Javier S.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.

I have an engineering degree in Strategic Information Systems from the Polytechnic University of Tlaxcala, México. I have three years of experience as a professional developer. I have worked on real-time projects here in México using Java, Spring, Hibernate, AngularJS, Bootstrap, etc., also through Upwork platform. I like so much to learn new things and share the knowledge with my development team. I always try to do my best.