yolk.coach

AI Engineer

LLMs suck at writing job posts.

 

If you understand why, we want to talk.

 

Our mission: build the best sales departments in the world and make elite coaching available to every team. It’s big. That’s where you come in.

 

We’re a fast-growing deep-tech startup backed by the investors behind Anthropic, TensorNet, and GROQ. In two weeks, we’re launching a self-serve product for mid-market—while continuing to scale wins with enterprise. Two motions. One team. Zero passengers.

 

What you’ll do
 

  • Own our insights engine: turn messy, human sales processes into measurable, coachable behaviors.
  • Build the quantitative eval loop: design offline/online evals, define success metrics, wire them into CI to keep models honest.
  • Instrument everything: trace, log, and attribute with Helicone; close the loop from prompt → outcome → revenue.
  • Automate improvement: use LangGraph/LangChain to orchestrate tools, memory, and feedback for self-correcting flows.
  • Ship weekly: your work will go live often and directly move client revenue.
  • Partner with customers: jump into pilots with Sales/Success to see where the insights fail—and fix them fast.

 

What makes you a fit
 

  • 3–7+ years in applied ML/ML-platforms, data-heavy backend, or agentic LLM systems (we care more about proof of shipping than years).
  • You’ve built evaluation harnesses for LLMs or search/ranking systems and can explain trade-offs without hand-waving.
  • Comfortable with Python/TypeScript, vector stores, embeddings, retrieval, and tool-calling.
  • Strong grasp of observability & experimentation: tracing, A/Bs, guardrails, model/data versioning.
  • Bias to simplify—you avoid Rube Goldberg pipelines and reach for the shortest path that survives production.
  •  

Our stack (today)
 

  • Python, FastAPI, Postgres, Redis
  • LangGraph/LangChain; OpenAI/Anthropic; RAG + function/tool calling
  • Helicone for tracing; dbt/Airflow-style orchestration where it helps
  • Infra: Docker, k8s, CI/CD on GitHub Actions

 

How we work
 

  • Speed with safety: we ship small, instrumented changes; “fast” means measured.
  • Coachability culture: we dogfood Yolk—every function runs on feedback and visible progress.
  • High ownership: no ticket-takers. You’ll own problems end-to-end.

 

Why join
 

  • Outsized surface area: a small team where your code changes how sales teams get coached—this quarter.
  • Real momentum: enterprise logos in motion + imminent PLG launch.
  • Career-defining work: you’ll do the best work of your career with people who expect that from themselves.

 

Location & comp
 

  • Hybrid/Remote-friendly 
  • Competitive salary+

Required languages

English C1 - Advanced
Published 15 October
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29 applications
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