Founding Product Engineer

About the Role

Join a small B2B SaaS team building AI-powered pricing and monetization software. In this hands-on role, you will own product modules from customer discovery through launch, shaping reliable systems for complex pricing workflows.

What You'll Do

• Scope product problems with customers, then design versioned APIs, build user interfaces, launch complete modules, and iterate on feedback.

• Design and evolve architecture for AI-enabled experiences across web, conversational interfaces, command-line tools, and vendor integrations.

• Make product features accessible to LLM agents through agent tooling and conversational workflows.

• Move pricing and business logic into backend services to protect financial accuracy.

• Extend typed pricing data models and establish testing, observability, deployment, and performance practices.

• Lead architectural discussions, investigate production issues, mentor teammates, and improve engineering practices.

What We're Looking For

• At least 8 years of software engineering experience, including startup experience owning and delivering full product areas at staff-level scope.

• Strong backend experience with Python, FastAPI, and MongoDB or comparable technologies, plus experience designing server-side business logic and versioned APIs.

• Hands-on React and TypeScript skills, including the ability to independently deliver a polished user interface.

• A track record of turning ambiguous customer needs into shipped products, including customer discovery, data modeling, and end-to-end delivery.

• Experience with AI-enabled products or agent workflows; familiarity with MCP-style tooling is beneficial.

• Interest or experience in B2B SaaS monetization, including pricing, packaging, quoting, billing, or CPQ.

• Strong attention to correctness, particularly in financial logic, and US work authorization without visa sponsorship.

Compensation & Benefits

Base salary: $200,000 to $250,000 annually. Visa sponsorship is not available.

Location

On-site in San Francisco, California. Candidates must be based in or willing to relocate to San Francisco.