Founding Engineer

Your profile

Requirements

What makes you a great fit

• Languages and Frameworks – You have worked in Python and frameworks like FastAPI , Pydantic, SQLAlchemy. You are familiar with TypeScript and frontend libraries like React and are able to build intuitive interfaces for complex workflows
• AI and LLMs – You have practical experience with prompt engineering and agentic frameworks (e.g. Google Agent Development Kit, LangGraph). You may even have production experience with LLM observability and evaluation
• Infra and DevOps –You know your way around cloud deployment patterns (e.g. to GCP or AWS). You might have written some Infrastructure-as-Code (IaC) and CI/CD workflows
• Most importantly, you are a fast learner who is eager to learn any technology required to solve the problem at hand
• High Agency – You see a critical problem outside your immediate scope, like an infrastructure bottleneck or a customer friction point, and you fix it without being asked, exercising good judgment while doing so
• Pragmatic & Fast – You value "good enough to ship" over "perfectly engineered.” You use AI assistants (e.g. Cursor, Copilot, Gemini) to automate the mundane so you can focus on the highest-value tasks
• Nice-to-Have’s – German Language Proficiency – While English is our primary language, German fluency is a strong plus to help us better support our core industrial customer base

Benefits

The opus package

• Competitive compensation + meaningful equity– real ownership in opus’ long-term success
• Impact from day one– high ownership, fast customer feedback, responsibility for outcomes
• AI-first, builder environment– the best tools, low overhead, strong bias to ship and learn
• In-person by design– Berlin-Mitte office, high focus, ambitious team, low ego
• 28 vacation days & flexibility when you need to recharge

‍ Our interview process

• Discovery Call (45 min)

We get to know each other and talk about culture, agency, judgment, and how you think about products

• Coding Assessment (60 min)

A hands-on session focused on execution and pragmatism – including how you use tools (and AI) to ship

• System Design (60 min)

Deep dive into architecture and technical strategy: trade-offs, scalability, and long-term thinking

• Founder Interview (30 min)

Final conversation to align on mission, communication, expectations, and mutual fit

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Source: Statistisches Bundesamt (Destatis), table; dl-de/by-2-0; StarIn's calculation

Posted Nov 01, 2026

Posted Nov 01, 2026