Senior / Staff Engineer, DEX Trading System
Core
Design, build, and scale backend systems for OKX's DEX trading products, owning the trading lifecycle from quote discovery to execution and reconciliation.
Role type
Senior/Staff backend engineer (DEX trading systems)
Builds
Backend services for quote aggregation, order management, transaction orchestration, and execution tracking for decentralized exchange products
Domain
Cryptocurrency / Decentralized Finance (DeFi) / Blockchain
Required skills
Java, distributed systems, concurrency, relational databases, caching, messaging systems, high-availability architecture, blockchain transactions, smart contract interactions, DeFi trading mechanisms
Preferred skills
None stated
Technologies
Java, blockchain RPC providers, indexing services
Responsibilities
Design and develop backend services for quote aggregation, order management, transaction orchestration, and execution tracking; Build reliable integrations with DEX protocols and liquidity sources; Ensure trading services remain reliable under high concurrency and traffic spikes; Optimize database access, transaction boundaries, and asynchronous processing; Support trading workflows across multiple blockchain ecosystems; Build data synchronization and reconciliation mechanisms
Seniority
Senior, hands-on IC