SwapRail
2 - 10 employees
₿ Crypto
🔐 Security
Crypto • Security
SwapRail is a cross-chain self-custody crypto wallet designed to provide a professional, trustworthy experience for moving value across networks. The product emphasizes clear, readable route summaries, pre-sign fee visibility, transaction simulation, and a single coherent wallet surface that prioritizes EVM-to-Solana flows (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain -> Solana). Security-first features include local key encryption, hardware wallet support, smart-contract risk warnings, and continuous execution state visibility, with destination-aware flows that help users continue actions such as staking after settlement.
Backend Engineer
Job not on LinkedIn
🔥 56 minutes ago
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SwapRail
2 - 10 employees
₿ Crypto
🔐 Security
Crypto • Security
SwapRail is a cross-chain self-custody crypto wallet designed to provide a professional, trustworthy experience for moving value across networks. The product emphasizes clear, readable route summaries, pre-sign fee visibility, transaction simulation, and a single coherent wallet surface that prioritizes EVM-to-Solana flows (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain -> Solana). Security-first features include local key encryption, hardware wallet support, smart-contract risk warnings, and continuous execution state visibility, with destination-aware flows that help users continue actions such as staking after settlement.
📋 Description
• Design and implement scalable backend services and APIs • Build routing and aggregation logic for swap execution across multiple liquidity sources • Integrate on-chain and off-chain data sources (RPC nodes, indexers, third-party APIs) • Develop simulation and validation layers for transaction execution • Optimize system performance for low-latency and high-throughput scenarios • Design data models for quotes, routes, transactions, and execution states • Implement monitoring, logging, and observability across services • Collaborate with wallet and frontend teams to ensure consistency in execution flows
🎯 Requirements
• Strong experience with Node.js / TypeScript / Go / Rust • Experience building high-performance backend systems • Strong understanding of asynchronous systems and concurrency • Experience with PostgreSQL and data modeling • Familiarity with microservices architecture and distributed systems • Experience integrating blockchain data or Web3 systems • Nice to Have: Experience with DeFi protocols or aggregators (1inch, 0x, Uniswap) • Experience building trading or execution systems • Experience with blockchain indexing (The Graph, custom indexers) • Understanding of MEV, routing optimization, and slippage control • Experience with caching layers (Redis) and performance optimization
🏖️ Benefits
• Remote / Work from Home • Part-time preferred / Full-time available
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