MatheusAraújo
Front-end engineer with 4 years in. React, TypeScript, and a soft spot for fast, well-built interfaces.
Software Engineer — React, TypeScript, Next.js, Node, GraphQL.
— 01 · About
I build the front-end people actually use.
Mostly React and TypeScript. The kind of work that ships, gets used, and stays standing.
It's been 4 years writing front-end for real products. I've worked on B2B platforms, real-time checkouts, a design system that became the base for other teams. What I enjoy most is the part nobody sees: a component that behaves the same everywhere, a page that opens fast, code the next person can read without cursing.
“If it's hard to use, it's not done.”
Day to day it's React, Next.js and TypeScript, plus everything around them. Design systems in Storybook, tests that catch the bug before users do, REST and GraphQL APIs. Lately I keep leaning more toward architecture and web performance.
- Location
- Fortaleza, CE — Brazil
- Languages
- Portuguese · English
- Focus
- Front-end · Performance · Design systems
- Coding
- 4+ years
- Currently
- @ Twila — Mid Frontend Engineer
— 02 · Experience
Where I have worked
Four teams across 4 years. Started in PHP, now I live in React and Next.js.
Mid Frontend Engineer
@ TwilacurrentAug 2025 — Present · Joinville, SC, Brazil
- Product engineering with React, TypeScript and Next.js
- Focus on performance, scalability and delivery quality
Frontend Engineer
@ KividApr 2024 — May 2025 · Salvador, BA, Brazil
- B2B platform in React.js and Next.js
- Real-time card and PIX checkouts with WebSockets
- Design System integrated with Storybook, reused across multiple products
- Mobile with React Native and Vue + Ionic
- Code reviews and close collaboration with design
Frontend Engineer
@ Brainny Smart SolutionsOct 2022 — Apr 2024 · Pelotas, RS, Brazil
- Continuous evolution of the Efficlin product with React and Next.js
- Mobile apps with React Native, GraphQL and REST integrations
- Atomic Design + Chakra UI at scale
- Automated tests that reduced production bugs
Full Stack Developer
@ Grupo NobreAug 2021 — Nov 2021 · Fortaleza, CE, Brazil
- Full-stack solutions with PHP and Laravel
- Multidisciplinary teams and agile methodologies
- Process standardization and continuous system improvement
2019 — 2021
Freelance + early-career projects building landing pages, internal tools and learning React, Node and modern web tooling.
— 03 · Stack
Tools I reach for
Grouped by where they live in the stack.
— Frontend
- React
- TypeScript
- Next.js
- TanStack
- React Native
- Tailwind
- shadcn / Radix
- Storybook
— Backend & Data
- Node.js
- NestJS
- GraphQL
- REST
- PostgreSQL
- Prisma
- Drizzle
- Better Auth
— Infra & Tooling
- Docker
- Turborepo
- Vite
- Playwright
- Vitest
- Biome
- CI/CD
- Vercel AI SDK
— 04 · Projects
Things I have built
Side projects and open-source. What I make when I get to choose the problem.
Commercial location analysis by ZIP code.
Enter a ZIP code and get a viability report in minutes: recommended niches, competition analysis and the demographic profile of the area. Built on IBGE and OpenStreetMap data, ranked by AI, with adjustable radius (500m, 1km, 2km).
TypeScript · IBGE · OpenStreetMap · AI · Geo · Mercado Pago
Mobile and tablet simulator on any website.
TypeScript · Browser Extension · Chrome · Firefox
Chat with any GitHub repository.
TypeScript · TanStack Start · Better Auth · PostgreSQL · Playwright · Docker · Monorepo
Full-stack starter with Better Auth and shared design system.
TypeScript · NestJS · TanStack Start · Better Auth · Radix · shadcn
— 05 · Contact