About Nuvena. Nuvena builds Navio, the Execution Operating System: every promise a company makes or is owed — in a contract or to a team — gets an owner, a follow-up and proof.
Role Summary
You teach Navio to read contracts. You design, test and improve the AI in Navio OS that pulls obligations, owners, dates and penalties out of real agreements, drafts clauses and answers questions across documents. You treat accuracy as something you measure, not something you hope for: you build the test sets, track the numbers and fix what breaks. You own the AI from the first prompt to the feature customers rely on.
Key Responsibilities
- Build and improve the extraction pipelines that turn contracts into structured obligations, owners, dates, proof requirements and penalties.
- Write, version and refine prompts for extraction, classification, review and drafting, and know why each one works.
- Build evaluation sets with the legal team, measure accuracy on every change, and catch regressions before they ship.
- Design retrieval across large document sets: chunking, embeddings, search and citations, so every answer points back to the clause it came from.
- Work with the backend engineers to turn AI workflows into reliable Python services with clear APIs, logging and monitoring.
- Keep outputs safe, consistent and easy for a user to check, while keeping cost and response time under control.
Must Have
- 2–4 years of software engineering, including hands-on work building on large language models.
- Strong Python, and real experience with LLM APIs, prompt design and structured outputs.
- Has built an evaluation for an AI feature and improved results because of it.
- Understands retrieval: embeddings, vector search and how chunking changes the answers.
- Reads carefully and writes clearly; spots the clause the model missed.
- Takes ownership and finishes what you start.
Good To Have
- An interest in law, contracts or business documents.
- OCR and parsing for scanned PDFs, tables and messy documents.
- Fine-tuning, or running open-source models in production.
- Shipped AI features to enterprise customers.
What We Expect From Everyone
- Go-getter
- Problem-solver
- Open-minded
- Takes decisions
- Owns the outcome
- Works as one team