Hyalen – Next.js, React, Typescript

A comprehensive B2B property management platform that empowers hotel partners to streamline their operational workflows and maintain strict data accuracy. The portal features robust tools for revenue growth, allowing partners to execute targeted marketing campaigns for top-of-search visibility and seamlessly manage complex group booking proposals.

• Led the adoption of a robust Testing Pyramid strategy (unit, integration, e2e, and visual regression tests), which increased the testing coverage substantially and decreased the number of defects/regressions in production;
• Developed a complex event-driven architecture using AWS Lambda, SQS, and SNS to integrate travel workflows with internal and external systems;
• Drove data-backed UX improvements by utilizing LogRocket for front-end session analysis, establishing regular "walk the store" reviews/meetings to identify user pain points and optimize the platform's interface;
• Architected and built full-stack features to scale a partner platform serving over 500,000 monthly interactions;
• Developed end-to-end platform observability by leveraging Datadog to monitor backend health, analyze distributed traces, and resolve P99 latency spikes.

A group travel booking platform catering to millions of users, designed to simplify the process of booking and managing accommodations for large groups.

• Architected a complex multi-step Wizard form for group bookings, managing highly dynamic state across several stages (guest lists, rooms, amenities, etc).
• Developed both the web and the mobile app version;
• Developed a real-time communication hub, similar to WhatsApp, featuring a 3-column layout (Channels, Conversations, and Group Events) to facilitate direct messaging between clients and Engine's support team;
• Implemented unit, integration, and e2e tests.

The main website and static landing page ecosystem for a prominent Brazilian fintech and digital investment brokerage (recently acquired by Santander Group).

• Created a static web application using React, Gatsby, and GraphQL to serve high-performance landing pages for the company's main website.
• Developed a custom CSS library that delivers utility classes according to the company's strict design system specifications using Tailwind.

An integrated e-commerce marketplace within a central digital bank's ecosystem, allowing millions of users to shop for retail goods directly through the bank's platform, and earn direct cashback into their checking accounts. Main products and offerings include:

• digital goods, like gift cards for gaming and food delivery;
• travel & experiences: flight tickets and travel packages;
• retail goods & electronics: smartphones, TVs, and computers.

• Spearheaded the development of the entire marketplace and delivered the MVP in just 2 weeks;
• Provided maintenance and built new UI functionalities within the system;
• Developed unit and integration tests focused on the user's behavior.