About the Role
This is a founding-level product engineering role at an early-stage B2B SaaS startup building an AI-driven pricing and monetization platform. You will own product modules end-to-end, work directly with customers and leadership, and help define the architecture and engineering culture of a small, high-output team. Financial fidelity and agentic AI systems are core to what gets built here.
What You'll Do
- Scope, design, build, and iterate on entire product modules in close collaboration with customers.
- Design and evolve architecture for agentic AI systems spanning conversational interfaces, web, terminal UIs, and vendor integrations.
- Ensure features are drivable by LLM agents through MCP-style server endpoints and conversational interfaces.
- Move pricing and business logic off the client into backend services to preserve financial correctness.
- Extend and maintain a typed pricing ontology using Pydantic models covering SKUs, propositions, personas, pricing structures, and more.
- Lead architectural reviews and set standards for testing, observability, deployment, and performance monitoring.
- Mentor peers, shape product strategy, and help establish engineering culture and best practices.
- Treat money-handling code as load-bearing and prioritize root-cause analysis for production issues.
- Operate within an AI-native SDLC where agents assist with code generation and automated review gates.
What We're Looking For
- 8+ years of software engineering experience with demonstrated ownership of full product areas at startup or staff-level scope.
- Deep backend expertise with production experience in FastAPI, Python, and MongoDB or a comparable stack.
- Credible full-stack range: ability to design versioned APIs and ship clean React and TypeScript UIs independently.
- Track record of taking ambiguous customer problems to shipped features without a dedicated PM.
- Experience with B2B SaaS monetization concepts: pricing models, packaging, quoting, or CPQ.
- Experience building or integrating LLM-driven features, agent workflows, or MCP-like tooling servers.
- High standards for correctness, especially around financial logic.
- Prior experience as an early employee or technical founder who shipped a 0-to-1 B2B product is a strong plus.
- Familiarity with SOC 2, GDPR, or data residency constraints is a plus.
- Must be authorized to work in the United States; visa sponsorship is not available.
Compensation & Benefits
Base salary: $200,000 to $250,000 USD annually. No visa sponsorship is available.
Location
On-site in San Francisco, CA. Candidates must be based there or willing to relocate.