Job description
 
                         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 settlement 
- Implement Merkle tree verification for trade batch integrity 
- Build wallet transaction signing infrastructure for automated settlement 
- Create monitoring systems for failed settlements and automatic retry logic 
- Design and implement program-controlled vaults with secure custody patterns 
Integration & Testing (10%) 
- Integrate with Pyth/Switchboard price oracles for mark price and funding rates 
- Build comprehensive test suites (unit, integration, and on-chain testing) 
- Deploy and maintain programs on Solana devnet/testnet/mainnet 
- Performance optimization for high-frequency trading scenarios 
- Documentation of smart contract architecture and settlement flows 
Key Technical Challenges 
- Performance: Handle 100+ trades/second with sub-second settlement latency 
- Security: Manage user funds non-custodially with multiple safety mechanisms 
- Scalability: Batch thousands of trades efficiently to minimize transaction costs 
- Risk Management: Build real-time liquidation systems that protect protocol solvency 
- UX: Enable fast trading via ephemeral wallets while maintaining security 
Required Qualifications 
Technical Skills: 
- 3+ years of professional Rust development experience 
- 1+ 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 development 
- Proficiency with cryptographic signatures and wallet transaction signing 
- Deep 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 patterns 
- Familiarity with common DeFi security patterns and vulnerabilities 
Software Engineering: 
- Strong systems programming background 
- Experience with concurrent/parallel programming 
- Ability to write clean, well-tested, production-quality code 
- Comfortable working in fast-paced startup environment 
- Self-directed with strong problem-solving skills 
Preferred Qualifications 
- Experience building settlement/relayer infrastructure for DEXs 
- Knowledge of dark pool or institutional trading mechanics 
- Contributions to open-source Solana projects 
- Experience with Solana web3.js, anchor-ts, or similar SDKs 
- Background in smart contract security auditing 
- Familiarity with TypeScript/Node.js for off-chain components 
- Understanding of market maker systems and order book mechanics 
- Previous work on high-leverage or derivatives protocols 
- Experience with program upgrades and migration strategies 
 
                    
                    Required Skill Profession
 
                     
                    
                    Other General