SOLANA BLOCKCHAIN ENGINEER (RUST) (Paid)
Role Overview
Job Title : Solana Blockchain Engineer - Smart Contracts & Settlement Infrastructure
Company : GoQuant Technologies Inc.
Location : Remote
Employment Type : Full-time
Start Date : Immediate
Primary Responsibilities
Smart Contract Development (60%)
- Design and implement Solana programs using Rust and Anchor framework
- Build perpetual futures contracts with dynamic funding rates (1-second calculation, hourly payment)
- Develop position management system supporting up to 1000x leverage with robust liquidation mechanics
- Implement collateral vaults, margin calculations, and PnL tracking
- Create ephemeral wallet authority system with on-chain permission management
- Build settlement batching mechanisms for high-throughput trade execution
Settlement Infrastructure (30%)
Develop transaction batching and relayer services for efficient on-chain settlementImplement Merkle tree verification for trade batch integrityBuild wallet transaction signing infrastructure for automated settlementCreate monitoring systems for failed settlements and automatic retry logicDesign and implement program-controlled vaults with secure custody patternsIntegration & Testing (10%)
Integrate with Pyth / Switchboard price oracles for mark price and funding ratesBuild comprehensive test suites (unit, integration, and on-chain testing)Deploy and maintain programs on Solana devnet / testnet / mainnetPerformance optimization for high-frequency trading scenariosDocumentation of smart contract architecture and settlement flowsKey Technical Challenges
Performance : Handle 100+ trades / second with sub-second settlement latencySecurity : Manage user funds non-custodially with multiple safety mechanismsScalability : Batch thousands of trades efficiently to minimize transaction costsRisk Management : Build real-time liquidation systems that protect protocol solvencyUX : Enable fast trading via ephemeral wallets while maintaining securityRequired Qualifications
Technical Skills :
3+ years of professional Rust development experience1+ years building on Solana (programs deployed to mainnet preferred)Strong understanding of Solana's programming model (accounts, PDAs, CPIs, rent)Experience with Anchor framework for Solana program developmentProficiency with cryptographic signatures and wallet transaction signingDeep knowledge of blockchain fundamentals (consensus, finality, state management)DeFi Experience :
Understanding of perpetual futures mechanics (funding rates, leverage, liquidations)Experience with DeFi protocols (DEXs, lending, derivatives)Knowledge of oracle integration patternsFamiliarity with common DeFi security patterns and vulnerabilitiesSoftware Engineering :
Strong systems programming backgroundExperience with concurrent / parallel programmingAbility to write clean, well-tested, production-quality codeComfortable working in fast-paced startup environmentSelf-directed with strong problem-solving skillsPreferred Qualifications
Experience building settlement / relayer infrastructure for DEXsKnowledge of dark pool or institutional trading mechanicsContributions to open-source Solana projectsExperience with Solana web3.js, anchor-ts, or similar SDKsBackground in smart contract security auditingFamiliarity with TypeScript / Node.js for off-chain componentsUnderstanding of market maker systems and order book mechanicsPrevious work on high-leverage or derivatives protocolsExperience with program upgrades and migration strategies