Curvinha
Founder
A native iPhone app: you scan a room with LiDAR, then get a proposal with real products you can buy, plus the shopping list. Curated with architects from Curva Interiores.
- SwiftUI the UI
- RoomPlan the scan
- RealityKit the 3D
I build apps and help teams build theirs.
At my largest, 56 people reported up to me. On Coinbase's app infrastructure team I helped with releases and the app's big migrations. Now I consult independently, build Curvinha and maintain libraries like magic-modal and safe-jsx.
Things I made.
The app I'm building now, and the open-source work other teams ship with.
Pegada
Founder
A dating app for dogs on iOS and Android. I built it with Expo and React Native, put it on the App Store in 2023 and open-sourced it in 2025.
- 1,500+ commits: 246 public since I opened the code, 1,300+ before that.
- #2 of the day on Product Hunt, August 10, 2024.
- 461 stars and 152 forks on GitHub, counting Pegava, its first version from the pandemic, now archived.
Lately in Pegada
- #14Upgraded Expo 51 → 55 in one passReact Native 0.74 → 0.83 and React 18 → 19 in the same PR.
- #153Made Android cold start 24% faster2113 → 1606 ms, measured A/B, plus a 9.5% smaller APK.
- #145Moved 170 files by codemod, 0 px changedstyled-components → Unistyles, checked against 64 screenshots.
338k+ npm downloads
Plus 714 GitHub stars on these packages' repos.
- magic-modal223,399
- eslint-plugin-safe-jsx57,145
- react-native-code-push-plugin44,914
- react-native-magic-toast10,032
- magic-observability3,441
magic-modal
652A magic modal you can await from anywhere: React Native, Expo, and the web.
Example · nothing is sentexample.tsx
const answer = await magicModal.show(
HelloModal,
);
// waits here until the modal closes
console.log(answer);Console
// nothing logged yet
safe-jsx
29An ESLint rule for the stray 0 that && leaks into JSX.
1 probleminbox.tsx
<Row label="Inbox">
{count && <Badge n={count} />}
</Row>Inbox0
Problems
Where I've worked
Startups, delivery apps, fintechs, and big tech, since 2017.
2025 → now
Independent consulting
Mobile architecture, engineering leadership and team craft for product companies, plus RL training environments and evals for AI models. Client details under NDA.
2024 → 2025
Migrations on the Coinbase app
On Consumer App Infra. Helped with app releases, the design system migration, rolling out React Compiler and React Native's new architecture, and the move to Expo Prebuild. Test coverage on team-owned files: 25% → 45%.
2023 → 2025
Lead Engineer on D‑ID's mobile flagship
Built the company's new core product, the mobile app, from zero. 1.5M registrants/week on the parent web app. Best UX 2023 on A.Team. Golden Kitty award on Product Hunt.
2022 → 2023
Open‑source design system at Kustomer, then a Meta company
Standardized UI for external developers. Shipped SDKs that simplified Kustomer's API integrations. Authored docs that lifted the cross-functional DevX score.
2022 → 2023
Senior engineer at a fintech
Founded the Mobile Engineering Biweekly forum. Lifted coverage 30% → 80%+. Killed 16k lines of brittle tests with MSW. Discover page 200% faster.
2020 → 2022
Refactored Brazil's biggest beer app
Rebuilt the Browse module. Shipped deep-link handling that lifted marketing-campaign conversion. Co-wrote the code for Mozeic, the in-house design system.
Earlier
2019 → 2020
Alfred Delivery
Coordinated the rewrite of an app serving 90+ franchises across smaller Brazilian cities. ~6-month cutover with legacy Ionic 3 kept alive in parallel.
2017 → 2019
Micro Import Group
Real-time repair-status tracker for an Apple Service Provider. Internal dashboards for technicians and customer service. Headless-CMS sites for the holding's brands.
Gabriel is one of those top 0.1% engineers that are incredibly hard to find. He's a top-notch engineer, and a top-notch human being.
How I can help.
Scoped projects or interim leadership, remote with US teams.
App architecture review
I find out why the app is slow, why every release feels risky, and what the tests let through. You leave with a plan, ranked by risk, that your team runs without me.
- 25% → 45% test coverage on team-owned filesCoinbase 2024 → 2025
- 30% → 80%+ test coverage, after deleting 16k lines of brittle testsGroundswell 2022 → 2023
Big migrations without freezing the roadmap
Expo Prebuild, React Native's new architecture, React Compiler. The migration runs alongside your team, and features keep shipping.
- 4 big migrations I helped with: Expo Prebuild, the new architecture, React Compiler, and the design systemCoinbase 2024 → 2025
- 90+ franchises moved from Ionic to React Native, with the old app live through a 6‑month cutoverAlfred Delivery 2019 → 2020
Fractional engineering lead
I lead the team while you hire: rituals, code review standards, the roadmap, and the hiring loop. Whoever you hire walks into a team that already runs.
- 6 teams at once under my leadWork history
- 56 people reported up to me at my largestWork history
- 4.6 App Store stars on D-ID's app, which I built from zero as Lead EngineerD-ID 2023 → 2025
Design systems and developer experience
A component library your teams actually use, so every new screen ships faster and looks like the rest of the app.
- 177k+ npm downloads. Co-wrote Mozeic's code, Zé's in-house design systemZé Delivery 2020 → 2022
- Open source design system and SDKs I built for outside developers integrating with KustomerKustomer 2022 → 2023
How an engagement runs.
- Review
I read the code, the release pipeline, and the backlog, and talk to whoever owns each one.
A list of what's slowing you down, ranked by risk
- Plan
A short written plan: what to fix first, what it costs, and what can wait.
A written plan, in order and costed
- Ship
I work inside your team on the riskiest part first: the migration, the slow screens, the release train.
Pull requests in your repo, reviewed by your team
- Hand off
Docs, review standards, and an owner on your team for each piece.
A team that keeps it running without me
I'd highly recommend Gabriel to any organization looking for a strong engineering leader who genuinely cares about both his people and the success of the business.
Talks, writing, and what I'm doing now.
Now
- Curvinha, an iOS app for planning your homeOn the Brazilian App Store since Oct 16, 2026
- Scan a room with LiDAR and get a layout in plan and 3D, with real products from Brazilian stores and the shopping list. Curated with architects from Curva Interiores.
Talks
All in Portuguese, 2023 and 2024.
Eficiência com IA
How to lift team throughput with AI in day-to-day engineering.
See all 28 slides on FigmaShipping Mozeic at Zé Delivery
Lessons from co-writing an in-house design system at a high-traffic delivery app.
Forming a Tech Lead, three days at a time
A three-day immersion for new engineering leads.
Mentoring in the Space Squad community
Mentoring through Rocketseat's ambassador program.
Podcast
I hosted the Space Cast podcast on Rocketseat's YouTube. (ended Oct 2023)
Weekly long-form chats with devs, designers and engineering leads about careers and code, January to October 2023.
I'm on all 40 episodes: 41 hours on air and 36,519 views.
Shipped lately
- pegada@1.7.3Configurable daily like limit and a weekly plan
- eslint-plugin-safe-jsx@1.3.9The rule now catches mutable boolean bypasses
- react-native-code-push-plugin@2.0.0Both CodePush server URLs are required, so a bad config fails early
- magic-modal@10.2.0React Native peers are optional, so the web install is one package
Writing
In 2022 I wrote one guide to React Native modals, in English and in Portuguese.
Once you get past two modals, your main component is a mess, and the state is all over the place.
- EN
- PT
magic-modal
652 stars223,399 npm downloads
First published as react-native-magic-modal. Downloads count both names.
Hackathons
From before the day job took the weekends.
1st place
Global Legal Hackathon SP
1st place
Mão na Cevada
2nd place
HackRibeirão
2nd place
Prêmio Jovem Inovador
Finalist
NASA Space Apps Challenge
Tell me about your app
I reply within the week. If it's urgent, LinkedIn is faster.