Senior Java Engineer – Backend, Web3 & AI Platform

jobr.pro; Hong Kong; On-site; HKD 900,000 - 1,500,000; Full time

Benefits offered by this job

Competitive compensation

Comprehensive insurance coverage

International team & open engineering

Job summary

OKX in Hong Kong seeks an experienced backend engineer to design, build, and optimize the Wallet Earn on-chain investment platform. You will scale high-concurrency systems, ensure fund safety, and integrate with DeFi protocols across multiple chains.

You will contribute to the AI Agent Marketplace core platform, own architecture of Agent, Task, and Order, and help strengthen reliability, observability, and security in a fast-moving Web3/AI environment.

Qualifications

• Strong Java fundamentals with Spring Boot/Spring Cloud experience.
• Experience building high-concurrency, highly available distributed systems.
• Familiarity with DeFi protocols and on‑chain integration basics.
• Experience with MySQL, Redis, MQ, and RPC.
• Ability to analyze production issues using logs and tracing.
• Strong ownership and collaboration in a fast-moving team.

Responsibilities

• Design, build, and optimize the backend architecture of the Wallet Earn on-chain platform.
• Design and build the aggregated-investment risk-control platform for stability and scalability.
• Improve protocol integration capabilities and onboarding efficiency.
• Support multi-chain asset/position display across major chains and DeFi protocols.
• Own architecture and development of core modules for the AI Agent Marketplace and explore Web3 integrations.
• Maintain high availability and performance; diagnose production issues and optimize systems.
• Improve system observability, monitoring, and fault-tolerance.

Skills

Java

High-concurrency

Distributed systems

Log analysis

Debugging production issues

Tools

Spring Boot

Spring Cloud

MySQL

Redis

MQ

RPC

Job description

OKX in Hong Kong seeks an experienced backend engineer to design, build, and optimize the Wallet Earn on-chain investment platform. You will scale high-concurrency systems, ensure fund safety, and integrate with DeFi protocols across multiple chains.

You will contribute to the AI Agent Marketplace core platform, own architecture of Agent, Task, and Order, and help strengthen reliability, observability, and security in a fast-moving Web3/AI environment.