Smart Contract Engineer

Own the on-chain payment rails for BlockJobs — USDC subscriptions and auto-apply charges on Solana — writing secure, audited contracts and integrations. What you'll do • Design and implement on-chain payment and subscription logic on Solana • Build and maintain wallet integrations (Phantom) and transfer verification • Write thorough tests and coordinate audits for anything handling funds • Stay current on best practices and common exploit vectors What we're looking for • 3+ years writing smart contracts (Solana/Rust or EVM/Solidity) • Strong security mindset and testing discipline • Familiarity with SPL tokens, USDC, and wallet adapters • Track record shipping audited, production on-chain code Why BlockJobs We're building the job board crypto talent actually wants to use — full job descriptions, AI matching, and one-click auto-apply paid in USDC on Solana. Small team, real ownership, fully remote.