Gabriel Camargo

Munich-based agency

• Raised the mobile Lighthouse performance score of a React sales funnel from 55 to 80 by auditing render behavior and eliminating redundant state, unnecessary useEffect hooks, and blocking operations on initial load.
• Built a React Native trading card collection app on Supabase (Postgres catalog, Auth, Edge Functions) covering 7 card games, 1,742 sets and 220,000+ card variants, integrating the Ximilar computer vision API for card identification and modeling variant identity as a deterministic composite key (game, set, collector number, finish), with the matching printing confirmed by the user at scan time.
• Instrumented a React sales funnel and mobile apps with PostHog, tracking product events and frontend errors to monitor user behavior and surface production failures.
• Built automated end-to-end tests for a sales funnel with Playwright, covering the full path from onboarding to checkout, and integrated them with LambdaTest Real Device automation to run on physical iOS devices.
• Developed reusable components in a Storyblok headless CMS using Vue.js and Tailwind CSS.
• Integrated Stripe into a web sales funnel, enabling PayPal payments and configuring Stripe Managed Payments to simplify global tax compliance and international payment processing.

Democratizing access to financial information and investment tools

• Built a mutual fund screener in Next.js letting users filter and compare over 30,000 funds across dozens of criteria, architecting the shared filter state with Zustand and optimizing render performance for large result sets.
• Built accessible interface components in Next.js, pairing Material UI primitives with semantic HTML and explicit ARIA roles and labels, following WCAG guidance for custom interactive elements.
• Architected and developed a financial news portal using Next.js Static Site Generation to optimize content delivery and ensure fast page loads at scale.
• Built a unified asset search component in Next.js, consolidating multiple financial asset types into a single search experience, leveraging SWR for client-side data fetching and caching.
• Designed and implemented a production-grade checkout and subscription system in Next.js, integrating Pagar.me for secure payment processing and recurring billing flows.
• Monitored API errors in production with Sentry, using captured stack traces and request context to triage failures and prioritize fixes.

Data-driven solutions for the energy sector

• Developed a React Native mobile training application for sugarcane mill employees, together with a web dashboard for tracking employee progress.
• Built a JavaScript-based weather map animation player, allowing users to navigate through time-series image sequences and facilitating weather condition analysis.
• Developed and maintained web tools for the NIMBUS platform using Django on the backend and HTML, jQuery, and Bootstrap on the frontend.
• Worked on the development of tools for analyzing and visualizing energy market data, focusing on price information and weather and hydrological conditions.