Senior Frontend Engineer

Bruno
Alencar

Senior Frontend Engineer with 9+ years of experience building scalable web and mobile applications using React and React Native. Delivers high-performance, test-driven solutions with strong focus on user experience, reliability, and clean architecture.

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portfolio.ts
1// Senior Frontend Engineer
2
3const engineer = {
4  name: "Bruno Alencar",
5  role: "Frontend Eng.",
6  stack: [
7    "React", "TypeScript",
8    "CI/CD", "React Native"
9  ],
10  available: true
11}
9+
Years Exp
99+
Projects
React React Native TypeScript Next.js Node.js Testing Library Sentry Cypress Storybook AWSReact React Native TypeScript Next.js Node.js Testing Library Sentry Cypress Storybook AWS
Selected Work

Projects
that matter.

01 — Featured
React Native TypeScript CI/CD Testing Library IOS / Android

Manabu Academy

Learn Japanese with Manabu Academy in an entertaining and intuitive way, Hiragana, Katakana to more complex sentences, which in an easy-to-understand way Manabu Academy helps you learn Japanese! Unique learning experience!

View IOS → View Android →
https://apps.apple.com/us/app/learn-japanese-manabu-academy/id994741974
02
React Native Redux IOS / Android

Lista Simples

Organize your grocery shopping every month. If you are looking for a quick way to build your Grocery list and have it always on hand, download the Lista Simples! More than 50k downloads!

View IOS → View Android →
03
React JS React Native REST IOS / Android

Bruno Alencar — Public Projects

Throughout my career, I’ve primarily worked on proprietary and enterprise-level applications, which prevents me from making most of my projects public. That said, I focus on clearly presenting the technical challenges, solutions, and business impact behind each project. However, you can find some of my public work below.

View IOS → View Android →
Expertise

What I
bring.

I specialize in building production-grade interfaces with obsessive attention to performance and detail.


From pixel-perfect component systems to complex data visualizations, I bridge the gap between design intent and engineering reality.

⚛️
React
Expert
⚛
Redux/Redux-saga
Expert
⚛️
React native
Expert
⸆⸉
TypeScript
Expert
🎨
CSS / SCSS
Expert
🧪
Testing
Advanced
🛠️
CI/CD
Advanced
Career

Where I've
been.

2020 — Now
Senior Frontend Engineer
Air Liquide

Built and scaled web and mobile applications used across 78+ countries, improving internal process efficiency Increased application performance by optimizing React architecture, reducing load time and improving responsiveness
Implemented CI/CD pipelines, accelerating deployment cycles and reducing manual errors
Developed robust frontends using React, React Native, TypeScript, Redux, and Docker
Ensured code quality through unit and E2E testing (Jest, Testing Library, Cypress)
Collaborated with cross-functional teams to deliver secure and scalable solutions

2018 — 2020
Frontend Engineer
2SOW Tecnologia

Delivered government and enterprise systems using React, Angular, Ionic, and TypeScript
Improved application performance and resolved critical frontend bottlenecks
Integrated frontend systems with backend APIs, ensuring reliability and data consistency

2015 — 2020
Founder & Developer
Manabu Academy

Built and launched a mobile app for learning Japanese
Reached 3,000+ active users organically

2014 — 2017
Frontend Developer
DBR.ag / IOB / Early Career

Developed e-commerce platforms and internal systems
Built and maintained features improving usability and performance

Let's build something.