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Description

Senior Java Backend Engineer (DEX)

Location: Hong Kong

Department: Engineering

We are seeking a seasoned Backend Engineer with deep expertise in decentralized finance (DeFi) to lead the architectural design and development of our client's high-performance DEX platform. You will be responsible for building the core components of a world-class trading environment, focusing on ultra-low latency, high concurrency, and uncompromising security.

Key Responsibilities

Architectural Leadership: Design and develop the core server-side architecture for a Decentralized Exchange (DEX).
Core Module Engineering: Lead the implementation of critical modules, including matching engines, order books, market data broadcasting, risk management, and clearing/settlement systems.
Infrastructure & Connectivity: Develop and maintain high-performance trading gateways (REST/WebSocket), market data feeds, and K-line services.
Performance Optimization: Ensure the stability and performance of high-concurrency, low-latency trading systems through rigorous JVM tuning and system-level optimizations.
Resilience & Security: Build foundational capabilities for data persistence, comprehensive logging, automated backups, and robust disaster recovery protocols.
Cross-Functional Collaboration: Partner closely with Smart Contract and Frontend teams to ensure seamless end-to-end integration across the entire trading lifecycle.

Required Qualifications & Skills

Educational Background: Bachelor’s degree or higher in Computer Science, Software Engineering, or a related technical field.
Java Expertise: 8+ years of professional Java development experience, with mastery of multi-threading, concurrency models, and JVM performance tuning.
DEX Domain Knowledge: 3+ years of direct experience in DEX/Exchange server-side development, with a deep understanding of matching, clearing, and risk control workflows.
High-Performance Frameworks: Proven experience with LMAX Disruptor, Chronicle, or similar high-performance frameworks; familiarity with Exchange-core architectures is essential.
Data Management: Expertise in MySQL, Redis, and MongoDB, including advanced database design, index optimization, and distributed transaction management.
System Reliability: Deep understanding of multi-active database deployments and disaster recovery; ability to lead team-wide emergency drills.
Messaging & Streaming: Proficiency in Kafka (consumer groups, partitioning, persistence) and real-time data processing.
Cloud & DevOps: Hands-on experience with Docker and Kubernetes (Deployment, Service, Ingress, Monitoring); proficiency with AWS or Alibaba Cloud ecosystems (EC2/ECS, RDS, OSS).

Preferred Attributes (Bonus)

Experience with EVM-based on-chain settlement, Oracles, and off-chain data integration.
Familiarity with modern observability stacks, including Prometheus, Grafana, and ELK.
Polyglot capabilities: Ability to develop stable auxiliary services in Golang or Node.js for on-chain data retrieval and analysis.

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Frequently Asked Questions

We prioritize job seekers as our customers, unlike bigger job sites, by charging a small fee to provide them with curated access to the best companies and up-to-date jobs. This focus allows us to deliver a more personalized and effective job search experience.
We've got over 200,000 jobs from 15,000+ vetted companies. No fake or sleazy jobs here!
We aggregate jobs from 15,000+ companies' career pages, so you can be sure that you're getting the most up-to-date and relevant jobs.
We're the only job board *for* software engineers, *by* software engineers… in case you needed a reminder! We add thousands of new jobs daily and offer powerful search filters just for you. 🛠️
Every single hour! We add 2,000-3,000 new jobs daily, so you'll always have fresh opportunities. 🚀
Typically, job searches take 3-6 months. EchoJobs helps you spend more time applying and less time hunting. 🎯
Check daily! We're always updating with new jobs. Set up job alerts for even quicker access. 📅

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