okazakee
Fullstack Developer
React Native Engineer specializing in mobile crypto and decentralized identity. I work on high-reliability mobile applications at the intersection of consumer UX and protocol-level complexity. At Portal, I work on the React Native + Expo stack for a production Nostr + Lightning wallet, managing intricate state management, secure cryptography, and native integrations across 36k+ lines of TypeScript.
My focus:
- Mobile-first architecture for crypto/web3 applications
- Complex state management and offline-first sync patterns
- Secure storage, biometric auth, and sensitive key management
- Protocol integration (Nostr, Bitcoin/Lightning, Breez SDK)
- Native module integration (Kotlin/Swift) for platform-specific features
- Rust protocol layer integration via uniffi bridges
- DevOps and infrastructure (containerization, Linux systems)
I'm a specialist in React Native and TypeScript with deep expertise in state management, async patterns, and production-grade mobile architecture. I'm comfortable integrating native code and protocol layers, and I continuously explore new domains, from protocol design to system architecture to cryptography.
I'm deeply invested in building the privacy-first, decentralized internet, working hands-on with Bitcoin, Lightning Network, Nostr protocol, and peer-to-peer technologies. I believe in code that respects user autonomy and data sovereignty.
When not shipping features, I'm exploring cryptography, protocol design, and the long-term resilience of decentralized systems.
Tech: React Native, Expo, TypeScript, Nostr, Lightning, SQLite, Biome, Jest, Maestro, Docker, Linux.
Always open to collaborating on projects that push the boundaries of mobile + crypto.
Experience: 3 years
Yearly salary: $70,000
Hourly rate: $0
Nationality: š®š¹ Italy
Residency: š®š¹ Italy
Experience
React Native Engineer
Portal Technologies Inc 2025 - 2026
- Contributed to React Native + Expo architecture for Portal App: worked on state management patterns (16 Context providers) handling concurrent payment flows, identity sync, and offline-first operations across 150+ TypeScript files (36k LoC). - Designed and shipped major product features including onboarding flows, AppLock security, and cloud backup integration with native modules (Kotlin/Swift), owning full lifecycle from design to production. - Worked on Nostr protocol integration: nsec management, NIP-05 identity resolution, profile synchronization with race condition handling and graceful error recovery across device lifecycle. - Implemented secure storage and crypto operations: Bitcoin/Lightning key derivation, biometric authentication flows, and sensitive data isolation using Expo SecureStore and SQLite with Drizzle ORM. - Contributed to payment features: Breez SDK, Nostr Wallet Connect (NWC), and QR/NFC scanning with real-time status sync and fee extraction logic handling both send and receive payment paths. - Raised code quality by introducing Biome linter, Jest testing framework, and Maestro E2E testing across mobile, protocol, and backend layers. - Collaborated across full stack with backend (Rust library via uniffi), protocol teams, and product to ship 30+ features and fixes, debugging complex race conditions in profile setup and database migrations.
Fullstack developer
Entiende SRL 2023 - 2023
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FrontāEnd developer
Enhancers ā Tinexta Group 2023 - 2024
As a freelance Frontend Developer at Enhancers, I contributed to the creation of cuttingāedge digital products for clients like Illumia. This dynamic environment allowed me to continually refine my frontend skills, focusing on delivering seamless user experiences. My primary responsibilities involved technologies such as ReactJS and Angular. Additionally, I gained some backend exposure through a small implementation converting C data from IoT devices to a NodeJSābased backend core.
Fullstack developer
Develops 2023 - 2023
Develops is your onādemand development team. I worked as freelance web developer, with the skills I gained from my recent NextJS course, I have been able to build complex, highāperformance web applications for Develops' clients. This has allowed me to effectively collaborate with our global team of developers and deliver topāquality projects while staying within the constraints of our clients' budgets.
Skills
front-end
full-stack
git
javascript
nextjs
react
english
italian