Guilherme Yuri Bermêo Costa

LinkedIn • GitHub • guilherme.bermeo.dev
Brasília, Brazil • +55 (61) 99634-2237 • 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). Open to remote roles across Canada and relocation.

PROFESSIONAL EXPERIENCE

Senior Software Engineer

First Decision • Brasília, Brazil
December 2023 – Present

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.

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–Present)
- Internal Python ETL for public oversight data using a modular DMOT architecture (Data Model, Orchestrator, Transformer) and SOLID principles.
- Async pipeline (asyncio/aiohttp) with intelligent caching and PDF→Markdown conversion (Docling); tooling: uv, pytest/pytest‑asyncio, Ruff, Pyright.

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

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.
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
Creative Coding (Generative Art): JavaScript + canvas‑sketch project generating experimental visual outputs; explores rendering performance and creative algorithms. Gallery
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
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
Open Source: Front‑end contributor to ProjectMate and a Dungeons & Dragons hotsite; collaborator on SkynexUI.
Research & Publications: Authored a 2023 thesis on elements of narrative in music. Download
Creative Work: Composer of original soundtracks published on Spotify.

TECHNICAL SKILLS

Languages & Frameworks: JavaScript, TypeScript, React, Next.js, Vue.js, Angular, Blazor, GraphQL, Node.js, Python
CSS & UI Libraries: HTML5, CSS3, SASS, Tailwind CSS, Bootstrap, Bulma, Material‑UI (MUI)
Tools & Platforms: Git, GitLab, Azure DevOps, Docker, Rancher, Vercel, SonarQube, SonarLint, DBeaver, CI/CD pipelines, uv, Ruff
Databases: Oracle SQL, Microsoft SQL Server, MySQL
Design & Prototyping: Figma, Adobe XD, Axure RP, Sketch
Other: C#, Unity, Expo, Firebase, React Hook Form, Zod