Jan Vallejo
Java Sr at Tata Consultancy Services
Mexico
Summary
👤
Senior🎓
Top SchoolJan Vallejo is a seasoned Java engineer with 10 years of experience delivering enterprise-grade systems across banking, consulting, and IT services in Mexico. He has driven backend modernization and integration projects using Java, EJB, WebLogic, Tuxedo, Spring and JMS, and has hands-on experience improving performance and scalability with tools like JMeter and Maven. His career spans roles at Tata Consultancy Services, Accenture México, CITI and Sonda, where he led migrations, API initiatives and cross-language integrations connecting C#, VB and EJB systems. Known for pragmatic problem-solving, he blends legacy protocol knowledge (Tuxedo/WebLogic) with modern API design to keep critical financial applications running and evolving. Comfortable working in large teams and client-facing engagements, Jan also brings a developer’s attention to tooling and automated testing that reduces risk in production deployments.
9 years of coding experience
5 years of employment as a software developer
Ingeniero en Sistemas Computacionales, Desarrollo de aplicaciones web, Ingeniero en Sistemas Computacionales, Desarrollo de aplicaciones web at Tecnológico de Estudios Superiores
Spanish, EnglishGithub contributions (5)
JANCARLO123/ionicfull
Jul 2017 - Oct 2017
Contributions:5 commits, 2 pushes, 1 branch in 3 months
JANCARLO123/angularLibro
Aug 2018 - May 2022
Contributions:1 push, 1 branch in 3 years 10 months
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