Founding Full-Stack Engineer for Legal AI

OpenAI; California (MO); On-site; USD 160,000 - 210,000; Full time

Job summary

OpenAI is seeking a Founding Full-Stack Software Engineer for the Legal team to imagine, build, and scale AI-powered products for legal workflows. You will own end-to-end features across the stack, collaborating with product, design, research, and go-to-market partners to turn complex ideas into reliable software.

You’ll prototype rapidly, ship production-ready applications on OpenAI’s platforms, and contribute to engineering culture and technical standards as an early team member.

Qualifications

• 6+ years of professional software engineering experience.
• Built and shipped full-stack applications end-to-end.
• Strong frontend and backend engineering skills across the stack.
• Comfort with ambiguity and rapid iteration.
• Ability to collaborate with product, design, research, and customers.

Responsibilities

• Build and ship full-stack products that leverage OpenAI models to solve complex problems in legal workflows.
• Own projects end-to-end, from early prototypes and technical exploration through production deployment and iteration.
• Design and develop intuitive user experiences across frontend and backend systems.
• Build scalable, reliable systems on top of OpenAI’s internal platforms and APIs while contributing new technical foundations where needed.
• Partner closely with product managers, designers, researchers, applied AI teams, and customers to identify opportunities and translate insights into impactful products.
• Rapidly prototype and experiment with new AI capabilities, using real-world feedback to guide product decisions.
• Develop a deep understanding of legal workflows, customer needs, and industry challenges to inform technical strategy.
• Help establish engineering culture, technical standards, and product practices as an early member of the team.
• Learn from and contribute alongside deeply experienced engineers while fostering a high-trust, inclusive, and candid team environment.

Skills

Full-stack

Frontend

Backend

AI integration

Product collaboration

Ownership

Prototype development

Ambiguity tolerance

Tools

OpenAI APIs

Cloud platforms

React

Node.js

Job description

OpenAI is seeking a Founding Full-Stack Software Engineer for the Legal team to imagine, build, and scale AI-powered products for legal workflows. You will own end-to-end features across the stack, collaborating with product, design, research, and go-to-market partners to turn complex ideas into reliable software.

You’ll prototype rapidly, ship production-ready applications on OpenAI’s platforms, and contribute to engineering culture and technical standards as an early team member.