Marcos R.
Back-end and Systems Engineer

Skills

Ruby On Rails

Mongodb

Postgresql

Amazon Aws

Flutter

Sqlite

Node.js

Javascript

Python

Java

Marcos is available for hire

Hire Marcos R.

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Bio

Experienced Software Engineer with a demonstrated history in the information technology and services industry. Proficient in Ruby, Rails, C#, .NET Core, Java, Dart, Android, Flutter, Hibernate, LINQ, PostgreSQL, and MySQL. Holds a Bachelor's Degree in Information Systems from UEG - Universidade Estadual de Goiás Unidade de Santa Helena de Goiás.

Software Engineer | Ruby - Rails
11/1/2021 - 1/1/2024

Contributed to the development of an API for a new investor platform, enhancing business logic, performance, reliability, and overall codebase quality. Played a critical role in integrating compliance and risk analysis tools such as Caf and BigBoost KYC, which streamlined these processes significantly. Implemented numerous integrations using AWS Lambda, leading to substantial reductions in server costs. Mentored new developers in understanding product context and adhering to code best practices, thereby fostering team growth and skill development. Developed expertise in Ruby, Rails, Ruby on Rails, Full-Stack Development, and worked extensively with PostgreSQL, MongoDB, and Redis. Specialized in API Development/Integration, GraphQL, Continuous Integration/Deployment (CI/CD), and utilized tools like RSpec, Sidekiq, AWS Lambda, and Metabase for various project needs.
Mobile Software Engineer | Flutter
6/1/2021 - 11/1/2021

Collaborated with the municipality of Trindade–GO during the isolation and COVID-19 vaccination campaigns to develop two pivotal applications. The first application streamlined community access to vaccination dates, locations, and scheduling, significantly enhancing the efficiency of the municipality's efforts in the vaccination campaigns. The second application enabled participants of the traditional Festa do Divino Pai Eterno to engage in the pilgrimage remotely, adhering to social distancing guidelines. Developed key proficiency in Flutter and Dart for application development, utilized SQLite for database management, and implemented RESTful APIs to ensure robust and seamless data communication.
Software Engineer | Groovy - Grails
12/1/2019 - 6/1/2021

Gained extensive experience in integrating various external APIs for the inclusion of partners into the credit engine. Maintained and managed an internal application dedicated to handling credit requests from multiple business partners. Implemented and enhanced automated processes to ensure seamless operations. Developed proficiency in Groovy, Grails, Ruby, Rails, and Ruby on Rails, as well as Python and Node.js. Worked with PostgreSQL for database management and developed RESTful APIs. Utilized Firebase and Google Cloud Platform (GCP) for cloud services and application deployment.
Backend Developer | C# - .NET Core
12/1/2018 - 11/1/2019

Led the construction of a monolithic API for e-commerce and physical store systems. This project involved the integration of intelligent RFID tags for efficient inventory management and the incorporation of various payment solutions and CRM systems. Developed technical proficiency in C# and .NET Core, utilizing LINQ for streamlined data queries and management. Extensively worked with SQL Server for database solutions, and leveraged Azure DevOps for continuous integration and deployment. Specialized in API development and integration to enhance overall system functionality and reliability.
Backend Developer | C#
8/1/2017 - 7/1/2018

Developed and maintained functionality for a private API utilized by mobile and front-end teams for both internal and external products. Gained proficiency in C#, SQL Server, ASP.NET Web API, and REST API.
Backend Developer | Ruby - Rails - Java
7/1/2016 - 7/1/2017

Developed proficiency in creating JSON APIs using Rails for various projects, demonstrating strong capabilities in back-end development. Played a significant role in the creation of an MVP for PDF document signing using Java, contributing to a product that is now publicly available. Gained expertise in key technologies, including Ruby, Rails, Ruby on Rails, Java, and PostgreSQL. Worked extensively with the Ionic Framework, showcasing versatility in using different frameworks and tools to address diverse project requirements.
Software Developer | Java - Android
4/1/2015 - 6/1/2016

Led the creation of a new Android application for external sales, successfully replacing an outsourced contract. Developed an API to synchronize data between mobile devices and the central database, ensuring seamless data integration. Integrated an embedded payment solution, which was recognized as a success case at a notable seminar. Maintained and enhanced functionalities for the internal sales application. Developed technical expertise in Java, Android, IBM Db2, and SQLite.