Keno 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.

Java Developer with 17+ Years of Experience I’m a skilled Java developer with 17 years of experience specializing in Spring Boot, Spring MVC, and Struts 2, focusing on backend development. For the past 8 years, I’ve built and maintained high-performance e-commerce platforms, integrating secure payment systems like Stripe and PayPal. Previously, I developed loan application systems for multiple banks, ensuring seamless functionality and data integrity. My early career included frontend development using JSP and JSTL, giving me a well-rounded skill set. My strengths are simplifying complex solutions while maintaining quality, clean code, meeting tight deadlines and very approachable with junior developers.