Mahfuz Islam

Full-stack Developer (Team Lead)

Oct 2023 - Present • 3 yrs

As a Full-stack Developer and Team Lead at ATI Limited, I lead a team of developers in designing, building, and maintaining scalable web applications for enterprise clients. Key Responsibilities & Achievements: - Led end-to-end development of 10+ full-stack web applications using React.js, Node.js, Express.js, and MongoDB/PostgreSQL. - Managed a team of 5 developers, ensuring code quality, timely delivery, and agile project management. - Architected RESTful APIs and integrated third-party services to enhance application functionality. - Optimized application performance, reducing load time by 40% through efficient coding and database query optimization. - Implemented JWT-based authentication and role-based access control for secure user management. - Collaborated with cross-functional teams including UI/UX designers, product managers, and QA engineers. - Conducted code reviews, mentored junior developers, and established coding standards. - Deployed applications on AWS, Vercel, and Heroku with CI/CD pipelines. This role has sharpened my full-stack expertise, leadership abilities, and client communication skills — ensuring every project exceeds expectations.

Jr. Software Development Engineer

Oct 2022 - Oct 2023 • 1 yr

Worked as a Junior Software Development Engineer at ATI Limited, contributing to the design, development, testing, and maintenance of modern web applications. Developed responsive and user-friendly web interfaces using React.js and JavaScript, built backend services and REST APIs using Node.js, and worked with relational and NoSQL databases. Collaborated with team members to implement new features, troubleshoot technical issues, optimize application performance, and deliver reliable software solutions. Gained hands-on experience in full-stack development, API integration, database management, Git-based development, debugging, and deployment. Contributed to improving application functionality, maintainability, and overall user experience.

React Developer

Apr 2022 - Oct 2022 • 6 mos

Worked as a React Developer at ATI Limited, developing responsive and user-friendly web applications using React.js, JavaScript, HTML, and CSS. Built reusable and maintainable UI components, integrated REST APIs, implemented dynamic features, and optimized applications for performance and responsiveness. Collaborated with team members to understand requirements, troubleshoot issues, fix bugs, and deliver high-quality web solutions. Gained practical experience in modern frontend development, API integration, Git, debugging, and responsive web design.