Sergio S.
FreelancerTop Rated PlusHighly skilled systems architect and developer with more than 40 years of experience designing, developing, deploying and integrating applications, from old single platform “green-screen” to multi-tier / distributed systems. Business experience in manufacturing, accounting, distributing, payroll, finance and TELCO:
✔ Strong knowledge of Java SE and JEE stacks, from early versions 1.x up to latest version
SE 17 and JEE 10 including Spring and Spring Boot.
✔ Deep understanding of old technologies such COBOL, VSAM, JCL, IMS, DB2, IMS “green screen”, etc. This knowledge allowed me to design, code and implement integrations between new applications with legacy ones.
✔ Solid leading and mentoring skills to help and encourage individuals to maximize their productivity by applying the best practices, frameworks, libraries and technology in general.
✔ I'm always learning about new technologies and tools to ease and reduce time spent in application development and deployment. Technology by itself is worth nothing if it does not solve real world problems.
Guatemala#1 / 797Top 0.13%
Sergio S. earns an estimated $9k/mo. That's 6× the typical freelancer and more than 99.84% of everyone we track.