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