Summary

Software Engineer with 16+ years of experience designing and developing robust web applications and APIs. I’m an expert in Ruby on Rails and Python with extensive knowledge of back-end and front-end technologies. I have a proven track record of delivering high-quality, scalable solutions across diverse business domains. I’ve worked with teams in various organizations, from startups to enterprise environments. I’m committed to engineering excellence, clean code practices, and continuous improvement.

Tech skills

Programming languages: Ruby, Python, JavaScript/Node.js, Go, HTML, CSS.
Databases: PostgreSQL, TimescaleDB, SQL.
Frameworks and libraries: Ruby on Rails, FastAPI, Pandas, Polars, React, RSpec, pytest, Jest, Vitest.
Cloud and DevOps: AWS (EC2, ECS, RDS, Lambda, SQS, CloudFormation), Docker, Kubernetes (EKS), Git, CI/CD.
Methodologies: Agile (Scrum, Kanban), TDD/BDD, DevOps.

Experience

Skie.io offers cloud cost optimization services (FinOps).

• Designed and developed the core REST API using Ruby, Grape, and PostgreSQL, which is capable of ingesting large amounts of data from cloud providers such as AWS and Azure.
• Developed an ETL workflow in Python to process costs and metrics from multiple AWS and Azure services, including Cost Explorer, EC2, RDS, CloudWatch, and Azure Cost Management.
• Developed the customer dashboard using Ruby on Rails and React, where users can sign up and view metrics and charts that showcase cost optimization opportunities in their AWS or Azure accounts.

Skills: Ruby, Ruby on Rails, Python, JavaScript, Docker, PostgreSQL, AWS, SQL, Pandas, Jupyter Notebook, FastAPI, CI/CD, Kanban.

Navisite is a cloud services provider and IT consulting company. I was part of the team responsible for the multi-cloud provisioning platform.

• Designed and implemented new features in the customer dashboard, admin panel, and the REST API using Ruby on Rails, Sidekiq, and PostgreSQL.
• Implemented and refactored features in the front-end using JavaScript with React.
• Designed a new snapshot/backup system with support for multiple cloud providers, including AWS (EC2, RDS), Oracle, and Azure. This system has proven to be very reliable, more efficient, and has helped the company recover data in multiple situations.
• Developed integrations with third-party cloud APIs and SDKs, such as AWS (EC2, RDS, Lambda), Oracle Cloud, and Azure. These integrations are utilized in cloud automation and have helped the company reduce manual efforts and costs.
• Developed a command-line interface (CLI) for the REST API using Go.
• Designed a new serverless architecture for the provisioning platform using Python, AWS Lambda, AWS SQS, and Docker.

Skills: Ruby, Ruby on Rails, Python, JavaScript, React, Docker, PostgreSQL, AWS Lambda, AWS EC2, AWS SQS, REST, TDD, CI/CD, Kanban.

Acesso was a fintech specialized in payment solutions. I was part of the team responsible for core services.

• Developed a new embossing system for prepaid credit cards using a microservices architecture. It was written in Clojure and used RabbitMQ for message exchange.
• Developed integrations with third-party APIs and services to automatically issue credit card numbers, add customer details, order credit cards from the provider, and ensure their delivery to customers.
• Implemented a complete CI/CD pipeline using Docker for the microservices.
• Implemented mock APIs to simulate third-party integrations. These mocks were used to automate tests and improve code quality.

Skills: Clojure, PostgreSQL, Docker, RabbitMQ, Ruby, CI/CD, TDD, Agile.

Locaweb offers a range of services, including web hosting, cloud computing, and SaaS applications, among other enterprise solutions. I was part of the SaaS division, specifically assigned to the Email Marketing team.

• Refactored a large Ruby on Rails application that handled millions of requests per day and was used by hundreds of customers. I worked on migrating the core database from MongoDB to PostgreSQL, which resulted in reduced infrastructure costs, resolved scalability issues, and simplified system administration.
• Developed a Ruby migration tool to reliably transfer customer data from the legacy MongoDB application to the new PostgreSQL-based application with minimal or no downtime.
• Designed and implemented a multitenant solution for Rails with database sharding to provide customers with a faster and more secure experience, allow the database to scale as needed, and simplify its maintenance.
• Developed new features for the application and the public REST API using Ruby, Ruby on Rails, Sidekiq, and PostgreSQL in the back-end, and JavaScript, HTML, and CSS in the front-end. RSpec and Capybara were utilized for testing.

I was also assigned to work with the SMTP team, responsible for the transactional email service. Some of my contributions included:

• Developed new features in the Python back-end and in the customer-facing Ruby on Rails application.
• Created a new email tracker using Python.
• Implemented a new analyzer for bounced emails.
• Developed new anti-abuse and anti-spam algorithms in the back-end.

Skills: Ruby, Ruby on Rails, Python, PostgreSQL, MongoDB, CSS, HTML, JavaScript, REST, TDD, CI/CD, Agile.

Concrete Solutions was a tech consulting company that provided software development and cloud consulting services. I was part of the team responsible for developing a payment gateway for the Brazilian e-commerce market.

• Developed the customer-facing website, a public REST API, and a back-office application for administrative tasks. The tech stack included Ruby, Ruby on Rails, and MySQL in the back-end, along with JavaScript and jQuery in the front-end. RSpec was used for automated testing.
• Integrated with third-party APIs to process payments, reconcile transactions, and implement support for anti-fraud analysis.

After that project ended, I was assigned to work on-site at Locaweb, one of Concrete Solutions' customers. Some of my responsibilities included:

• Maintaining and developing new features for Ruby on Rails applications, which included MySQL or PostgreSQL databases, utilizing Resque or Sidekiq for background processing. RSpec was used for automated tests.
• Recovering a legacy platform offered by Locaweb for freelancers and digital agencies to promote their services. I addressed bugs, security issues, upgraded dependencies, and added tests with RSpec. This effort facilitated the addition of new features to the platform.

Skills: Ruby, Ruby on Rails, JavaScript, CSS, HTML, MySQL, PostgreSQL, CI/CD, TDD, Agile, Scrum.

Astrus Digital is a digital agency that offers web development, e-commerce, and digital marketing services.

• Developed websites for Astrus customers using HTML, CSS, and JavaScript in the front-end, and PHP and MySQL in the back-end.
• Developed new features for in-house projects, such as the content management system (CMS) and the e-commerce platform, using PHP and MySQL.
• Built a new platform for local e-commerce using Ruby, Ruby on Rails, and MySQL.
• Developed a proof of concept based on WordPress to reduce costs and the effort required to maintain an in-house CMS.
• Implemented new integrations with third-party payment systems in the e-commerce platform.

Skills: Ruby, Ruby on Rails, MySQL, JavaScript, CSS, HTML, PHP, WordPress.

diHITT was a Brazilian social news website where users could submit links to articles, discuss them, and vote on these submissions.

• Developed new features in the back-end using Ruby, Ruby on Rails, and MySQL.
• Developed new features in the front-end using HTML, CSS, and JavaScript.
• Refactored the back-end to address scalability issues, reduce infrastructure costs, and improve response times.
• Implemented new algorithms and enhancements for existing features, such as voting, messaging, and sharing tools.

Skills: Ruby, Ruby on Rails, MySQL, JavaScript, CSS, HTML.

Education

Bachelor’s Degree in Computer Engineering

Anhembi Morumbi University (UAM). 2012 - 2017. São Paulo, SP, Brazil.