- Built scalable microservices with Node.js, boosting application performance by 20%.- Delivered features for three successful product releases, aligned with project goals.- Optimized DynamoDB queries, cutting execution time by 30%.- Designed Apollo GraphQL APIs, reducing API response time by 15%.- Developed a modular microservices architecture, enhancing system agility and scalability.- Improved data processing efficiency by 40% using AppSync aggregation queries.- Led microservices architecture implementation, reducing system downtime by 50%.- Implemented Test Driven Development (TDD) with Jest, lowering bug density by 25% and increasing code coverage by 10%.- Mentored junior developers, advancing two to mid-level roles.- Streamlined development processes, improving efficiency by 20%.- Collaborated with cross-functional teams to meet business objectives, achieving 90% customer satisfaction.

• Engineered scalable and robust backend systems using AWS Lambda and Node.js, leveraging modern cloud technologies to enhance user satisfaction for an E-commerce and Inventory Management web application• Designed and implemented user-friendly interfaces using HTML, CSS, AWS Amplify, and modern JavaScript frameworks like React, ensuring responsive and optimized web applications across various devices, and enhancing performance and scalability• Developed secure authentication and authorization mechanisms using AWS Cognito, employing techniques like JWT (JSON Web Tokens) and OAuth, to ensure only registered users can access premium content and enhance overall application security• Integrated payment gateways such as Stripe and PayPal using AWS API Gateway and AWS Lambda, facilitating seamless payment processing, ensuring secure transactions and compliance with relevant regulations while optimizing user registration workflows including email verification and password management• Conducted thorough testing including unit testing, integration testing, and user acceptance testing, utilizing tools like Jest and Postman to identify and fix bugs, ensuring the reliability of AWS-hosted Node.js APIs