# Guilherme Yuri Bermêo Costa [LinkedIn](https://www.linkedin.com/in/gmbermeo) • [GitHub](https://github.com/gmbermeo) • [guilherme.bermeo.dev](https://guilherme.bermeo.dev) Brasília, Brazil • +55 (61) 99634-2237 • [guilherme.bermeo@gmail.com](mailto:guilherme.bermeo@gmail.com) --- ## PROFESSIONAL SUMMARY Senior Front‑End Engineer & UX Analyst with 10+ years delivering responsive, high‑performance web apps. Specialized in React, Next.js, TypeScript, Tailwind CSS, and MUI. Proven record modernizing legacy systems, building accessible (WCAG 2.1) interfaces, and collaborating in agile, cross‑functional teams. Experienced with SSR/ISR, performance optimization, and E2E testing (Cypress). Holds Google Associate Cloud Engineer Certification (Feb 2025–Feb 2028). Fluent in Portuguese; proficient in English (IELTS 7.0). --- ## PROFESSIONAL EXPERIENCE ### Senior Software Engineer **First Decision** • Brasília, Brazil _December 2023 – Present_ - Led front‑end development with Next.js 14, 15 and 16, 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. #### Key Project & Contributions - **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. - **HarpIA (2025)** - Developed an automated ETL system for the Attorney-General's Office (AGU) in partnership with the Federal Court of Accounts (TCU) for internal process data sharing. - Engineered using Python and Apache Airflow on Oracle Cloud, utilizing aiohttp for high-performance extraction and Pydantic for data validation. --- ### Senior Front‑End Engineer **TTY2000** • Brasília, Brazil _April 2023 – November 2024_ - 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. #### Key Projects & Contributions - **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: - _“Programa de Gestão e Desempenho (PGD) na administração pública: efeitos motivacionais nos servidores da AGU”_ - [Thesis link](https://repositorio.fgv.br/items/e258f8f1-5eed-40db-bdda-921e9760a158/full) --- ### Front‑End Engineer & UX Consultant **TTY2000** • Brasília, Brazil _September 2022 – April 2023_ - 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. --- ### Front‑End Engineer **Advocacia‑Geral da União (AGU)** • Brasília, Brazil _January 2022 – September 2022_ - 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). --- ### Senior UX Designer **Advocacia‑Geral da União (AGU)** • Brasília, Brazil _September 2018 – January 2022_ - 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. --- ### Operations Analyst & UX Designer **BBTS (Banco do Brasil Technology Branch)** • Brasília, Brazil _April 2015 – September 2018_ - 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. --- ### Graphic Designer (Freelance) **Redbubble** • Remote _October 2011 – November 2014_ - 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. --- ### Administrative Assistant (Accounting Clerk) **CAER (Roraima’s Water and Sewage Company)** • Boa Vista, Brazil _June 2011 – December 2012_ - Processed financial documents, maintained accurate records in TOTVS ERP and MySQL databases. - Supported month‑end closing activities and database reconciliation. --- ## EDUCATION - **Graduate Specialization in Digital Game Development**, Faculdade UniBF – 2023 _Thesis: “Leitmotif, Sound Design, Horizontal Re‑sequencing & Vertical Re‑orchestration: Introduction to Narrative in Music”_ - **Graduate Specialization in Public Relations, Advertising & Applied Communication**, Faculdade UniBF – 2021 - **Technology Degree in Systems Analysis & Development**, Faculdade Cathedral – 2014 --- ## TRAINING & CERTIFICATIONS - Associate Cloud Engineer Certification (CERT‑A‑ACE: 163700) - Google, 2025 - React Complete with Hooks (36h) – Origamid.dev, 2022 - Motion Design (110h) – Alura, 2021 - Game Design (60h) – Alura, 2021 - Agile Scrum Methodology (20h) – SENAC (Brasília, DF), 2019 - HTML & CSS (52h) – Alura, 2016 - Administrative Assistant (800h) – SENAI (Boa Vista, RR), 2012 --- ## LANGUAGES - Portuguese (Native) - English (IELTS 7.0 General Training) - French (DELF A2) --- ## ADDITIONAL PROJECTS & ACHIEVEMENTS - **QMK Keyboard Community:** Contributed to firmware (BM40v2, CRKBD) including a Neo‑Latin keymap in QMK; [published keymap](https://qmk-pull-request.bermeo.dev). - **A1Z26 – O Enigma do Sol Oculto:** Web‑based A1Z26 cipher tool to prevent conversion/summing errors for a Brazilian CYOA gamebook, enabling accurate in‑game enigmas. [Visit](https://a1z26.bermeo.dev) - **Creative Coding (Generative Art):** JavaScript + canvas‑sketch project generating experimental visual outputs; explores rendering performance and creative algorithms. [Gallery](https://corrupted-code.bermeo.dev) - **Come Out Fighting (Unity/C#):** Turn‑based strategy (game jam). Implemented gameplay systems in Unity/C# (random tile destruction, resource management) and produced the original soundtrack; roles spanned game design, development, and audio. [Page](https://come-out-fighting.bermeo.dev) - **Cthulhu Ate My Soldiers (Unity/C#):** Tower‑defense + brawler hybrid built with Unity 3D; contributed game design, art, and coding, including mechanics and progression tuning. [Page](https://cthulhu-ate-my-soldiers.bermeo.dev) - **Open Source:** Front‑end contributor to [ProjectMate](https://www.projectmate.net) and a Dungeons & Dragons hotsite; collaborator on SkynexUI. - **Research & Publications:** Authored a 2023 thesis on elements of narrative in music. [Download](https://guilherme.bermeo.dev/download/article-introduction-to-narrative-in-music[br].pdf) - **Creative Work:** Composer of original soundtracks published on [Spotify](https://open.spotify.com/artist/4cdJMNyV0fp9j3RjKosbFd?si=T23_Jh0sSmSnYWIZwlgbCw). --- ## TECHNICAL SKILLS - **Languages & Frameworks:** JavaScript (ES6+), TypeScript, React (Hooks, Context API), Next.js (SSR, SSG), Node.js, Python, Vue.js, Angular - **Architecture & Principles:** Microservices, RESTful APIs, GraphQL, Clean Code, SOLID, Web Accessibility (WCAG 2.1), Agile/Scrum - **CSS & UI:** Tailwind CSS, Material-UI (MUI), SASS, HTML5, CSS3, Bootstrap, Bulma - **Tools & DevOps:** Git, Docker, Kubernetes, Rancher, Azure DevOps, Vercel, CI/CD, SonarQube, Jest, Cypress, uv, Ruff - **Databases:** Oracle SQL, MySQL, Microsoft SQL Server - **Design:** Figma, Adobe XD, Sketch, Axure RP