Fullstack Engineer (SF, hybrid/on-site) | Trust & Payments Infra | Series A / Tier 1 VC Backing

A Series A San Fran startup backed by Tier-1 investors is building the identity and transaction layer for the agentic internet, the infrastructure that lets AI agents authenticate, pay, and operate autonomously at scale.

They're hiring a Fullstack Engineer (hybrid/on-site) to own the developer-facing side of the product: real-time dashboards, terminal interfaces, and the API layer that gives engineers and operators live visibility into how agents interact with the world.

What you'll be building:

A high-performance web dashboard for managing AI agent identities and payments
A CLI/TUI for developers to interact with agent infrastructure directly from the terminal
APIs and frontend components handling real-time data streams from blockchain and backend services
Custom integration layers for early design partners

What they're looking for:

3+ years in fullstack development at an infrastructure or developer-tooling startup
Strong React and TypeScript: primary emphasis on frontend/UX
CLI or TUI experience (Bubble Tea, Charm, or similar)
Backend proficiency, ideally in Go, Rust, or Node.js
Product mindset
Startup experience, preferably recent or current at an AI firm
MIT/Berkeley education a big plus

$160K–$210K DOE base + equity + tokens

If this sounds like your kind of build and you have the relevant experience, please apply below!

*H1B sponsorship not available

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