Over his career in software development, David has built different types of applications like servers, web applications, PWA, hybrid applications, etc. He was responsible for the Front-End and Back-End using React/Angular and Node/Express/NestJS, respectively. He can also manage databases such as MongoDB, MySQL, and SQLite. Aside from honing technical skills over his career, David had opportunities to lead small teams of developers to achieve their goals and learn new things faster.