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Leandro kowalyszyn

@leandrokowalyszyn

Backend Java developer at Unitech Corp. – Poder Judicial de Catamarca, contributing to Java microservices and automated Jenkins deployments.

Argentina

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At Unitech Corp. - Poder Judicial de Catamarca, I worked on requirements through tickets, implementing, testing, and documenting changes across Angular frontend work and Java microservices. I also participated in automated Jenkins deployments.

At Contaduría General de la Provincia de Corrientes, I designed and developed modular systems with Angular, Java, and Node.js, contributing to a 30% improvement in administrative efficiency. I automated financial reports with PL/SQL and maintained the institutional website and SIIF internal system.

During my DATUP internship, I developed React, Angular, and Node.js (NestJS) features from Figma prototypes and participated in delivering web solutions with a remote team. I’ve also developed features for POS systems and an appointment system for real clients as part of a group IT consultancy venture.

Experience

Work history, roles, and key accomplishments

Software Developer Semi Senior

Unitech Corp. - Poder Judicial de Catamarca

Mar 2026 - Oct 2026 (7 months)

Developed and maintained requirements through tickets, with implementation, testing, and documentation of changes. Worked with Angular frontend and Java microservices, participating in automated deployments with Jenkins.

Angular Java Microservices Jenkins Jira Trello Scrum

Desarrollador de software / Frontend

Contaduría General de la Provincia de Corrientes

Sep 2021 - Feb 2026 (4 years 5 months)

Designed and developed modular systems with Angular, Java, and Node.js, contributing to a 30% improvement in administrative efficiency. Automated financial reports using PL/SQL, reducing errors and delivery times.

Angular Java NodeJS Pl SQL Oracle DB DB2 GitHub Gitlab

Desarrollador React / Angular y Node.js (NestJS)

DATUP

Mar 2025 - Jun 2025 (3 months)

Developed functionalities from Figma prototypes and participated in the delivery of web solutions in a remote team. Collaborated on technical problem-solving and agile task management with Trello and GitHub.

React Angular NodeJS NestJS Figma Trello GitHub PostgreSQL

Desarrollador Frontend

Consultora de soluciones IT

Sep 2020 - Sep 2021 (1 year)

Developed functionalities for real clients, including POS systems for shops and restaurants, and a scheduling system. Worked with React.js, Angular, and Node.js, coordinating tasks with Trello and GitHub.

React Angular NodeJS Trello GitHub

Education

Degrees, certifications, and relevant coursework

Universidad Nacional del Nordeste

Licenciatura en Sistemas de Información, Sistemas de Información

Pursuing a Licenciatura en Sistemas de Información, with an intermediate degree of Analista Programador Universitario obtained in 2022. Final thesis in progress.