Founding Engineer

CLERA; Berlin; On-site; EUR 90,000 - 140,000; Full time

Benefits offered by this job

Equity

Job summary

Clera Labs, Inc. in Berlin is seeking a hands-on senior full-stack engineer to turn customer problems into shipped features, from discovery to production.

You will build AI-enabled workflows, design scalable architectures, and collaborate with a small in-person team. The role requires strong frontend/backend skills, React, TypeScript, Python, Next.js, and experience with LLMs and data systems.

Qualifications

• 3+ years of full-stack engineering delivering end-to-end features.
• Production experience with TypeScript and Python; Next.js deployments.
• Experience with LLM workflows, retrieval systems, and embeddings.
• Strong frontend, backend, DB, API design and full-stack architecture.

Responsibilities

• Build and ship full-stack features from discovery to production.
• Develop AI-enabled workflows and shared foundations for context and tools.
• Design reliable LLM workflows with evaluation loops and observability.
• Make architectural decisions across performance, security, and DX.
• Review AI-assisted code and release iterations with user feedback.
• Contribute to hiring and establish engineering practices as team grows.
• Build real-time data pipelines and integrations with enterprise systems.

Skills

Full-stack engineering

TypeScript

Python

Next.js

LLMs

REST/GraphQL

React

Team ownership

Tools

PostgreSQL

Supabase

Vercel

REST API

GraphQL

Job description

About the Role

Join an early-stage team building AI software for enterprise procurement. You will own customer problems from discovery through production while helping shape the product, technical direction, and engineering practices.

What You'll Do

• Build and ship full-stack features based on customer needs, from discovery through production.

• Develop AI-enabled workflows and shared foundations for agent context, tool use, and evaluation.

• Design reliable LLM workflows with evaluation loops, guardrails, and observability.

• Make architectural decisions across performance, security, and developer experience.

• Review AI-assisted code and improve product quality through frequent releases and user feedback.

• Help establish engineering practices and contribute to hiring as the team grows.

• Build real-time data pipelines and integrations with enterprise systems.

What We're Looking For

• At least 3 years of full-stack engineering experience, delivering end-to-end product features across frontend, backend, and infrastructure.

• Production experience with TypeScript and Python, plus hands-on experience building and deploying applications with Next.js.

• Production experience with LLMs, retrieval systems, and embeddings, including an understanding of latency, cost, and quality trade-offs.

• Strong frontend, backend, database, API design, and full-stack architecture skills; experience with React, PostgreSQL or Supabase, Vercel, and REST or GraphQL is relevant.

• Evidence of strong engineering ability, initiative, and ownership, with experience shipping production software at a startup or similarly entrepreneurial team.

• Experience with procurement, ERP, enterprise supply chain, or data-intensive B2B products is helpful.

• Comfort working hands-on as an individual contributor, communicating clearly, and collaborating with a small team in person.

Compensation & Benefits

Competitive salary and meaningful equity. Visa sponsorship is not available.

Location

On-site in Berlin, Germany, working primarily in person with the team.