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Registration: 25.04.2025

José Carlos Ulchak

Specialization: Full-Stack Developer
— I'm a backend-focused full-stack developer and I like to bring together complex business needs with smart, efficient technical solutions. — I have worked across different phases of product development in my years of experience, ranging from investigating legacy systems and deconstructing their logic to designing and building new web applications that best serve business requirements. — What differentiates me is my extensive background in system analysis with hands-on experience in Node.js, Java, React, and a broad array of related technologies, libraries, and frameworks. This combination not only makes me a good developer but also one who sees the larger picture and can push projects forward with a strategic, business-focused mindset.
— I'm a backend-focused full-stack developer and I like to bring together complex business needs with smart, efficient technical solutions. — I have worked across different phases of product development in my years of experience, ranging from investigating legacy systems and deconstructing their logic to designing and building new web applications that best serve business requirements. — What differentiates me is my extensive background in system analysis with hands-on experience in Node.js, Java, React, and a broad array of related technologies, libraries, and frameworks. This combination not only makes me a good developer but also one who sees the larger picture and can push projects forward with a strategic, business-focused mindset.

Skills

Java
JavaScript
TypeScript
HTML / CSS
SQL
Node.js
React
Express.js
Spring Boot
Hibernate
JasperReports
Tailwind CSS
MS SQL
Oracle
PL/SQL
Git / GitHub / GitLab
Jira
Jenkins
Confluence
Fastify
TypeORM
Prisma
Radix UI
Liquibase

Work experience

Full-Stack Developer
since 06.2023 - Till the present day |Dispatch Courrier
Node.js, TypeScript, Fastify, TypeORM, MS SQL, React, Radix UI, Tailwind CSS
● Full-stack software developer, responsible for migrating a legacy Delphi system to a modern web-based platform using Node.js, typescript, Fastify, typeORM, MS SQL, React.js, radixUI, tailwind CSS.
Backend Software Developer
01.2021 - 10.2023 |Univision Tecnologia & Unimed Curitiba
Java, Node.js, PL/SQL, Hibernate, Jasperreports, Git, Kafka, Gitlab, Jira, Confluence, Oracle, Agile, Scrum
● Developed and optimized APIs for a healthcare software using Java, Node.js, PL/SQL, Hibernate, Jasperreports, Git, Kafka, Gitlab, Jira, Confluence, Oracle, Agile, Scrum. ● Designed regulatory-compliant reports using Jasperreports. ● Led the business analysts team aligning business objectives to technical solutions.
Web Developer
10.2020 - 07.2021 |SOS Courrier
JavaScript, CSS, HTML, ASP.NET, VB.NET, SQL, IIS, Git, GitHub
● Redesigned the web application with a responsive interface and new features. ● Technologies used: JavaScript, CSS, HTML, ASP.NET, VB.NET, SQL Server, IIS, Git, GitHub.
Team Leader / System Analyst
07.2018 - 12.2020 |Unimed Curitiba
SQL
● System administration (user management, permissions, monitoring, updates, roadmap), SQL training for developers, support for the development team. ● Team activities follow-up, software roadmap, monthly management report, budget control.
System Analyst
05.2014 - 07.2018 |Hospital São Vicente
SQL, PL/SQL
● Advanced development in PL/SQL of reports, views, functions, jobs, procedures, triggers. ● System administration, user training and all levels of support.

Educational background

Information Systems (Bachelor’s Degree)
2012 - 2016
FESP University

Languages

PortugueseNativeEnglishAdvanced