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Founding AI Engineer Motion Design Platform

Job in San Francisco, San Francisco County, California, 94199, USA
Listing for: jobr.pro
Full Time position
Listed on 2026-06-17
Job specializations:
  • Software Development
    AI Engineer (Applied/Software), Full Stack Developer, Software Architect, Backend Developer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Position: Founding AI Engineer for Motion Design Platform

About the Role

We're building an AI motion design platform and this is our founding engineering hire. You'll work closely with the founders to shape the technical foundation, own end-to-end development, and help scale a product designed to empower millions of users with fast, high-quality animations.

What You'll Do
  • Partner with the founders to deliver user‑centric product solutions from concept to production.
  • Own end‑to‑end development of full‑stack features with scalable architecture design.
  • Build and optimize agentic LLM systems incorporating tool‑calling, multi‑step reasoning, and MCP protocols.
  • Design comprehensive LLM evaluation frameworks with automated benchmarks, human‑in‑the‑loop validation, and A/B testing.
  • Optimize LLM inference performance, cost efficiency, and latency across multiple model architectures.
  • Develop a high‑performance motion graphics engine.
  • Drive architectural decisions that support scalable growth to millions of users.
What We're Looking For
  • Strong CS fundamentals.
  • Hands‑on experience building or integrating large language models (LLMs), tool‑calling, multi‑step reasoning, and MCP protocols.
  • Experience designing and implementing LLM evaluation frameworks with automated benchmarks, human‑in‑the‑loop validation, and A/B testing.
  • Demonstrated ability to deliver end‑to‑end full‑stack features with scalable architecture.
  • Startup/early‑stage company experience with an ownership mindset.
  • Proficiency with the full tech stack:
    Type Script, React.js, Next.js, PostgreSQL, GCP, AWS
    .
  • Proficiency in optimizing LLM inference performance, cost efficiency, and latency across multiple model architectures.
Location

Berlin, Germany (office‑based)

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