Developed and optimized API endpoints for financial transactions, including databasequeries and user validations, leveraging Node.js to implement robust logic for buy, sell,modify, and cancel orders, ensuring high performance in a high-frequency tradingenvironment. Engineered WebSocket chat applications and Server-Sent Events (SSE) for real-timenotifications, enhancing user engagement and communication capabilities. Implemented Apache Kafka for efficient and reliable financial and trading updates,catering to the demands of High-Frequency Trading (HFT) environments. Conducted comprehensive research on blockchain technology and developed robust APIsfor Bitcoin, Litecoin, and XRP, leveraging Node.js to create transaction listener serviceswith optimized MySQL database queries for seamless integration and data management.:Translated complex requirements into scalable MVC model functions. Guided junior devs in Linux, AWS, CI/CD, fostering teamwork, Git Version Controls.Achievement:• Cost Reduction: Automated AWS instance shutdowns, cut costs by 30%.• Productivity Enhancement: Established CI/CD pipeline, reduced development time.• AI Tools Advocacy: Promoted GitHub Copilot, ChatGPT 4 for productivity and learning.

 Builds robust RESTful APIs using Node.js, Express.js, and relevant frameworks.Implements secure endpoints with authentication and authorization. Proficient with MongoDB, designing schemas and optimizing queries. Utilizes ORMs likeSequelize or Mongoose for seamless integration. Achievement Implemented a caching mechanism that reduced API response times by 50%,significantly improving the overall performance and user experience of the application.