I'm a software engineer passionate about delivering high-quality user experiences, mentoring, building new products, and improving existing codebases.
Over the past 8+ years, I've specialized in Ruby and Rails, focusing on developing scalable APIs and using best practices like refactoring and TDD.
Currently strengthening my full-stack skills with React and TypeScript.
PrintI'm a software engineer passionate about delivering high-quality user experiences, mentoring, building new products, and improving existing codebases.
Over the past 8+ years, I've specialized in Ruby and Rails, focusing on developing scalable APIs and using best practices like refactoring and TDD.
Currently strengthening my full-stack skills with React and TypeScript.
Software development consultancy specializing in Ruby, Rails, and JavaScript.
After years of full-time work followed by a sabbatical, I've returned in 2024 to freelancing through my company, Cosmos. And now in 2025 I'm open to a new full-time challenge.
Firstleaf is a leading wine company and subscription service that makes it easy to discover new favorite wines.
Working remotely from Brazil, I was part of the following teams throughout my journey at the company:
► Product: developing features and integrations
► Mobile: providing new APIs to support our mobile app
► Platform: improving the core functionalities of the platform
At Firstleaf I also conducted several technical interviews for hiring new backend engineers.
The Firstleaf platform consists of a React frontend and a Ruby on Rails API deployed on AWS. It has also launched a mobile app.
I worked with Rockstar Coders for 3 years, collaborating with several of their clients, while primarily focusing on two of them, where I made significant contributions to their products as described below.
Leading tenant coordination software. The platform manages tenants, deals, costs, materials and provides multiple reports for decision making and tracking.
A SaaS platform offering a comprehensive menu pricing system for contractors in industries such as HVAC, plumbing, and electrical services. Key features include custom pricing, service contracts, payment plans, warranties, and more. The platform is widely adopted across the US.
Software development consultancy specializing in Ruby, Rails and JavaScript. Collaborating remotely with US-based companies on freelance projects through my company, Cosmos.
Exact Payments provides seamless embedded payment solutions, enabling quick merchant onboarding, instant payment method activation, delivering an end-to-end payment processing platform for SaaS businesses.
I started as a Ruby on Rails specialist and later expanded my contributions to include Node.js microservices.
A hosted checkout platform enabling merchants to accept credit card payments.
It consisted on a Merchant App (Vue JS), an Admin App (Rails) and multiple microservices (Node)
The main feature was the multi-merchant functionality, allowing merchants to share the same pinpad while keeping their payments safe and isolated.
SDX is a portal for emerging infrastructure, offering tools for news, articles, webinars, advertising, and data analysis.
Built with WordPress, Ruby on Rails, PostgreSQL, and AngularJS for the admin area.
I worked part-time and focused on enhancing the Rails API, improving test coverage and fixing bugs.
Rails API, aggregating and providing marketing data and stats to an Angular app and a WordPress website.
Initially I worked at the company called Ideais, where our team supported e-commerce portals owned by B2W.
After Ideais was acquired by B2W, I continued working on the same products, transitioning to being directly hired by B2W.
Starting as a mid-level software engineer, I was promoted over the years and contributed to multiple projects within the company, eventually taking on the role of Tech Lead.
I also had the opportunity to mentor numerous developers and serve as an instructor in the trainee program, helping to guide and shape the next generation of software engineers.
Platform consisting on the following subsystems:
► Adm Promo: administrative tools to manage promotions
► Pricing Web: administrative tools to manage pricing
► Promotion Integration: legacy tool to translate a promotion a Drools file to be evaluated by a rule engine
► Promoted Freight: microservice providing freight information
► Promoted Price: a specialized microservice to process promotion rules. An evolution of the promotion architecture.
► Installment Service: microservice providing to the storefront a list of applicable installments for a product or checkout
► Coupon Service: microservice generating and processing coupons with discounts
► Extended Warranty: monolithic application to manage extended warranty rules
This project allowed users to log in to the e-commerce platforms Americanas, Shoptime, and Submarino.
Providing a comprehensive timeline of orders and registration details, along with a self-service area where users could manage various tasks such as canceling purchases, processing product returns, and retrying payments.
In addition to the main project, I contributed to the following subprojects:
► Partner Integration: middleware for supplier integration, consuming multiple SOAP web services.
► Vale Presente Físico: built an application to generate vouchers, seamlessly integrating with Zebra printers.
At my first software company, we built a hotel booking app, a bookstore app, and an educational assessment system. Though I was mostly focused on the hotel app (Logic Hotel).
I introduced version control tools to the team (rare in 2006) and gained valuable experience in object-oriented techniques.
This role also enhanced my skills in customer support and team management.
Universidade Veiga de Almeida-BSc Computer Science,2002 - 2005
