Software Engineer

About this role

ProNexus is recruiting for a fast-growing, pre-Series A AI startup building high-stakes AI infrastructure for trial attorneys. The company is developing agentic software that helps litigation teams research, draft, cite-check, analyze case documents, and produce reliable legal work where accuracy is critical.

This is a Founding Engineer role on a very small engineering team. You’ll work across frontend, backend, AI systems, integrations, and agent architecture. The right person is a true full-stack builder who can move quickly, use AI tools effectively, and still deeply understand and audit everything they ship.

You’ll own polished product surfaces while also going deep on LLM workflows, RAG pipelines, orchestrators, sub-agents, tool-use patterns, and evaluation loops that make AI output reliable enough for legal work.

What You’ll Do Build and ship features across the full stack, including React, Next.js, TypeScript, Python, SQL, and AI infrastructure. Own frontend craft for the company’s primary AI interface, with a focus on speed, usability, and polished product execution. Develop and maintain AI-powered features such as document extraction, RAG pipelines, agent orchestration, sub-agent workflows, eval loops, and anti-hallucination scaffolding. Take ownership of third-party integrations such as legal software, CRMs, document systems, and other customer-facing tools. Build and improve backend systems for reliability, performance, and scale. Work closely with the founders and a small engineering team to scope, build, ship, and iterate quickly. Use tools like Claude Code, GPT, and other AI development workflows to move faster while carefully reviewing and understanding generated output.

### Requirements

3+ years of experience shipping production software across frontend and backend. Strong full-stack ability with React, Next.js, TypeScript, Python, SQL, and modern web development. Experience building or shipping LLM-powered products in production. Hands-on e...