Available for work
Senior Full-Stack Engineer

I'm Maxwell

Senior Full-Stack Engineer with 5+ years building scalable web and mobile applications in React, Next.js, React Native, and Node.js. I drive architectural decisions, improve system performance, and ship high-impact solutions.

About Me

Hi, I'm Maxwell

Senior full-stack developer with 5+ years driving architecture, performance, and high-impact delivery across web and mobile products.

I move from front-end to back-end — React, Next.js, React Native, and Node.js — building interfaces that flow and APIs that scale.

Currently

Acting as frontend tech lead at dotcode, guiding architecture and best practices.

Building a React component and template library with CI/CD that cut new-project setup from ~8h to 30min.

Frontend

06
ReactNext.jsVueTypeScriptTailwindFlutter

Backend

05
Node.jsNestJSJavaJavaSpring BootSpring BootPrisma

Tooling & AI

03
DockerDockerFigmaClaudeClaude
Off the clock
Video gamesMusicGood coffee

Experience

05 roles
2025Current
dotcode
Oct 2025 — Present6mo

Senior Full-Stack Developer

dotcode · São Paulo, Brazil

Leading frontend architecture and scaling the team's delivery capability through reusable foundations.

  • 01Acting as the frontend technical reference — guiding best practices, architectural decisions, and mentoring other developers.
  • 02Built a React component and template library with CI/CD, cutting new-project setup from ~8h to 30min and improving maintainability.
Stack
Docker
Vivo
Feb 2025 — Sep 20257mo

Senior Full-Stack Developer

Vivo · São Paulo, Brazil

Delivered platform engineering for support teams at one of Brazil's largest telcos.

  • 01Built an internal low-code platform letting support teams author ServiceNow incident automations, automating 20–50% of incidents in managed queues.
  • 02Fixed a login issue blocking ~15% of users from new devices by enforcing single-device access with real-time session invalidation on login and session validation at app startup.
Stack
Docker
2023
dotcode
Jun 2023 — Jan 20251y 7m

Mid-Level Frontend Developer

dotcode · São Paulo, Brazil

Owned frontend performance, tooling, and build pipeline for a customer-facing product.

  • 01Reduced frontend build time by ~70% (from ~30 to ~8 minutes) by migrating from Webpack to Vite and eliminating unused dependencies and dead code.
  • 02Cut app load time from ~2.5s to ~800ms by implementing code splitting and optimizing imports for more efficient tree shaking, shrinking the bundle.
Stack
Docker
2022
GB Agritech
Jun 2022 — May 202311mo

Mid-Level Frontend Developer

GB Agritech · São Paulo, Brazil

Drove frontend architecture on an agribusiness ERP.

  • 01Proposed and led the frontend migration of an ERP from Next.js to Vite — SSR added little value for a client-centric app — improving maintainability and cutting build time by ~30%.
Stack
2021
vya.digital
Jan 2021 — Oct 20221y 9m

Junior Full-Stack Developer

vya.digital · São Paulo, Brazil

First full-stack role — shipping across the stack on consumer-facing apps.

  • 01Eliminated performance degradation in a chat app by implementing message-list virtualization, keeping performance consistent regardless of message volume.
Stack

Projects

03 projects

A mix of personal experiments and production work — case studies span motion-driven interfaces, full-stack platforms, and smaller one-offs I ship between bigger things.

Moonly
01/ 03
Case study

Moonly

Moonly is a web app that shows a song's lyrics synchronized with the music.

InPro
02/ 03
Case study

InPro

A platform where you can expose your gaming skills to get higher chances on getting noticed by professional teams.

Small Projects
03/ 03
Case study

Small Projects

A collection of small projects I've worked on.