Work on the money layer for AI agents
Saifuro builds treasury, policy, escrow and audit infrastructure for agent payments over x402, ACP and AP2. We are a small remote team of engineers and operators. These are the roles we are hiring for now. Our API reference is public at docs.saifuro.com. Judge the engineering yourself.
Open roles
Backend Engineer, Ledger
Build the ledger we do not have. Today Saifuro keeps an append-only decision log with exact decimal arithmetic on every amount: no postings, no accounts, no balances, no settlement fact. You would design the double-entry model on top of it, ingest settlement, and get the log to a shape a controller can post. Check that gap yourself in the reference before you write to us. It is the job.
apply →Protocol Engineer
Adapters for x402, ACP and AP2 and the routing between them. The specs change monthly, so you read them closely and update fast. TypeScript and Go.
apply →Smart Contract Engineer
Escrow contracts on Base, then Solana: funds released against a signed verdict, refunds that work without us, and no path in which Saifuro can move a counterparty's money. You will work with external auditors. Solidity and Rust.
apply →Developer Relations Engineer
Example code, integration guides and direct support for teams connecting their agents. TypeScript.
apply →No role that fits? Write to contact@saifuro.com and tell us what you do well.
How we hire
You talk to a founder about the role and your background. We answer questions about the product, the stage and the money.
A working session with the team on problems close to the actual job. No whiteboard puzzles.
A scoped task paid at your rate. Both sides see what working together is like.
We reply to every application within a week, including the ones we pass on.
Before you answer a recruiter
Job scams impersonate small fintech companies, so here is what is true about us. We never ask candidates for deposits, crypto or payment details of any kind.
Real mail from us comes only from @saifuro.com addresses, and interviews are run personally by the founders. If someone asks you for money in our name, it is not us. Forward it to contact@saifuro.com.
The full list of what our process never includes, and how to verify this company without asking us, is on the hiring safety page.
Send us something you built
A repo, a write-up or a shipped product says more than a resume. Attach it to your application.