José Carlos de Freitas
Staff Software Engineer @ Insider, Inc. | Master of Computer ScienceEducation
Master's degree in Computer Science
UNESP - Universidade Estadual Paulista
2017 - 2020
Bachelor's degree in Computer Science
UNESP - Universidade Estadual Paulista
2013 - 2016
200+ Technology Courses
Alura
2017 - Present
Associate's degree in Computer Science
ETEC Philadelpho Gouvêa Netto
2011 - 2012
Publications
An Efficient Parallel Optimization for Co-Authorship Network Analysis
IEEE International Conference on Big Data (Big Data 2017)
Analysing research collaboration through co-authorship networks in a big data environment: an efficient parallel approach
International Journal of Big Data Intelligence (IJBDI)
Languages
Portuguese
Native
English
Fluent
About me
I'm a software engineer with over a decade of experience in computer science. I continuously strive for excellence in my career. I started programming at 14 in 2011 and have since built an impressive academic foundation, earning associate’s, bachelor’s, and master’s degrees in computer science. Along the way, I published two articles at international conferences, showcasing my expertise.
My dedication to learning and growth has led to rapid career progression. I earned promotions almost yearly and achieved Staff Software Engineer 3 before age 30. Known for being highly proactive, I consistently deliver value fast, driving impactful results across teams and projects. I've completed over 200 courses on Alura and successfully delivered many end-to-end projects, ranging from landing pages to complex applications and systems.
My dedication to engineering excellence and developer experience has consistently raised the standard for every team I've been part of. I'm always eager to tackle new challenges, innovate, and push the boundaries of what's possible in technology.
Career
Senior Staff Software Engineer
Business Insider
Jan 2025 - Present
Senior Staff Software Engineer
Business Insider
Jan 2024 - Jan 2025
Staff Software Engineer
Business Insider
Apr 2022 - Jan 2024
Senior Software Engineer
Business Insider
Jul 2021 - Mar 2022
Co-founder
3R Eventos
Feb 2018 - Jan 2024
As an event coordinator, my ultimate goal is to create unforgettable experiences that bring joy and happiness to people's lives. To achieve this, I am responsible for overseeing various aspects of event planning and execution, including financial management, team management, customer service, marketing, and theme development.
In terms of financial management, I work closely with clients to establish budgets and ensure that all expenses stay within the allocated funds. I also negotiate contracts with vendors and suppliers to secure the best rates and ensure high-quality services.
As the team leader for a group of around 70 event staff, including bartenders, security personnel, and other professionals, I manage schedules, delegate tasks, and oversee the execution of all event-related activities. I prioritize team communication and collaboration to ensure seamless event operations and customer satisfaction.
As the point of contact for customer service inquiries, I am responsible for handling client complaints and resolving any issues that arise during the event. I also work with the marketing team to promote events and develop themes that align with the clients' preferences and expectations.
Overall, my passion for event planning, attention to detail, and strong leadership skills enable me to execute successful events that create unforgettable memories for all attendees.
Advanced Programmer Analyst
QAT Global
Dec 2020 - Jun 2021
As an Advanced Programmer Analyst, I played a critical role in developing and maintaining a large utility automation application in a team of 14 using Scrum, Java, Spring Boot, SQL Server, HTML, CSS, JavaScript, jQuery, Jenkins, Unit Testing (JUnit), SVN, and many others.
Co-founder and Software Engineer
3r Agência
Oct 2016 - Dec 2020
As a Co-founder and Software Engineer at 3r Agência, I leveraged my extensive knowledge of technologies such as Java, Spring Boot, HTML, CSS, JavaScript, and UX/UI design to create innovative and reliable solutions for entrepreneurs and companies. Through my strong leadership and communication skills, I effectively managed cross-functional teams, collaborated with clients, and delivered high-quality solutions that exceeded expectations. My passion for creating exceptional user experiences and my commitment to staying up-to-date with emerging technologies made me an asset to the company during my time there.
Tech Lead @ Database Group
UNESP - Universidade Estadual Paulista
Jan 2016 - Apr 2018
Software Engineer @ Database Group
UNESP - Universidade Estadual Paulista
Jan 2014 - Dec 2015
As Technical Lead and Software Engineer, I managed project teams, defined project requirements and schedules, and developed project documents. I assisted the development team, reviewed their activities, and conducted project tests, reporting any bugs found. Additionally, I administered databases and developed and maintained Database Group's systems using Java, Spring Boot, JPA/Hibernate, PostgreSQL, JSP, HTML, CSS, Less, Bootstrap, JavaScript, and jQuery.
Skills
Programming Languages
I have 10 years of experience with HTML, CSS, and JavaScript, and 6 years of experience with TypeScript. I also have 6 years of experience with NodeJS, 1 year of experience with Go, and 7 years of experience with Java. I have also received training in Scala (in 2018), PHP (in 2017), C# (in 2016), C (in 2013), C++ (in 2012), and Visual Basic (in 2012).Databases
I have 7 years of experience with PostgreSQL, 3 years of experience with MongoDB, and 2 years of experience with ElasticSearch, MySql and Neo4j. I also have 1 year of experience with Redis. Additionally, I received training in Sqlite in 2012.Frameworks
I have 2 years of experience with with NestJS and React, 3 years with ExpressJS and Angular2+, and 6 years with Spring Boot and jQuery. Additionally, I have trained in Vue, Sass, jUnit, Less, Spark, WordPress, GatsbyJS, NextJS, Jenkins, Apache Kafka, Flutter, Webpack, and Laravel, with varying levels of experience.Others
I have 2 years of experience with GitHub Actions, Docker, Kubernetes, and AWS. I also have 6 years of experience with Unit Testing, Integration Testing, Git, SEO, NPM, Postman, UX/UI, and 3 years of experience with PWA. Additionally, I have 7 years of experience with Maven and 3 years of experience with SVN. I also have 3 years of experience with Scrum, and was trained in Kanban in 2017.
Other Skills
Microsoft Office
I have been using Microsoft Office for over 10 years. I have experience with Word, Excel, and PowerPoint.Design
I have trained in Adobe Photoshop, Illustrator, and Adobe XD. I also have experience with Figma.
Projects
Fazenda Aberta
https://fazendaaberta.com.br
2019 - 2021
Concept, develop and maintain one of the largest online farm catalog in Brazil, which receives over a thousand daily accesses. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Thymeleaf, HTML, CSS, JavaScript, jQuery, Bootstrap, and Google Maps.
Mais Fácil Contabilidade
https://maisfacilcontabil.com.br
2020
Concept, develop and maintain an online brokerage platform. I worked with Java11, Spring Boot, Hibernate/JPA, PostgreSQL, Angular10, HTML, CSS, TypeScript, and PO UI.
2020
Concept, develop and maintain a platform for product indication and commissioning. I worked with Java11, Spring Boot, Hibernate/JPA, PostgreSQL, Angular10, HTML, CSS, TypeScript, PO UI, React, Bootstrap, and NextJS.
Linharia
https://linharia.com.br
2020
Concept, develop and maintain a women's fashion ecommerce. I worked with Wordpress, WooCommerce, PHP, MySQL, HTML, CSS, and JavaScript.
Santos & Pinheiro
https://santosepinheiro.com.br
2020
Concept and develop a landing page for a lawyer. I worked with HTML, CSS, JavaScript, React, and Gatsby.
2020
Concept and develop a landing page for a light company. I worked with HTML, CSS, JavaScript, React, and Gatsby.
TecSolar
https://tecsolar.eng.br
2020
Concept and develop a landing page for a solar energy company. I worked with HTML, CSS, JavaScript, React, and Gatsby.
3R Eventos
https://eventos3r.com.br
2020
Concept and develop a landing page for a events (parties) company. I worked with HTML, CSS, JavaScript, React, and Gatsby.
3R Agência
https://agencia3r.com.br
2020
Concept and develop a landing page for a digital transformation agency. I worked with HTML, CSS, JavaScript, React, and Gatsby.
BrasilHig
https://brasilhig.com.br
2020
Concept and develop a landing page for a car wash company. I worked with HTML, CSS, JavaScript, React, and Gatsby.
2020
Concept, develop and maintain an app for managing digital people documents. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Angular8, HTML, CSS, TypeScript, Angular Material, and Flutter.
PeneirasFC
https://peneirasfc.com.br
2019
Concept, develop and maintain a platform for online selection process of soccer players for the FC Corinthians Paulista. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Angular8, HTML, CSS, TypeScript, and Angular Material.
MeuGuiaCarro
https://meuguiacarro.app
2019
Concept, develop and maintain an app to request winch and other services for the car. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Angular8, HTML, CSS, TypeScript, Angular Material, Ionic, and Real-time geographic location.
SelectGás
https://selectgas.com.br
2019
Concept, develop and maintain an app to order cooking gas. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Angular8, HTML, CSS, TypeScript, Angular Material, Ionic, Real-time geographic location, and Cielo integration.Multiple Store Management - AC Soluções
https://acsolucoes.com.br
2019
Concept, develop and maintain a platform for managing multiple cooking gas stores. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Angular7, HTML, CSS, TypeScript, and Angular Material.Alugadinha
2018
Concept, develop and maintain an online house and apartments catalog. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Thymeleaf, HTML, CSS, JavaScript, jQuery, and Bootstrap.EasyProtect
2018
Concept, develop and maintain a platform and app for low cost car insurance management. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Thymeleaf, HTML, CSS, JavaScript, jQuery, Bootstrap, and Ionic.FlixImóveis
2018
Concept, develop and maintain an online house and apartments catalog. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Thymeleaf, HTML, CSS, JavaScript, jQuery, and Bootstrap.Gamelive
2018
Concept, develop and maintain a platform for betting on soccer matches and on single lowest betting games. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Thymeleaf, HTML, CSS, JavaScript, jQuery, and Bootstrap.2017
Concept, develop and maintain a building management platform that shows information about the progress of works to customers. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Thymeleaf, HTML, CSS, JavaScript, jQuery, and Bootstrap.Itallian Rio Preto
https://itallian.riopreto.br
2016 - 2017
Concept, develop and maintain a platform for managing a semi-jewelry company. I worked with Java8, Spring Boot, Hibernate/JPA, PostgreSQL, Thymeleaf, HTML, CSS, JavaScript, jQuery, MaterializeCSS, PagSeguro integration, and NFe integration.RD SemiJoias
https://rdsemijoias.com.br
2017
Concept, develop and maintain a platform for managing a semi-jewelry company. I worked with Java8, Spring MVC, Hibernate/JPA, PostgreSQL, JSP, HTML, CSS, JavaScript, jQuery, and Bootstrap.SRU - Sistema do Restaurante Universitário
https://sru.ibilce.unesp.br
2016
Concept, develop and maintain a platform for managing the Unesp's University Restaurant and for booking and selling meal tickets. I worked with Java8, Spring MVC, Hibernate/JPA, PostgreSQL, JSP, HTML, CSS, JavaScript, jQuery, and Bootstrap.PLATCOL
2016
Concept, develop and maintain an online platform of collocations dictionary. I worked with Java7, Spring MVC, Spring Internationalization, Hibernate/JPA, PostgreSQL, JSP, HTML, CSS, JavaScript, jQuery, and Bootstrap.Portal GBD
https://www.grupogbd.com
2016
Concept, develop and maintain a platform to show information about Database Group. I worked with Java7, Spring MVC, Hibernate/JPA, PostgreSQL, JSP, HTML, CSS, JavaScript, jQuery, and Bootstrap.Portal GBD Lattes
2015
Concept, develop and maintain a platform to show information of Unesp's scientific production, which are collected from the Lattes Platform with some enhancements when compared to Portal PROPe. I worked with Java7, Spring MVC, Hibernate/JPA, PostgreSQL, JSP, HTML, CSS, JavaScript, jQuery, and Bootstrap.Portal PROPe
2015 - 2017
Develop and maintain a platform to show information of Unesp's scientific production, which are collected from the Lattes Platform . I worked with Java7, Spring MVC, Hibernate/JPA, PostgreSQL, JSP, HTML, CSS, JavaScript, jQuery, and Bootstrap.Online English Collocations Workbook
2015
Develop and maintain a platform to learn English collocations by playing games. I worked with Java7, Spring MVC, Hibernate/JPA, PostgreSQL, JSP, HTML, CSS, JavaScript, jQuery, and Bootstrap.Proceedings
2014
Concept and develop a website for presenting the proceedings of the congress "III Congresso Nacional de Formação de Professores (CNFP) e XIII Congresso Estadual Paulista sobre Formação de Educadores (CEPFE)". I worked with Java7, Spring MVC, Hibernate/JPA, PostgreSQL, JSP, HTML, CSS, JavaScript, jQuery, and Bootstrap.2014
Develop and maintain a Scientific Events Management System. I worked with Java7, PostgreSQL, HTML, CSS, JavaScript, and jQuery.SoftGym
2012
Gym management software developed. I worked with Visual Basic and MySql.