Fabio Lopes
Frontend Developer
7+ years exp
Management: Under a year (1-5 people)
JavaScript
TypeScript
Node JS
Python
Kotlin
SQL
Java
Active 11 days ago
Download CVCV
Overview
Technical skills
Timeline
Roles
Overview
Frontend web developer (Junior) focused on building small static Next.js portfolio and marketing sites. The strongest proven skill is shipping bilingual, statically rendered Next.js pages with Tailwind and message catalogs, evidenced by package.json and messages/*.json. There is little public evidence of advanced client-state patterns, automated tests, backend integrations, or measured performance engineering.
Phone
Technical skills
Languages
7
JavaScript
TypeScript
Node JS
Python
Kotlin
SQL
Java
Frontend
10
React.js
Next.js
Tailwind CSS
Redux
Vue.js
styled-components
Yup
Material UI
Mantine
Apollo Client
DevOps
7
Amazon S3
AWS
GitHub
GitLab
New Relic
Git
Azure DevOps
Other
25
PostgreSQL
MongoDB
React Native
Jest
Claude
Playwright
Copilot
Axios
Flask
Azure
Express
ChatGPT
GraphQL
AWS Lambda
GitHub Actions
Figma
Apollo
GitLab CI
Rest API
PostCSS
ESLint
Gitflow
Cursor
CI/CD
NFT
Timeline
Senior Frontend Developer
·
Senior
Great Wolf Lodges
·
Full-Time
Sole frontend engineer on an experimentation team for a booking engine supporting large-scale resort operations. Architected and shipped a multi-step Season Pass flow and a Voucher Promotion system from zero to production. Improved performance and reliability with unit and end-to-end tests, and used AI-assisted tools to maintain delivery velocity.
React.js
Redux
JavaScript
styled-components
Yup
Git
Azure DevOps
Jest
Playwright
Copilot
Claude
Senior Fullstack Developer
·
Senior
PayPal
·
Full-Time
Contributed to Venmo merchant checkout products, including the embedded “Pay with Venmo” integration in merchants’ checkout flows. Implemented frontend and backend changes using TypeScript, Apollo GraphQL caching, and optimistic updates while following security practices for a high-compliance fintech environment. Delivered payment method integrations and checkout UX improvements within a fullstack squad handling large transaction volumes.
React.js
Node JS
TypeScript
GraphQL
Apollo Client
GitHub
Senior Frontend Developer
·
Senior
Casa do Saber
·
Full-Time
Led frontend development and launched the company’s first native Smart TV applications for WebOS and Tizen. Delivered UI integration across web and Smart TV surfaces while maintaining code quality and end-to-end user experience. Worked with React Native and TypeScript to support streaming use cases at scale.
React.js
React Native
TypeScript
styled-components
GitHub
Tech Lead / Senior Fullstack Developer
·
Lead
Btix
·
Full-Time
Owned frontend architecture and led implementation for an NFT-powered ticketing and event management platform. Delivered an NFT ticket sales system with blockchain backend integration and built systems for events, tickets, coupons, and promoter management. Improved delivery efficiency through disciplined branching and release practices while shipping production features on schedule.
React.js
Next.js
TypeScript
Node JS
Mantine
Yup
GitHub
Material UI
React Native
Gitflow
Mid-Level Frontend Developer
·
Middle
Banco Inter
·
Full-Time
Led frontend development for a corporate account opening platform in a team integrating regulatory compliance requirements. Implemented UI and workflow logic connected to backend checks including facial recognition for KYC identity verification. Improved delivery outcomes on a high-scale platform used by millions of clients.
React.js
styled-components
TypeScript
GitLab
New Relic
Jest
AWS
Mid-Level Frontend Developer
·
Middle
Queima Diária
·
Full-Time
Developed a streaming system and a video casting experience for Smart TVs using React and React Native. Supported TV platform compatibility across Samsung Tizen and webOS through responsive UI and casting workflows. Contributed to product improvements driven by engagement and app compatibility metrics.
React.js
React Native
JavaScript
styled-components
TypeScript
Redux
Junior Frontend Developer
·
Junior
Editora Forum
·
Full-Time
Built the company’s first B2C e-commerce platform from scratch, including storefront UI and end-to-end user flows. Integrated secure payment gateways and supported product diversification beyond the initial catalog model. Worked across modern frontend stacks to deliver reliable customer checkout experiences.
React.js
Next.js
Tailwind CSS
Node JS
Amazon S3
JavaScript
TypeScript
Redux
Junior Frontend Developer
·
Junior
Teknisa
·
Full-Time
Served as the main frontend developer for an AI-powered object recognition system. Built a responsive user interface for interacting with advanced ML capabilities in collaboration with AI/ML engineers. Delivered frontend features using JavaScript and Vue-based UI patterns.
JavaScript
Vue.js
React.js
Universidade Federal de Minas Gerais (UFMG)
Bachelor's Degree ·
Information Systems
Junior Backend Developer
Confidence: Low Generalist
Frontend-focused developer at a junior level with a practical strength building static and internationalized Next.js React sites. Proven skill implementing static Next.js projects and localization as shown by portfolio/package.json and use of next-intl middleware in the frontend artifacts. Not evidenced are non-trivial backend responsibilities such as production-grade API design, schema migrations, concurrency handling, or system-level reliability engineering.
API Design
How well APIs are designed
Not evidenced in public code
Data Layer & Database
Working with databases
Not evidenced in public code
Scalability & Performance
Handling load and speed
Not evidenced in public code
System Architecture
Overall system structure
Not evidenced in public code
Security & Auth
Protecting data and access
Not evidenced in public code
Reliability & Observability
Stability and monitoring
Not evidenced in public code
Expertise
Node.js· Junior
Python· Junior
Technologies
Java
Kotlin· since 2023 · Junior
Node JS· since 2020 · Junior
Rest API
GraphQL· since 2024
Flask
Axios
Recommendations
- Build and maintain static or server-rendered Next.js sites and frontend features that require internationalization and theme persistence (e.g., Next.js + next-intl work).
- Implement small fullstack features that pair a simple Node.js API with the frontend (CRUD endpoints using Express or a lightweight server) to grow API design and boundary-hardening experience.
- Work on single-service backend tasks in Python/Flask that focus on data validation, request timeouts, and simple persistence to gain observable production patterns before moving to distributed systems.
Repositories
The developer's experience in this domain has been verified based on AI analysis of the following repositories:
Junior Frontend Developer
Confidence: Low UI Engineer
Frontend web developer (Junior) focused on building small static Next.js portfolio and marketing sites. The strongest proven skill is shipping bilingual, statically rendered Next.js pages with Tailwind and message catalogs, evidenced by package.json and messages/*.json. There is little public evidence of advanced client-state patterns, automated tests, backend integrations, or measured performance engineering.
UI Component Architecture
2/10
How interface parts are built
Basic component structure present but no evidence of deliberate component-system architecture, composition patterns, or custom lifecycle-heavy hooks.
Responsive & Cross-browser
3/10
Works on all screens and browsers
Responsive layout handled via Tailwind and standard Next.js patterns; basic cross-browser/viewport awareness is present but no advanced feature-detection or RTL/i18n layout adaptations in code inspected.
Performance Optimization
1/10
Speed of the interface
No measurable performance work or instrumentation found; only standard Next build/dev scripts and no bundle-analysis or targeted optimizations in inspected files.
Evidence
Accessibility & Semantics
1/10
Usable for everyone
Very limited accessibility evidence in source; no ARIA patterns, focus-management logic, or accessibility tests surfaced in the analyzed human-authored files.
State Management & Data Flow
1/10
Managing data in the app
No advanced client state discipline or server-state management patterns observed; no evidence of request cancellation, optimistic updates, or state machines in inspected code.
UX & Visual Polish
3/10
Look and feel quality
Good visual polish for a portfolio site and explicit multilingual message files exist, indicating attention to UX in public pages, but UX edge-state handling and undo/rollback patterns are not evidenced.
Verified artifacts
Expertise
React· Junior
HTML & CSS· Junior
Modern Web Frameworks· Junior
Technologies
JavaScript· since 2019 · Middle
TypeScript· since 2020 · Middle
Vue.js· since 2019
Redux· since 2020
Tailwind CSS· since 2020
Next.js· since 2020
Express
Azure DevOps· since 2025
GitHub Actions
New Relic· since 2022
GitLab CI
Azure
Figma
CI/CD
Git· since 2025
AWS· since 2022
React.js· since 2019
Gitflow· since 2023
Apollo Client· since 2024
Material UI· since 2023
PostCSS
ESLint
styled-components· since 2021
Mantine· since 2023
AWS Lambda
Yup· since 2023
GitHub· since 2023
GitLab· since 2022
Amazon S3· since 2020
GitHub· mentioned only
Recommendations
- Develop static marketing or portfolio sites and localized public-facing pages using Next.js and Tailwind.
- Build and maintain small component libraries and design-system work for consistent UI across pages.
- Implement localized static exports and theme/dark-mode UIs that require careful i18n and CSS token management.
Repositories
The developer's experience in this domain has been verified based on AI analysis of the following repositories:
Junior QA Engineer
Confidence: Low Generalist
Fullstack web generalist at a junior level with hands-on experience building static Next.js frontends and small Python Flask APIs. The strongest proven skill is frontend static site development with Next.js and localization, evidenced by portfolio/package.json (next, next-intl, TypeScript) and the README feature description. There is little to no public evidence of automated test suites, test infrastructure, CI test integration, contract testing or performance testing in the authored code.
Test Automation Frameworks
Building automated tests
Not evidenced in public code
Test Coverage & Strategy
What and how to test
Not evidenced in public code
API & Integration Testing
Testing how parts work together
Not evidenced in public code
Performance & Load Testing
Testing speed under load
Not evidenced in public code
Bug Reporting & Analysis
Finding and describing bugs
Not evidenced in public code
CI Test Integration
Running tests automatically
Not evidenced in public code
Technologies
Python· since 2023 · Junior
Playwright· since 2025
Jest· since 2022
Recommendations
- Develop static marketing and portfolio sites, including internationalization and accessible responsive UI using Next.js and TypeScript.
- Implement small fullstack prototypes or MVP APIs with Flask and Mongo-style data stores for rapid validation.
- Build out a test foundation: add unit tests, endpoint integration tests and simple CI workflows to raise quality and reliability.
- Help convert manual QA checks into automated smoke and regression tests once a testing framework is introduced.