Hieu Vo

BE developer

IT • Fulltime

May 2017 - Present • 9 yrs 3 mos

I am a Backend Developer with solid experience building scalable and reliable web applications. I specialize in backend development using Laravel, Node.js, and NestJS, with strong experience working with MySQL for database design and query optimization. In my previous work, I have developed RESTful APIs, integrated third-party services, and implemented backend systems that support complex business logic for web and mobile applications. I have also worked on optimizing backend performance by improving database queries, indexing strategies, and refactoring legacy code to make systems faster and more maintainable. One of my key contributions in several projects was identifying performance bottlenecks in backend services and improving response times through SQL optimization, caching strategies, and code refactoring. These improvements helped systems handle large datasets and high traffic more efficiently. I also have experience maintaining and upgrading legacy systems, including upgrading framework versions and ensuring existing features remain stable during the process. This includes reviewing dependencies, improving code quality, and implementing better project structures. In addition to development, I have worked with Docker, Git workflows, and CI/CD pipelines to support reliable deployments and improve development efficiency. I often collaborate with frontend developers, QA teams, and product managers to translate business requirements into practical backend solutions. My focus is always on building clean, maintainable, and efficient backend systems that can scale and support long-term product growth. I enjoy solving technical challenges, improving system performance, and delivering reliable backend solutions that help products run smoothly.