Job description
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.