Nelly Solutions

Senior AI Engineer

Nelly Solutions

full-time

Posted on:

Location Type: Hybrid

Location: Berlin • Germany

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Job Level

Senior

Tech Stack

PythonTypeScript

About the role

  • Embrace a fast-paced, agile environment where outcome and quick progress is achieved through experimentation and rapid iteration
  • Design and ship backend-first agentic services combining LLM services - taking full responsibility for system design, APIs, and data integrity
  • Build retrieval & knowledge layers (embeddings, vector stores, metadata schemas, glossary, memories) that make suggestions accurate across different input scenarios
  • Own production quality: tracing, retries, fallbacks, prompt/version control, AB tests, feature flags, rollbacks
  • Support user interviews, contribute to product planning, and collaborate with cross-functional teams to drive impactful projects

Requirements

  • 6+ years building and operating backend systems in production (strong Python skills required, TypeScript a plus for integration work towards customer-facing app)
  • 1-2 years shipping LLM/GenAI features to users (RAG, tool use, planning, or agent frameworks e.g MCP)
  • Builder and owner mindset, with high agency and proactive drive to move fast - obsessed with shipping the best user experience and winning on product
  • Proven experience in systems design: API design, data modeling, high load async worker queues, eventing, caching
  • Great communication skills in English
  • Bonus skills: Applied ML fundamentals alongside theoretical experience
  • Fluent German is a big plus, to improve the interaction between you and our user base.
Benefits
  • BVG ticket or a Swapfiets membership to cruise through the city
  • Urban Sports membership to sweat, stretch, or sauna your way through the week
  • Top of the line working equipment
  • Flexible hours and a hybrid setup in the heart of Berlin
  • Enjoy up to 4 weeks of workation wherever inspiration hits
  • A cozy, dog-friendly office where good vibes are basically mandatory
  • A fridge full of cold drinks and snacks waiting to be claimed
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
PythonTypeScriptLLM featuresRAGAPI designdata modelingasync worker queueseventingcachingApplied ML
Soft Skills
communication skillsbuilder mindsetproactive driveuser experience focuscollaborationhigh agency