Main responsibilities: Quantitative trading system development: Design, develop, and optimize quantitative trading systems using Java. Algorithm optimization: Develop and optimize trading strategies to improve trading efficiency and returns. Data analysis: Analyze market data to extract effective information to support trading decisions. System maintenance: Ensure the stability and reliability of the trading system, and promptly resolve system issues. Collaborative development: Work closely with cross departmental teams to ensure timely project delivery. Document writing: Write and maintain development documents to ensure code readability and maintainability.