Smart Contract Engineer (Rust, Solana)

Role overview Own the Solana smart contract work for an agent-payment product, writing Rust programs with Anchor or native Solana tooling. The main project is a USDC escrow program: funds sit in a program-controlled vault and can be released to a seller after a signed decision or refunded to a buyer if a deal fails. You will also own signature checks, audits, releases, and behavioral consistency with the EVM implementation.

Responsibilities - Design, implement, and test the escrow program, including vault controls and release and refund flows. - Verify signed decisions onchain before allowing funds to move. - Prepare for external audits before mainnet upgrades, respond to findings, and manage releases. - Maintain an upgrade-authority approach that addresses auditor concerns. - Coordinate with the EVM engineer on a shared deal specification and tests that demonstrate parity across chains.

Requirements - Experience writing Solana programs, using Anchor or native development tools. - Residence in a country where the position can be hired.

Nice to have - Understanding of signer and owner checks and how their omission can expose a program to fund loss. - Solidity experience, or familiarity with SPL Token, Token-2022, USDC on Solana, or cross-chain transfer systems. - Security research, bug bounty work, or open-source contributions.

Benefits and work setup - US salary range: $170,000–$220,000; offers elsewhere are benchmarked to the local market and paid in USD or optionally USDC. - Vesting equity, health coverage, 25 days of paid vacation plus public holidays, year-end closure, and 14 weeks of paid parental leave. - Laptop, $1,000 workspace allowance, and $1,500 annual learning budget; work-related conference travel is also covered. - Flexible hours, with team overlap expected from 14:00 to 17:00 UTC. Mainnet incidents may require attention outside that window. - A second job is permitted when there is no conflict and it does not involve competing work or these programs.