Willian R.

Back-end and Systems Engineer

Senior Programmer
9/1/2022 - 7/1/2023

Tasked with developing new functionalities and conducting maintenance for Windows Forms .NET systems, gaining substantial expertise in .NET Core Microservices systems. Engaged in version control and collaborative projects using Git, while handling message brokering with RabbitMQ and containerization with Docker. Utilized Jira for effective project management and issue tracking, alongside proficiency in Oracle Database for data management and operations.

Systems Analyst
5/1/2019 - 9/1/2022

Developed proficiency in C# web development with a strong focus on creating and maintaining robust web applications. Gained extensive experience working with Oracle databases, including database design, optimization, and complex query creation. Demonstrated expertise in maintaining and modernizing legacy systems to ensure compatibility with current technologies and improve overall system performance. Utilized various tools and frameworks to enhance productivity and deliver high-quality solutions efficiently.

Junior Developer
6/1/2018 - 5/1/2019

Acquired extensive experience in Java web development, utilizing Spring Framework for building robust and scalable applications. Developed proficiency in Hibernate for efficient database management and ORM. Demonstrated skills in web technologies including HTML5, CSS3, and JavaScript to create interactive and user-friendly interfaces. Leveraged tools such as Maven for project management and build automation, and utilized Jenkins for continuous integration and continuous delivery (CI/CD). Enhanced backend functionality with RESTful web services and implemented security features using OAuth2 and JWT. Maintained code quality and version control using Git, collaborated in agile environments, and applied unit testing frameworks like JUnit and Mockito to ensure code reliability and performance.

Developer
7/1/2017 - 12/1/2017

Gained extensive experience in Java development, consistently delivering high-quality, scalable applications. Mastered various Java frameworks including Spring, Hibernate, and Struts, ensuring efficient and maintainable code. Leveraged tools such as Maven and Gradle for robust build automation, enhancing continuous integration and continuous deployment (CI/CD) pipelines. Developed advanced skills in database management using Oracle, MySQL, and PostgreSQL, optimizing SQL queries for better performance. Utilized version control systems like Git and SVN for collaborative development and code integrity. Engaged in the full software development lifecycle, from requirements gathering and design to implementation, testing, and deployment. Improved application performance through profiling and optimization techniques, using tools such as JProfiler and VisualVM. Applied knowledge of RESTful and SOAP web services to design and integrate APIs, enabling seamless interoperability between systems. Familiarity with front-end technologies such as Angular and React to deliver comprehensive end-to-end solutions.

Developer
4/1/2017 - 7/1/2017

Gained extensive expertise in Python and Django, tailoring and optimizing applications to ensure high performance and scalability. Mastered working with PostgreSQL, executing intricate queries and managing database performance tuning. Acquired proficiency in MongoDB, implementing NoSQL database solutions for unstructured data storage. Engaged in full lifecycle application development, from analysis and design to implementation and maintenance, ensuring robust, high-quality code.

Computer Science at Barão de Mauá University Center
2013 - 2017