Lucas R.

Back-end and Systems Engineer

Developer Analyst
3/1/2022 - Present

Gained extensive experience in the financial sector by integrating payment gateways and supporting back-office financial operations. Conducted detailed analysis to implement new features and created thorough task descriptions, leveraging agile methodologies to enhance workflow. Developed new features and focused on the maintenance and improvement of legacy systems. Specialized in the integration of payment gateways using microservices architecture, and ensured code reliability through rigorous unit testing. Proficiently utilized a variety of technologies including GIT for version control, Docker for containerization, PHP with Code Igniter for backend development, and Python and NodeJS for scripting and server-side logic. Employed VueJS for front-end development and managed data using MySQL. Leveraged Amazon SQS for messaging, automated build and deployment processes with Jenkins, monitored system performance using Grafana, and tracked bugs and issues with Bugsnag.

Back End Developer
1/1/2020 - 3/1/2022

Demonstrated expertise in developing new functionalities and refactoring legacy code to a more efficient structure. Engaged in the creation of APIs and employed automated tests to ensure code reliability. Focused on the creation and refactoring of reports to enhance data accessibility and accuracy. Gained proficiency in using technologies such as GIT and Docker for version control and containerization, respectively. Developed extensive knowledge of PHP and the Laravel framework, along with experience using PHPunit for testing. Utilized Javascript for front-end development and managed databases with MySQL and MongoDB.

Full Stack Developer
1/1/2019 - 8/1/2021

Maintained the company's product, focusing on improvements to enhance availability for processing large volumes of data. Integrated with third-party APIs such as Zapier, Pluga, and Pagar.me, and developed solutions utilizing REST APIs. Acquired technical expertise in GIT, Docker, PHP, CodeIgniter, jQuery, MySQL, and MongoDB.

Programmer
1/1/2019 - 12/31/2020

Cultivated expertise in the development of new systems tailored for both server and citizen use. Engaged in the maintenance and enhancement of existing systems. Utilized a strong technical skill set, including proficiency in various frameworks and tools. Fostered a collaborative environment for code maintenance and iterative improvements.

Programmer
1/1/2018 - 12/31/2019

Developed new systems for deployment by server administrators and end-users. Maintained and enhanced existing systems to improve functionality and efficiency. Acquired proficiency in PHP and Doctrine, alongside extensive work on Ext JS 4.2 and NodeJS. Demonstrated advanced skills in database management with PostgreSQL and MongoDB. Ensured collaborative and efficient code maintenance utilizing SVN and Git. Enhanced problem-solving and debugging capabilities in a dynamic development environment. Utilized industry-standard frameworks and tools to streamline development processes and ensure system reliability and performance.

Full Stack Developer
1/1/2017 - 12/31/2018

Developed and maintained the company's product, implementing enhancements to significantly improve availability for handling large volumes of data. Integrated seamlessly with third-party APIs including Zapier, Pluga, and Pagar.me, leveraging solutions with REST API for efficient data exchange. Utilized a robust technology stack comprising GIT for version control, PHP with the CodeIgniter framework for backend development, jQuery for frontend interaction, and MySQL for database management.

Full Stack Developer
1/1/2016 - 12/31/2017

Maintained and developed new features for the product, focusing on the integration of invoice and tax document issuance. Utilized web services, webhooks, and third-party APIs for seamless integration. Conducted thorough documentation and time tracking of all developed activities. Provided direct customer service and support, ensuring client satisfaction. Proficient in technologies and tools including GIT, PHP, Kohana Framework, CSS, Bootstrap, Materialize CSS, JavaScript, jQuery, MySQL, and the Scrum framework for agile project management.

Full Stack Developer
1/1/2015 - 12/31/2016

Handled maintenance and developed new features for various products including institutional websites, E-commerce platforms, E-Learning platforms, and management systems. Gained expertise in data modeling, documentation, web service creation, and integration with third-party APIs. Led efforts in remodeling outdated layouts to responsive versions and provided consistent support services. Maintained meticulous documentation and time logging of all activities. Utilized technologies such as PHP, MVC, CSS, Bootstrap, Javascript, jQuery, Magento, Opencart, and Wordpress. Integrated payment solutions with Pagseguro API, Paypal API, and leveraged Google APIs for enhanced functionality. Managed databases using MySQL and PostgreSQL.

Junior Programmer Analyst
1/1/2014 - 12/31/2015

Developed and maintained new features for the internal system managing call center calls using Delphi. Enhanced technical proficiency in Delphi through extensive hands-on experience. Contributed to improving call handling efficiency and system reliability by implementing and refining system capabilities.

Junior Programmer II
1/1/2013 - 12/31/2013

Developed comprehensive systems documentation to ensure clarity and consistency in software lifecycle processes. Acquired deep technical expertise in PHP, Doctrine, and Silex, enhancing backend development capabilities. Contributed to front-end projects utilizing Ext JS 4.2, NodeJS, and Vue.js, thereby expanding proficiency in modern JavaScript frameworks. Demonstrated proficiency in managing and optimizing databases with PostgreSQL and MongoDB. Played a crucial role in collaborative code maintenance, employing version control systems such as SVN and Git effectively.

Junior Programmer II
1/1/2013 - 12/31/2013

Developed customizations for SAP systems tailored to client requirements. Utilized technologies such as SAP, C#, and SQL Server to implement solutions. Enhanced system functionalities by integrating and customizing modules within the SAP environment. Managed databases effectively using SQL Server, ensuring seamless backend support for the customized applications. Demonstrated technical expertise in C# for developing additional features and automations, significantly improving system efficiency and user experience.

Junior Developer
1/1/2011 - 12/31/2013

Developed and maintained an inventory system for computer data collection, ensuring the seamless integration of newly added features. Enhanced technical expertise in Java, Spring Boot, and Hibernate for backend development. Utilized Angular and React for frontend development, creating responsive and user-friendly interfaces. Gained extensive experience with MySQL and PostgreSQL for database management. Implemented code versioning and collaboration techniques using Git and GitHub. Applied Agile methodologies to manage project timelines and workflows, emphasizing continuous improvement and iterative progress. Debugged and optimized system performance, identifying and rectifying bottlenecks and errors to maintain smooth operations. Conducted thorough testing using JUnit and Selenium to ensure reliability and functionality of new and existing features.

Programmer
1/1/2010 - 12/31/2011

Engaged in the development and maintenance of a banking intranet system for a major financial institution. Acquired extensive experience in leveraging PHP and Silex for backend development, ensuring robust and scalable solutions. Demonstrated proficiency in frontend development using Ext JS 4.2 and Vuetify, enhancing the user interface and user experience. Utilized NodeJS for implementing server-side logic and real-time functionalities. Worked with PostgreSQL and MongoDB, ensuring efficient data management and storage. Maintained collaborative code development and version control using SVN and Git, contributing effectively to team-driven projects and tasks.

Analysis and Development of Systems at Integrated Colleges of Bauru
2014 - 2016