Firstleaf Ruby on Rails API

• Worked in the Core Platform Team, focusing on performance and architectural improvements, particularly in relation to Solidus, Stripe, and other integrations
• Implemented the integration with the Extole referrals platform, establishing a new system for user referrals
• Led the multi-step migration from Ambassador referrals to Extole
• Implemented the integration with the Delighted surveys platform
• Developed backend APIs to support the new mobile app
• Added new features such as liked wines and shipping date logic, along with many general fixes
• Worked on some frontend tasks (React, Redux, Gatsby) alongside my primary backend responsibilities

Leading tenant coordination tracking software.

• Develop a tool allowing users to create custom reports based on custom forms, linking data from multiple application modules (e.g.: deals, tenants, landlords, projects, contractors, lease and cost data).
• Deliver advanced customization options for dynamic reports, including field types, ordering, orientation, column width, page breaks, fixed columns, and summaries.
• Implement a Filter Builder, enabling users to create and share custom filters with others, with support for complex filtering rules combinations.
• Fix and improve legacy static reports for better reliability and performance
• Enhance scheduled report sets and mailers
• Integrate two-factor authentication using one-time passwords (OTP) to improve security
• Fix all broken specs and ensure full test coverage for all new and updated features

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.

• Design and implement a work order system using a state machine, including a dashboard for administrators to review each step of the order process.
• Develop a new invoicing system enabling contractors to collect client signatures upon job completion.
• Enable per-company customizations of the price builder to meet diverse client needs.
• Introduced RSpec and a testing culture to the team, increasing test coverage from zero to nearly 300 unit and system specs.

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.

• Re-write a considerable part of the Ruby on Rails code to support the new data layer using Node JS microservices
• Introduce several unit and system tests with Rspec to cover the most important flows
• Implement node js micro services for accounts, charges and subscriptions and add specs with Mocha and Chai

Rails API, aggregating and providing marketing data and stats to an Angular app and a WordPress website.

• Refactor: stats processing, report generation and event summary
• Fix several bugs

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

• As the Tech Lead for the Promoted Price team, I led the development and maintenance of a suite of critical applications that played a vital role in the company’s operations.

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.

• I worked as a Java developer, contributing to my team by implementing numerous features over the years.