Mark Stephen M.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Experienced web developer with a diverse skill set in full-stack development. Since 2019, I have successfully delivered a range of projects, from desktop applications to web applications, using various technology stacks. Proficient in front-end technologies like HTML, CSS, and JavaScript. I excel at creating visually appealing user interfaces with frameworks like React and Vue.js. On the back-end, I have expertise in Node.js implementing RESTful APIs, authentication mechanisms, and working with databases such as MySQL, MongoDB, and PostgreSQL. With a solid grasp of the software development life cycle and Agile methodologies, I am committed to delivering high-quality code and ensuring client satisfaction. Continuous learning and staying updated with industry trends are integral to my approach, enabling me to provide innovative solutions. Let's collaborate to transform your ideas into reality. mark-stephen-maduro.github.io/portfolio/