Founding Product Engineer

13 hours ago

Base Salary

$200k - $250k/yr

Responsibilities

Own product modules end-to-end, from customer conversations and problem scoping through design, implementation, iteration, and shipment.
Design and evolve architecture for agentic AI systems across web, conversational, and vendor-integration surfaces.
Build LLM-agent-compatible features using MCP-style servers and conversational interfaces.
Move pricing and business logic into backend services to preserve financial accuracy.
Extend and maintain typed pricing ontologies with Pydantic models for entities such as SKU, Proposition, Persona, and Pricing.
Lead architectural reviews and technical discussions focused on robust, extensible, and secure systems.
Establish testing, observability, deployment, and performance-monitoring practices for AI-driven features.
Mentor peers, influence product strategy, and help define engineering culture and best practices.
Perform thorough root-cause analysis for production issues, particularly in money-handling code.
Improve an AI-native development workflow involving coding agents and automated review gates.

At least 8 years of software engineering experience with ownership of product areas at startup or staff-level scope.
Deep backend experience with FastAPI, Python, and MongoDB or a comparable stack, plus working range in React and TypeScript.
Experience taking ambiguous customer problems to shipped features without a dedicated product manager.
Experience building or integrating AI-assisted features and agent-driven workflows, including LLM-driven interfaces or MCP-style endpoints.
Familiarity with B2B SaaS monetization concepts such as pricing, packaging, quoting, billing, or CPQ.
Strong standards for correctness in financial logic and money-handling code.
Experience designing and shipping versioned APIs and typed data models.
Experience building MCP servers or LLM-agent tooling is preferred.
Experience with billing, metering, or CPQ systems is preferred.
Experience with data-dense frontend components or conversational interfaces is preferred.
Prior experience as an early employee or technical founder shipping a 0-to-1 B2B product is preferred.
Must be authorized to work in the United States.

Salary range of $200,000 to $250,000 USD annually, plus expected equity for the founding-level scope.
On-site role in San Francisco, California; candidates must be based there or willing and able to relocate.