Jeferson A.

Full-stack Product Engineer

Fullstack
12/1/2022 - Present

Developed a microservices system utilizing APIs in Java (Spring Boot) paired with a front-end implemented in Angular. Engineered a robust hosting architecture using AWS to ensure scalable and reliable application deployment. Conducted thorough problem analysis within the production environment, performed comprehensive log analysis, and implemented enhanced observability to monitor system health. Executed unit tests diligently with a strong emphasis on Test-Driven Development (TDD) and Domain-Driven Design (DDD) principles, ensuring high-quality, maintainable code.

Full Stack Developer
2/1/2021 - 11/1/2022

Analyzed, improved, and created new backend functionalities using various AWS environments including Lambda, EKS, CloudFormation, and CloudWatch, specifically tailored for banking applications. Utilized TDD (Test-driven Development) techniques and adhered to clean architecture principles during development. Conducted extensive log analysis and monitored applications in a Production environment. Enhanced performance of configuration queries and reporting by creating and implementing a cache with Redis.

Tech Lead
2/2/2017 - Present

Developed native mobile systems and applications for both Android and iOS platforms, along with hybrid applications utilizing Ionic versions 1, 2, and 3. Emphasized the use of Scrum as an agile methodology to ensure efficient project management and delivery.

Developer Analyst
1/2/2016 - 2/2/2017

Developed applications using JAVA and PHP, leveraging frameworks such as Symfony and Laravel. Gained extensive experience with front-end development using AngularJS. Worked on Android application development, enhancing skills in mobile app frameworks. Conducted thorough requirements analysis and carried out unit testing to ensure software quality. Utilized Selenium for automated testing, ensuring robust and reliable application performance. Enhanced proficiency in Oracle databases, facilitating efficient data management and retrieval in various projects.

Systems Analyst
7/2/2013 - 12/2/2016

Developed proficiency in PHP for ERP system analysis and development, with a primary focus on People Management. Crafted advanced routines within SQL Server Database and performed thorough analysis and requirements gathering. Demonstrated in-depth knowledge of HR processes including Payroll, Termination, Admission, issuance of Paychecks, SEFIP, and DIRF.

Senior Programmer
7/2/2011 - 7/2/2013

Developed and maintained various systems using PHP and Java. Utilized Oracle, MySQL, and PostgreSQL databases to support data management needs. Developed an embedded telephony system for communication tools such as chat and click-to-dial, integrated with Asterisk. Implemented an SMS sending system for streamlined messaging. Leveraged Google Geolocation for integrating municipal schools with Google search mechanisms, including route creation and other location-based functionalities.

Analysis and Development of Systems at Estácio de Sá University
2017 - 2019

AWS Serverless Applications: Integrating FullStack Applications at Alura
1/1/2022

AWS SQS: Messaging and System Decoupling at Alura
1/1/2022

AWS Serverless Applications: Building a Rest API at Alura
1/1/2022

AWS Lambda at Alura
1/1/2022