Valentin Rodriguez
@valentinrodriguez
I build robust Java backend APIs, financial automation, and reliable management systems.
ArgentinaWhat I'm looking for
At Zenitha IT, I co-founded and lead the technical work for an early-stage startup, automating complex financial calculations with Java 21, Spring Scheduling, SQL, and PostgreSQL to achieve 99.9% daily report consistency.
I improve reliability through JUnit 5 and Mockito tests, manage Git branches and pull requests to reduce feature integration time by 20%, and strengthen multi-tenant data isolation with Spring AOP and dynamic Hibernate filters. I also collaborate closely in daily Scrum ceremonies to unblock weekly delivery.
Previously at Sugar Coach, I investigated and fixed QA-reported Java and Kotlin issues in an MVP architecture, reducing production bug-resolution time by 40%. I implemented an offline-first approach with Room and integrated remote services through Apollo GraphQL.
I'm a Computer Science undergraduate and programming instructor who has taught Java and object-oriented programming to classes of more than 80 students. I also build management systems using Java, Spring Boot, MySQL, Spring Data JPA, and iTextPDF.
Experience
Work history, roles, and key accomplishments
Co-founder & Tech Lead
Zenitha IT
Jan 2026 - Present (7 months)
Automated complex financial calculation processing, achieving 99.9% daily report consistency by developing scheduled tasks using Spring Scheduling in Java 21 and SQL/PostgreSQL databases. Ensured code quality and isolated functionality of critical components prior to deployment, achieving robust test coverage through unit test design with JUnit 5 and Mockito.
Java / Android Developer
Sugar Coach
May 2025 - Dec 2025 (7 months)
Reduced software bug resolution time in production by 40% by investigating, diagnosing, and fixing QA-reported issues within an MVP architecture using Java and Kotlin. Ensured data persistence and availability for sensitive data during offline scenarios by implementing an Offline-First architecture using Room (SQL) as the single source of truth.
Programming Instructor
Taller de TICs
Jan 2025 - Jun 2025 (5 months)
Guided 90% of a class of over 80 students with varying technical skill levels to successfully deliver their final software projects by designing and delivering a structured Java and OOP curriculum.
Education
Degrees, certifications, and relevant coursework
Universidad Tecnológica Nacional (UTN)
Associate Degree, Programming
2025 -
Grade: 9
Pursuing an Associate Degree in Programming with a GPA of 9, maintaining advanced regular student status.
Tech stack
Software and tools used professionally
Availability
Location
ArgentinaAuthorized to work in
Portfolio
github.com/valen-rodriguezJob categories
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