Back End Developer

1. Core Job Responsibilities

Based on the JD description, you will be primarily responsible for the following areas:

Blockchain Data Processing System Architecture

• 3+ years of experience in exchange core system development
• Design indexing systems, RPC interaction layers, and event stream processing architecture
• Build real-time data pipelines (e.g., Kafka/RabbitMQ integration)

High-Performance API Development

• Build REST/WebSocket/GraphQL interfaces
• Handle low-latency requirements in high-frequency trading scenarios

DeFi Application Logic Implementation

• Price oracle integration
• Trading simulation engine development; 3+ years of futures or spot trading system development experience
• Risk control system implementation

Microservices Architecture Design

• Wallet interaction services
• Trading queue management
• Gas fee optimization strategies

Infrastructure Reliability Assurance

• Node management
• Load balancing
• Failover systems

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2. Technical Stack Requirements Analysis

Required Skills:

• 5+ years of backend development experience (Java/TypeScript/Rust/Go), proficient in EVM smart contracts
• Blockchain interaction experience (JSON-RPC, ethers.js/web3.py)
• Database optimization (PostgreSQL/TimescaleDB/Redis)
• Asynchronous architecture design (Kafka/RabbitMQ/Celery)

Preferred Knowledge:

• Web3 ecosystem components (EVM, The Graph and other indexing solutions)
• Security practices (rate limiting, input sanitization, replay attack protection)
• Cloud deployment experience (AWS/GCP, containerization, IaC)