding Product Engineer to lead the design and development of open-source LLM DevTools. The position allows full-stack ownership of projects, from user conversations through to production. An engaging work environment and a chance to influence the growth of innovative technology await you. Competitive salary of €70k–€130k plus equity is on offer, along with relocation support to Berlin.

Qualifikationen

• Experience in full-stack development, preferably with TypeScript.
• Strong understanding of open-source development principles.
• A passion for building scalable applications.

Aufgaben

• Design and launch new features for the existing data platform.
• Collaborate with the founding team to drive projects end-to-end.
• Maintain and operate features in production for user feedback.

Kenntnisse

Full-stack development

TypeScript

User conversation

Open-source enthusiasm

Tools

Next.js

Tailwind

Prisma

ClickHouse

PostgreSQL

Python SDK

Jobbeschreibung

🚨 Hiring: Product Engineer | Open-Source LLM DevTools | Berlin (Onsite)
📍 Berlin | 💶 €70k–€130k + equity (0.1–0.35%) | 🧠 Early-stage AI | 🛠️ Full-stack ownership

I'm working with a Berlin-based, VC-backed startup that's building the leading open-source platform for LLM application observability and analytics. They're seeking a Founding Product Engineer to help design, build, and launch new full-stack features on top of their existing data platform.

You'll collaborate directly with the founding team to own projects end-to-end—from initial user conversations to operating features in production. This is a unique opportunity to shape the product and technology of a rapidly growing open-source project.

🛠️ Tech Stack: TypeScript (Next.js, Tailwind, Prisma, tRPC), ClickHouse, PostgreSQL, SDKs in Python and TypeScript
🏗️ Stage: Early traction with significant growth
💼 Offer: €70k–€130k base + 0.1–0.35% equity
✈️ Relocation support to Berlin available

If you're a full-stack engineer passionate about open-source and eager to take full ownership of your work, let's connect. I'd be happy to share more details about this exciting opportunity.