My name is
Guilherme Bermêo.

About.

Experience.

1. Senior Software Engineer

   @FirstDecision
   • Led front‑end development with Next.js 14, React, TypeScript, and MUI, improving UX and dev workflows.

   • Architected data‑fetching and caching layers with TanStack Query to optimize API interactions and performance.

   • Enforced code quality and consistency using ESLint rules, SonarQube scans, and automated CI pipelines.

   • Collaborated with back‑end (Nest.js, OracleDB) and design (Figma) teams to deliver scalable UI components.

   • Novo Promoção (2023–2025): Rebuilt a nationwide legal promotions platform for Brazil's Attorney‑General's Office (AGU), replacing a .NET legacy system. Engineered the UI in Next.js, React, TypeScript, and TanStack Query to handle complex business rules and high loads. Delivered an accessible, performant interface adopted across federal legal departments.
   12.2023 - Present
2. Senior Front-end Developer

   @TTY
   • Developed and maintained React/Next.js 13 applications with TypeScript, MUI, Tailwind CSS, and Cypress end‑to‑end tests.

   • Refactored legacy PHP front‑ends into modular React components, improving maintainability and performance.

   • Containerized services with Docker and deployed via Rancher; integrated Nest.js microservices for data processing.

   • Programa de Gestão e Desempenho (2023–2024): Co‑developed a performance management system for AGU with React, Next.js, TypeScript, and TanStack Query. Delivered features for goal‑setting, progress tracking, and automated feedback; system adoption studied in an FGV PhD thesis.
   04.2023 - 11.2024
3. Front-end Developer & UX Consultant

   @TTY
   • Built interactive components using React, Next.js 13, MUI 5, Tailwind CSS, and React‑Hook‑Form for enterprise applications.

   • Partnered with UX designers to translate wireframes into polished, accessible interfaces.

   • Managed deployments and microservices orchestration with Docker, Rancher, and Azure DevOps.
   09.2022 - 04.2023
4. Front-end Developer

   @AGU
   • Modernized internal legacy systems using HTML5, CSS3 (SASS, Tailwind), JavaScript/TypeScript, and PHP backends.

   • Standardized UI libraries (Bootstrap, Bulma) and introduced React and Vue.js components to enhance user workflows.

   • Ensured cross‑browser compatibility and accessibility compliance (WCAG 2.1).
   01.2022 - 09.2022
5. Senior UX Designer

   @AGU
   • Led SCRUM teams to deliver user‑centered web interfaces for government applications.

   • Produced high‑fidelity prototypes in Figma and Adobe XD; ran usability tests and drove iterative improvements.

   • Collaborated with developers to integrate designs into production, maintaining visual consistency.
   09.2018 - 01.2022
6. Operations Analyst & UX Designer

   @BBTS
   • Designed and prototyped banking interfaces using Axure RP, Figma, and Sketch.

   • Developed front‑end features for the Banco do Brasil mobile app; collaborated with back‑end teams on API integration.

   • Conducted UX research and A/B tests to validate design decisions.
   04.2015 - 09.2018
7. Graphic Designer (Freelance)

   @Redbubble
   • Created and marketed original t-shirt and merchandise designs using Inkscape, GIMP, and Adobe Illustrator.

   • Managed end‑to‑end design projects, enhancing visual branding for online storefronts.
   10.2011 - 11.2014
8. Administrative Assistant (Accounting Clerk)

   @CAER
   • Processed financial documents, maintained accurate records in TOTVS ERP and MySQL databases.

   • Supported month‑end closing activities and database reconciliation.
   06.2011 - 12.2012