V

Founding Full-Stack Engineer (AI / LLM Product)

vermillion analytics • United State
Visa Sponsorship
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Founding Full-Stack Engineer role at an early-stage AI company in San Francisco, building and shipping production services end-to-end with LLM-powered systems. Responsibilities include designing full-stack applications, integrating LLMs into production, and iterating on features based on direct customer feedback. Requires 5-10 years of full-stack experience with Go, Python, PostgreSQL, and React/TypeScript, plus proven production LLM integration experience.

Key Highlights
Founding engineer role with full ownership across the entire stack at an early-stage AI company
Build and ship production LLM-powered systems including orchestration, tool calling, context management, and evals
Direct customer interaction with hands-on iteration based on user feedback
On-site in San Francisco 5 days a week — no remote or hybrid option
Key Responsibilities
Design, build, and run production services end to end, from PostgreSQL schema to React/TypeScript front end
Build systems that integrate with LLMs in production including orchestration, tool calling, context management, and evals
Talk to customers directly and iterate on features based on their feedback
Lead large, business-critical projects and make pragmatic calls on when to refactor or ship, build or buy, and how to manage technical debt
Technical Skills Required
Go Python PostgreSQL
Benefits & Perks
Salary range: $180,000 - $280,000
Visa sponsorship available (H-1B transfers, STEM OPT, TN visas)
Nice to Have
Early-stage startup experience, or a mix of big tech and startup
Infrastructure as Code: Terraform, GCP, Docker

Job Description

Founding Full-Stack Engineer (AI / LLM Product)

San Francisco, on-site 5 days a week | $180k - $280k

We are recruiting on behalf of an early-stage, AI-focused company in San Francisco that is looking for a founding engineer. This is a hands-on role for someone who wants real ownership: you will build across the whole stack, put LLM-powered systems into production, and work directly with the customers using what you ship.

Our client is very clear about the background they need. Please read the requirements below carefully before applying, as the essentials are not flexible.

The role

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