Alex S.

Full-stack Product Engineer

Back-end Developer
1/1/2016 - 8/1/2016

Developed and provided support for systems using PHP language, including tasks related to website and web systems maintenance utilizing HTML, HTML5, CSS, CSS3, JavaScript, and PHP. Conducted maintenance and creation of databases leveraging MySQL. Created websites using CMS WordPress and virtual stores on the Prestashop platform, alongside projects developed with the CodeIgniter framework.

Backend Developer
5/1/2022 - Present

Developed REST and GraphQL APIs using Node.js and NestJS, contributing to robust and scalable web systems. Proficient in a wide range of technologies including HTML5, CSS3, JavaScript, React.js, GraphQL, REST API, and Jest. Focused on implementing Clean Code principles and Test-Driven Development (TDD). Gained valuable experience working with Ruby on Rails and GRPC to enhance backend functionality. Demonstrated a strong capability in creating efficient and maintainable code through best practices and modern web development frameworks.

Backend Developer
3/1/2022 - 6/1/2022

Developed proficiency in creating RESTful APIs using Node.js and MongoDB. Contributed to system migration projects, ensuring seamless transitions and minimal downtime. Engaged in maintenance and development of various web systems, utilizing a tech stack that included HTML5, CSS3, JavaScript, Node.js, NestJS, GraphQL, PostgreSQL, SQL Server, and MongoDB.

FrontEnd Developer
11/1/2021 - 8/1/2022

Developed REST APIs and GraphQL solutions with Node.js, Next.js, and React.js. Engaged in comprehensive web systems development utilizing HTML5, CSS3, and JavaScript. Applied technologies including GraphQL, REST APIs, and prevalent frameworks such as Node.js, Next.js, and React.js. Employed testing methodologies and tools like Jest, Clean Code principles, and Test-Driven Development (TDD). Integrated and analyzed web performance and user data using Google Analytics, Amplitude, and Open Telemetry.

Backend Programmer / Tech Lead
9/1/2021 - 8/1/2022

Developed REST API using Node.js and MongoDB, and created front-end interfaces with React.js and React Native for mobile applications. Participated in system migration projects, ensuring seamless transitions and minimal downtime. Undertook maintenance and development tasks for web systems, leveraging technologies such as HTML5, CSS3, and JavaScript. Demonstrated expertise in using Node.js, NestJS, and GraphQL for backend development, and proficiently managed Oracle, PostgreSQL, and SQL Server databases for data storage and retrieval.

Programmer
10/2/2020 - 11/1/2021

Developed REST API using Node.js and MongoDB, complemented by front-end development with React.js and React Native for the app. Created and maintained WEBHOOKs for efficient data consumption. Conducted system migrations and provided continuous support for systems built in PHP. Executed maintenance and development of web systems utilizing HTML5, CSS3, PHP, Python, and JavaScript. Demonstrated proficiency with databases including Oracle, PostgreSQL, and SQL Server.

Programmer
8/2/2019 - 9/2/2020

Developed advanced proficiency in PHP, Doctrine, and Silex, focusing on creating robust backend solutions. Extensive work conducted on Ext JS 4.2, NodeJS, and Vue.js, leading to the development of dynamic and highly responsive front-end applications. Demonstrated strong skills in database management with PostgreSQL and MongoDB, ensuring data integrity and optimizing performance. Collaborative code maintenance and version control were ensured using SVN and Git, fostering a streamlined development process and effective teamwork.

Programmer
1/2/2017 - 7/2/2019

Gained deep expertise in Java development, focusing on microservices architecture utilizing Spring Boot. Developed and maintained RESTful APIs, ensuring robust and secure code through the implementation of OAuth2 and JWT for authentication and authorization. Proficiently handled database management using MySQL and MongoDB, optimizing queries and performing routine database maintenance. Employed Docker for containerization and Kubernetes for orchestrating services, achieving seamless deployment across multiple environments. Demonstrated expertise in React.js, building dynamic and responsive user interfaces, while integrating Redux for state management. Regularly employed continuous integration and continuous deployment (CI/CD) pipelines using Jenkins and GitLab CI, ensuring high code quality and swift deployment cycles. Utilized JUnit and Mockito for unit testing, achieving high test coverage and reliability. Actively participated in Agile methodology, attending daily stand-ups, sprint planning, and retrospectives to iteratively improve the development process. Implemented code versioning and collaborative development using Git and Bitbucket.

Back-end Developer
7/1/2016 - 12/1/2016

Developed and supported systems using C#. Demonstrated extensive skills in the maintenance and development of web systems utilizing HTML, HTML5, CSS, CSS3, JavaScript, AngularJS/2, and TypeScript. Exhibited proficiency in server-side development with Node.js. Provided robust maintenance and creation of databases using SQL Server.

Web Developer
1/1/2013 - 12/1/2015

Developed proficiency in computer maintenance and user support. Demonstrated expertise in mobile app development using Android-Java. Conducted extensive web system development utilizing PHP, MySQL, and JavaScript. Showcased abilities in website construction with HTML5, JavaScript, and CSS3. Specialized in the installation, configuration, development, and customization of the Moodle Virtual Learning Environment. Executed installation, configuration, and customization of the Redmine project management software. Provided reliable support and maintenance for servers based on the Linux Operating System.

Analysis and Development of Systems at Uniasselvi
2020 - 2023

Computer Technician at IFSC
2010 - 2012