Senior AI Product Engineer (m/f/d)

The role

You will own LLM pipelines that process real logistics documents and data in production. You will work with Product and Engineering to turn unstructured problems into production-ready AI solutions.

What you will do

• Design and own LLM pipelines for logistics documents and data
• Implement prompt design, structured output validation, eval harnesses, retries, fallbacks, monitoring, alerting and cost tracking
• Decide when to use an LLM versus regex, lookup tables, or deterministic code
• Build evaluation infrastructure including test datasets, regression checks, and quality metrics
• Pick models across providers based on cost, latency and quality tradeoffs
• Apply prompting techniques to solve extraction problems
• Collaborate with Product to scope ambiguous problems
• Raise the bar on code quality, testing and documentation

Required qualifications

• Several years as a software engineer shipping production systems
• At least 3 years focused on LLM-powered features in production
• Strong backend fundamentals: PostgreSQL, async workflows (Temporal), queues, observability, CI/CD
• Comfort working in Python and TypeScript/Node.js
• Deep practical understanding of LLM behaviour: prompting, structured outputs, context window management, common failure modes, handling non-determinism and writing evals
• Pragmatic judgment about architecture and tradeoffs

Benefits

• Competitive salary and equity options
• Dynamic, fast-paced work environment
• Flexible working arrangements (Hybrid)
• 30 days of PTO
• Regular team events and offsites
• Monthly mobility budget via Navit

About the company

Voyfai is a fast-growing Series A startup shaping the future of logistics and technology across Europe. It is headquartered in Berlin and operates at the center of a broader group of companies active across several European markets.