Full Stack Developer (6+ years) specialised in React, React Native, and Node.js. I craft scalable, performant apps with a focus on clean architecture, accessibility, and delightful UX. Lately I've been going deeper into the native side of React Native: Nitro Modules, Swift/Kotlin, and on-device ML.
- 🚀 Startup enthusiast, thriving in collaborative and dynamic teams
- 🧩 Problem solver, always learning and experimenting with new tech
- 🏆 Open source author & maintainer of several React Native libraries
- 🌎 Multi-lingual, remote work advocate
Outside of tech, I enjoy football, hiking, and exploring new cultures.
Languages & Frameworks
Data & Infra
- 🎙️ On-device voice features for React Native (wake word detection, VAD) with Nitro Modules + ONNX Runtime
- 🧱 Reusable UI components for React Native
- 📱 Mobile apps with Expo & Tamagui
- 🏗️ Design patterns for scalable mobile logic & performance optimisation
On-device wake word detection for React Native. No cloud, no license keys, no JS bridge.
- 🧠 Runs the openWakeWord pipeline (mel spectrogram → speech embedding → keyword classifier) with ONNX Runtime
- ⚡ Built with Nitro Modules (Swift + Kotlin). Audio is captured natively; JS only receives detection events
- 🔑 Multiple keywords at once over a shared audio front-end
- 🔇 Optional Silero VAD gating to cut false positives
- 🌍 Train custom keywords in any language with a free Colab notebook
- 📄 MIT licensed
npm install react-native-nitro-wakeword react-native-nitro-modules
| Library | What it does | npm |
|---|---|---|
| react-native-nitro-wakeword | On-device wake word detection (Nitro + ONNX) |  |
| rn-inkpad | Signature / drawing pad component |  |
| rn-custom-alert-prompt | Customisable alert & prompt dialogs |  |
| rn-segmented-tab-controls | Segmented tab controls |  |
| Project | Description |
|---|---|
| iFootSchedule | Real-time Champions League & World Cup tracker |
| The Vine Centre App | QR-based check-in for community cupboard visits |
| Teslo API - NestJS eCommerce | Full eCommerce backend (NestJS, PostgreSQL, WebSockets) |
| The Vine Server | Admin portal: user mgmt, 2FA, reporting, file uploads |
- 💬 Open to collaboration and freelance opportunities
- 🐛 Found a bug in one of my libraries? Open an issue, PRs welcome
- 🐦 Twitter/X · 💼 LinkedIn · 🌐 ferriv3ra.dev
More about me...
I love sharing knowledge, contributing to open source, and helping others grow. Ask me anything about React Native, native modules, backend APIs, or building scalable apps!