Software Engineer • Front-end specialist • Brazil

I turn complex systems into products that feel simple.

I am a Software Engineer specialized in Front-end, with an expanding full-stack range. I build web and mobile products by connecting architecture, integrations, and product decisions — from the technical foundation to the user experience.

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Full-stack Developer

01 / Selected project

Campsoft

Modernization of Campsoft’s administrative platform, combining Front-end architecture, consistent interfaces, and technical collaboration with React, Next.js, and TypeScript.

React
Next.js
TypeScript

01 / Selected work

Selected projects

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Full-stack DeveloperWeb
Campsoft
Campsoft · 2024 — atual
Modernization of Campsoft’s administrative platform, combining Front-end architecture, consistent interfaces, and technical collaboration with React, Next.js, and TypeScript.
Problem
Replace the legacy administrative platform
Decision
Adopt a modern foundation for the administrative area
Impact
Administrative area modernized
I contributed to the complete migration of the dashboard and customer-management experience to Next.js and Material UI, introduced Storybook, and support the team through code reviews, PR approvals, and pair coding.
- React |
- Next.js |
- TypeScript |
- Material UI |
- TanStack Query |
- TailwindCSS |
- React Testing Library |
- REST APIs |
- Storybook |
- Docker |
- Micro frontends |
Senior Front-end DeveloperWebMobile
Fintta
Fintta · 2023 — 2024
Technical leadership of a web and mobile product for sports-venue management and amateur football organization, bringing together bookings, payments, operations, and data-informed experience.
Problem
Represent complex operational rules
Decision
Establish standards for web and mobile
Impact
D1 > 70% · D7 ~ 40%Retention recorded in the product
I defined and evolved the web and mobile Front-end architecture, developed booking, payment, and operational flows, implemented UXCam and a new onboarding experience, and mentored a junior Front-end developer.
- React |
- React Native |
- TypeScript |
- REST APIs |
- UXCam |
- React Testing Library |
- React Query |
- Redux Toolkit |
Front-end DeveloperWeb
Estudando.com
Estudando.com · 2020 — 2023
Evolution of an EdTech platform for students, teachers, and schools, with a shared Design System, assessment workflows, and educational content management.
Problem
Serve different education profiles
Decision
Build a shared Design System
Impact
10k+ · 50Students · registered schools
I developed product areas for different user profiles, including the Design System shared by the student and school platforms, the assessment system, and the educational content manager.
- React |
- Next.js |
- TypeScript |
- Material UI |
- Emotion |
- Redux |
- Redux-Saga |
- React Query |

Campsoft
Full-stack Developer · 2024 — atual
Fintta
Senior Front-end Developer · 2023 — 2024
Estudando.com
Front-end Developer · 2020 — 2023

Building and evolving web and mobile products, from the interface to the flows that support the experience.
Front-end architecture and gradual legacy migrations toward codebases that are easier to evolve.
Technical collaboration through code review, shared context, and continuous improvement of the development process.

How I work

Front-end depth. Product-connected decisions. Expanding engineering range.

Front-end is my specialty. I work close to product and the integrations that turn a strong interface into a complete experience.

01
Front-end as a specialty
Interfaces, architecture, accessibility, and systems that remain understandable as the product changes.
02
Product as context
Technical decisions shaped by people’s flows, business constraints, and team collaboration.
03
Full-stack as an expansion
Web, mobile, APIs, and integrations to contribute beyond the interface without diluting Front-end depth.

Stack & Ecosystem

Technologies I work with daily

Proven tools across web apps, mobile engineering, and front-end architecture.

React
Next.js
TypeScript
JavaScript
React Native
Node.js
Express
Tailwind CSS
Material UI
TanStack Query
Redux Toolkit
PostgreSQL
Supabase
Docker
Git
GitHub

Open Source & Activity

GitHub presence & consistency

Public repositories, shared code, and continuous technical growth across the software ecosystem.

View GitHub profile

Repositories

52+public repos

Projects & contributions

Production applications, architecture explorations, packages, and public repositories on GitHub.

github.com/ElmiRabelo

Languages

Stack distribution

Strong focus on TypeScript and modern JavaScript ecosystem.

TypeScript54%
JavaScript24%
CSS / HTML14%
Dart / Outros8%

Verified profile metrics

Consistency

Focus & coding principles

Software craftsmanship focused on maintainability, product value, and best practices.

✓5+ years building and shipping production-ready software
✓Deep specialization in React, Next.js, and TypeScript
✓Projects exploring modern architecture, mobile, and applied AI

5+ years of continuous activity

A good product feels simple to use — even when there is a lot of engineering behind it.

Clarify the problem before generalizing the solution.
Build for the next change, not only for today’s delivery.
Treat interface quality as part of the product outcome.
Share context to make good decisions repeatable.

About me

I am a Software Engineer specialized in Front-end, with experience building web and mobile products. I am curious about startups, architecture, product, and the practical use of AI in software development.

Learn more about my journey

Does your next challenge call for engineering and product perspective?

If my experience fits what your team needs right now, I would be glad to talk.

Let's talk LinkedIn

Bahia, Brazil · remote

I turn complex systems into products that feel simple.

Selected projects

Campsoft

Fintta

Estudando.com

Experience applied to real products