full stack developer for AI agent payments

Saifuro checks payments that AI agents try to make by comparing spending requests with mandates previously approved by humans. It provides signed, verifiable responses, escrow on Base and Solana for trades between agents, and onchain settlement in USDC without holding customer funds. Its users are developers building agents and teams selling APIs to those agents.

• Decide how to build the codebase, including its architecture, testing, deployment, and monitoring, for future engineers
• Talk to teams integrating Saifuro, identify where they get stuck, and ship fixes the same week
• Bring USDC settlement, escrow status, and receipts into the product so every payment can be traced from approval to the chain
• Build the customer-facing product, from the database to the screen, including views of agent spending, payments awaiting approval, and decision records
• Shape what the company builds and how it builds it, and contribute to decisions about future hires

• Have shipped TypeScript on both sides: a React front end and a Node back end, in a product people paid for
• Have built against an EVM chain or Solana, using viem, ethers, or similar
• Live in a country where the company can hire
• Будет плюсом: experience building payment or fintech dashboards, Postgres, event streams, Go, agent frameworks or MCP, or being one of the first engineers at a company

• 1.0% Equity in Saifuro, vesting
• US employees receive 100% coverage of medical, dental, and vision premiums; dependents receive 75% coverage. Outside the US, a local plan is provided through the employer of record, or $300 a month toward private coverage
• 25 Days of paid vacation plus public holidays; the company closes between Christmas and New Year
• 14 Weeks of paid parental leave for any parent
• A laptop and $1,000 toward a workspace
• $1,500 A year for learning, including conferences
• Attend six to eight work events a year, planned a quarter ahead and paid for by the company
• Flexible hours, with availability requested from 14:00 to 17:00 UTC for team calls and quick questions. The rest of the hours can be arranged freely; the company will work something out if this window falls in the middle of the night
• The role can be combined with a job at another company, provided the two do not conflict
• The role is fully remote and available in the listed countries across the Americas, Europe, the Middle East and Africa, and Asia-Pacific