San Francisco, CA · On-site · Full-time Compensation: $150,000–$200,000 + 0–2% equity
The Role
We're hiring a Founding AI & Cloud Engineer to build our products end-to-end. You'll work across the stack — from the interfaces merchants and developers use to the services and data behind them — with particular focus on two core products: programmable, scope-limited agent payment credentials, and agentic checkout that lets agents complete real transactions across commerce protocols and payment providers. You'll work alongside the founding team on the AI and agent features at the center of the product. This is a hands-on, high-agency role: you take features from idea to production, make the design decisions along the way, and operate what you ship. Because the products move money and assert identity on behalf of real people, correctness and reliability matter throughout the stack.
What you'll be doing
- Design and build features end-to-end, across front end and back end, choosing the right place in the stack to solve a given problem.
- Build and improve the experiences and services behind our two core products (programmable payment credentials and agentic checkout).
- Design and maintain the APIs and integrations that merchants, developers, and partners build on, with attention to clarity, stability, and good documentation.
- Work on the parts of the product that rely on LLMs and agents, including the tooling and guardrails that keep them dependable.
- Share responsibility for testing, monitoring, and operational health, holding a high bar for correctness as the product grows.
Tech stack: JavaScript-based, with Python for MCP, all on AWS
Requirements
- 0-3 years engineering
- Agent harness / agent building experience
- High agency, opinionated, generative thinker
- SF North Beach, 5 days in-person + occasional weekends
- Scrappy AI-native generalist (NOT 10-year infra)
- Substantial full-stack experience, front end and back end
- TypeScript, JavaScript, or Python fluency
- API design experience, clarity and stability
- AWS familiarity, willingness to operate what you build
- AI/Cloud experience
Green Flags
- Strong agent harness or agent building portfolio. Direct match for the product.
- Hackathon-heavy background paired with shipping discipline. Demonstrates developer experience and agent integration intuition.
- Scrappy, AI-native generalist with side projects and high agency.
- Fintech adjacency (Stripe, Plaid, Visa, crypto startups, payments tools)
- Comfortable being raw and malleable. Wants to take on more responsibility than they've had at this point in their career.
Red Flags
- 10-year infra engineer wanting Staff or Principal title.