Senior/Staff Java Engineer (Web3)

TL;DR

Senior/Staff Java Engineer (Web3): Designing and optimizing the backend architecture for the Wallet Earn on-chain aggregated investment platform and AI Agent Marketplace with an accent on high-concurrency distributed systems and DeFi protocol integration. Focus on building risk control platforms, multi-chain asset parsing, and autonomous AI agent infrastructure.

Location: Hong Kong or Singapore

Company

OKX is a leading crypto exchange and the developer of OKX Wallet, providing global access to crypto trading and decentralized applications.

What you will do

• Design and optimize the backend architecture for the Wallet Earn on-chain aggregated investment platform.
• Build an aggregated-investment risk control platform to ensure system stability, fund safety, and business scalability.
• Develop a multi-chain user asset platform, supporting real-time parsing and display across major public chains and DeFi protocols.
• Own the architecture and development of core modules (Agent, Task, Order) for the AI Agent Marketplace.
• Diagnose and resolve complex production issues related to performance bottlenecks, data consistency, and fund safety.
• Enhance system reliability through improved monitoring, alerting, and exception-compensation capabilities.

Requirements

• Solid Java fundamentals with strong command of Spring Boot and Spring Cloud.
• Hands-on experience with MySQL, Redis, MQ, and RPC middleware.
• Proven experience building high-concurrency, high-availability distributed systems.
• Understanding of DeFi protocols (e.g., Aave, Morpho, Pendle) and smart contract fundamentals.
• Strong systems analysis and architecture design skills, preferably from large-scale consumer (To C) or financial products.
• Ability to independently own core-module design and drive complex projects to high-quality delivery.

Nice to have

• Familiarity with EVM, Solana, and Tron account models and transaction mechanics.
• Experience in smart contract development or on-chain protocol integration.
• Background in building high-concurrency trading, core financial, or payment systems.
• Understanding of on-chain risk control, KYT, and AML mechanisms.
• Experience with LLMs, MCP, Function Calling, or Agent-to-Agent (A2A) protocols.

Culture & Benefits

• Competitive compensation and long-term incentive plan.
• Comprehensive insurance coverage for employees and their families.
• International team with an open engineering culture and significant technical growth opportunities.
• Deep involvement in frontier Web3 and AI infrastructure development.