Kaustav Bandyopadhyay

Experience

• 

  Fiverr

  Jun 2019 - Sept 2019

  Professional Freelancer

  • Successfully designed and implemented custom web applications for diverse clients using the MERN stack (MongoDB, Express.js, React.js, Node.js).• Collaborated closely with clients to gather requirements, define project scope, and deliver tailored solutions that met their specific business needs and objectives.• Maintained a high rating on Fiverr by consistently delivering projects that exceeded client expectations, leading to repeat business and positive client testimonials.

• 

  Infosys

  Sept 2019 - Apr 2022

  • Ensured scalable and maintainable codebase by adhering to MVC architecture, leading to a 25% reduction in code refactoring efforts. • Improved middleware efficiency and response times by 15% by developing and integrating custom middleware functions in Express. • Reduced user password reset issues by 50% through implementing secure password reset and encryption mechanisms. • Enhanced data integrity and application stability by implementing Mongoose data validation and robust data modeling practices. Show less • Increased code modularity and state management efficiency by leveraging React Context, Redux, and React hooks. • Enhanced user navigation and reduced load times by 20% by implementing React Router for single-page application (SPA) routing. • Achieved a reduction in state management complexity by effectively using React lifecycle methods and React Query for data fetching. • Improved user data security and platform reliability by implementing comprehensive authorization and role-based access controls. • Reduced event loop latency by optimizing asynchronous operations and effectively managing callback functions in Node.js. Show less

  • Senior System Engineer

    Nov 2021 - Apr 2022

  • System Engineer

    Mar 2020 - Oct 2021

  • System Engineer Trainee

    Sept 2019 - Feb 2020
• 

  GlobalLogic

  May 2022 - Nov 2024

  Senior Software Engineer

  • Achieved a 30% increase in user engagement by developing dynamic and responsive user interfaces using React (JSX), HTML, and CSS. • Improved database query performance by 25% through efficient schema design and indexing strategies in MongoDB and Mongoose. • Enhanced user experience by implementing real-time data updates using AJAX and JSON for seamless interactions within the application. Increased platform security and user trust by implementing JWT-based authentication and authorization systems. • Enhanced REST API performance by optimizing endpoints and middlewares in Express, ensuring fast and reliable data retrieval. • Boosted code reliability and reduced bugs by writing comprehensive unit and integration tests using Jest. • Spearheaded the adoption of ES6 features across the codebase, improving code readability and maintainability. Achieved an increase in developer productivity by creating detailed technical documentation and providing thorough troubleshooting support. • Improved performance through consistent use of modern JavaScript syntax and modular programming techniques. Increased application security through implementing input validation and sanitization techniques in JavaScript. Show less

• 

  HealthArc

  Nov 2024 - now

  Senior Software Engineer