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About What I do Stack Projects Guides Contact

Frontend & Mobile Engineer

I build interfaces that feel alive.

I'm Brandon — a frontend & mobile developer obsessed with motion, detail, and code that's actually tested. I turn ideas into fast, polished products that feel great to use.

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Frontend craft Mobile apps Tested & reliable
Brandon Manzo
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Tools I reach for every day

ReactReact NativeTypeScriptFlutterJestNeovimAstroNestJSDartSwiftKotlinFigmaReactReact NativeTypeScriptFlutterJestNeovimAstroNestJSDartSwiftKotlinFigma
About me

From pixel to production

I'm Brandon, a developer with 8 years years of experience shipping user-centered products. My heart is in the frontend and on mobile — crafting interfaces that are smooth, accessible, and a joy to use.

But I don't stop at the surface: I'm comfortable across the backend, and I genuinely love QA, automation, and testing. Solid tests are how I ship with confidence and sleep at night.

8+ Years building software
7+ Shipped projects & apps
20+ Languages, frameworks & tools
100% Commitment to testing
FUN FACT

When I'm away from the keyboard you'll find me drawing, playing video games, and chasing the spot where creativity meets clean software.

What I do

Skills that ship products

A full-stack toolkit with a frontend-first soul. Here's where I bring the most value.

01

Frontend Development

Accessible, performant and animated interfaces with React, Next.js and Astro. Pixel-perfect, responsive, and delightful in motion.

02

Mobile Development

Native-feeling cross-platform apps with Flutter and React Native — from idea to the App Store and Google Play.

03

Backend Development

Reliable APIs and services with Node and NestJS. Clean architecture, sensible data models, and endpoints that scale.

04

QA & Automation

Automated pipelines and end-to-end coverage that catch bugs before users do — so every release ships with confidence.

05 Favorite

Testing

My favorite craft. Unit, integration and e2e tests with a TDD mindset. Code that's documented, trustworthy and safe to change.

Stack

Technologies & tools

The toolbox I use to design, build, test and ship.

Frameworks & Libraries

Where most of my day happens — web and mobile.

React React React React Native Flutter Flutter Astro Astro Next.js Next.JS NestJS Nest.JS

Languages

Typed where it counts, native where it helps.

TypeScript Typescript JavaScript Javascript Dart Dart Kotlin Kotlin Swift Swift Rust Rust C++ C++

Testing & QA

My favorite part of the job.

Jest Jest Vitest Vitest Testing Library Testing Library Postman Postman

Tools

Editor, devices, pipelines and design handoff.

Git Git GitHub Github Neovim NeoVim Xcode Xcode Android Studio Android Studio Node.js Node Figma Figma Storybook Storybook Prettier Prettier ESLint ESLint
Selected work

Projects

A few things I've built and shipped — straight from my GitHub.

PROJECT 01 GOOGLE PLAY

Minimal Tic Tac Toe

A clean, minimalist Tic Tac Toe game for Android — my dive into mobile development with Flutter, live on Google Play.

Dart Dart Flutter Flutter
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PROJECT 02 PUB.DEV

DPI Validator

A lightweight Dart package to validate Guatemalan DPI numbers, fully tested and published on pub.dev.

Dart Dart
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PROJECT 03 PUB.DEV

NIT Validator

A lightweight Dart package to validate Guatemalan NIT numbers, fully tested and published on pub.dev.

Dart Dart
Code View
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Let's build something great

Have a project, an idea, or just want to say hello? My inbox is always open.

Send me an email Connect on LinkedIn

I'm always open to new projects, collaborations, or simply saying hello.