Founding Product Engineer

About the Role

Join a small team building AI-driven pricing and monetization software for businesses. You will own product areas end to end, combining customer discovery, technical leadership, and hands-on engineering to deliver dependable features where financial accuracy is essential.

What You'll Do

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

• Design and evolve architecture for AI-enabled workflows across web interfaces, conversational tools, and integrations.

• Make product capabilities accessible to LLM agents through agent interfaces and server tooling.

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

• Extend typed data models for pricing concepts and related product entities.

• Set and maintain practices for testing, observability, deployment, security, and performance.

• Lead technical reviews, mentor colleagues, and investigate production incidents involving financial logic.

• Improve development workflows that use AI coding tools with appropriate review and quality controls.

What We're Looking For

• At least 8 years of software engineering experience, including startup experience owning and delivering full product areas.

• Strong backend experience with Python, FastAPI, and MongoDB or comparable technologies, plus production API and data-model design experience.

• Practical React and TypeScript skills, including the ability to independently deliver polished interfaces.

• Experience taking ambiguous customer needs through scoping and delivery, with limited product-management support.

• Background in B2B SaaS pricing, packaging, quoting, billing, or monetization systems.

• Experience with financial correctness, safe numerical and timezone handling, and resolving customer-impacting production issues.

• Familiarity with AI-enabled product features, LLM agent workflows, or agent tooling; experience with MCP-like servers is a plus.

Compensation & Benefits

Base salary: $200,000 to $250,000 annually. Visa sponsorship is not available; US work authorization is required.

Location

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