Cristian
Fullstack
About me
I'm , known online as , a self-taught developer from . I focus on creating and high- web applications, translating complex designs into functional code with strong and skills. I work with clients across various industries, providing effective technical solutions. In parallel, I nurture a strong passion for and technologies, actively exploring , , the protocol, and platforms like . My journey began in and post-production, evolving towards web development in . I firmly support and continue to expand my skills through personal projects showcased in my .
Skills & Tech Stack
This section outlines the and tools that I am proficient in
Frontend
ReactJS
NextJS
ViteJS
JavaScript
TypeScript
TailwindCSS
Backend
PostgreSQL
MongoDB
NestJS
ExpressJS
Tools
Git
Vercel
Supabase
Docker
Bash
Career History
My professional journey and experience
React Native Engineer
Apr 2025 — Apr 2026•1 year
- Led the React Native + Expo architecture for Portal App — designed complex state management patterns (16 Context providers) handling concurrent payment flows, identity sync, and offline-first operations.
- Shipped major product iterations including onboarding redesigns (2+ cycles), AppLock security feature, and cloud backup integration with native modules (Kotlin/Swift), owning full lifecycle from design to production.
- Implemented Nostr protocol integration — nsec management, NIP-05 identity resolution, profile synchronization with race condition handling and graceful error recovery across device lifecycle.
- Architected secure storage & crypto operations — managed Bitcoin/Lightning key derivation, biometric authentication flows, and sensitive data isolation using Expo SecureStore + SQLite with Drizzle ORM.
- Delivered high-reliability payment features — integrated Breez SDK, Nostr Wallet Connect (NWC), and QR/NFC scanning with real-time status sync and fee extraction logic for both send/receive payment paths.
- Raised code quality standards by implementing Biome linter, Jest, and Maestro E2E testing, ensuring production- grade reliability across 150+ TypeScript files (36k LoC).
- Collaborated across full stack — worked 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.
React NativeExpoNOSTR
Portal Technologies Inc
Portal is developing a revolutionary decentralized identity and payment protocol. Our universal mobile app enables self-sovereign digital identity management, passwordless authentication, Lightning Network payments, and zero-knowledge proofs without platform lock-in.
Brescia, Lombardy, Italy•Hybrid
React Native Engineer
- Led the React Native + Expo architecture for Portal App — designed complex state management patterns (16 Context providers) handling concurrent payment flows, identity sync, and offline-first operations.
- Shipped major product iterations including onboarding redesigns (2+ cycles), AppLock security feature, and cloud backup integration with native modules (Kotlin/Swift), owning full lifecycle from design to production.
- Implemented Nostr protocol integration — nsec management, NIP-05 identity resolution, profile synchronization with race condition handling and graceful error recovery across device lifecycle.
- Architected secure storage & crypto operations — managed Bitcoin/Lightning key derivation, biometric authentication flows, and sensitive data isolation using Expo SecureStore + SQLite with Drizzle ORM.
- Delivered high-reliability payment features — integrated Breez SDK, Nostr Wallet Connect (NWC), and QR/NFC scanning with real-time status sync and fee extraction logic for both send/receive payment paths.
- Raised code quality standards by implementing Biome linter, Jest, and Maestro E2E testing, ensuring production- grade reliability across 150+ TypeScript files (36k LoC).
- Collaborated across full stack — worked 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.
Apr 2025 — Apr 2026•1 year
React NativeExpoNOSTR
Fullstack Developer
Mar 2025 — Apr 2025•1 month
- Development and maintenance of the main interactive mapping platform using Next.js
- Implementation of new features to enhance the user experience of the online platform
- Resolution of bugs and technical issues to ensure the proper functioning of the platform
- Refactoring of existing components and code to improve performance and maintainability
NextJSPostgresSQLAPIs
Cityopensource
Cityopensource enables everyone to carry out collaborative projects storytelling by locating multimedia content, photos, video and audio, on interactive maps.
Naples, Campania, Italy•Remote
Fullstack Developer
- Development and maintenance of the main interactive mapping platform using Next.js
- Implementation of new features to enhance the user experience of the online platform
- Resolution of bugs and technical issues to ensure the proper functioning of the platform
- Refactoring of existing components and code to improve performance and maintainability
Mar 2025 — Apr 2025•1 month
NextJSPostgresSQLAPIs
Frontend Developer
Aug 2023 — Jul 2024•11 months
- Developed IoT device management dashboard UI for Tecnoalarm using Angular, implementing designs from Figma specifications
- Created new customer portal for Illumia energy company with React, enhancing user experience for account management
- Implemented responsive and intuitive interfaces following design system guidelines
- Collaborated with backend teams to integrate API endpoints for IoT device data
- Applied performance optimization techniques to improve application responsivenes
NextJSViteJSAngularAPIs
Enhancers - Tinexta Group
Enhancers - From raw pixels into finished products. We make digital products that really matter.
Turin, Piedmont, Italy•Remote
Frontend Developer
- Developed IoT device management dashboard UI for Tecnoalarm using Angular, implementing designs from Figma specifications
- Created new customer portal for Illumia energy company with React, enhancing user experience for account management
- Implemented responsive and intuitive interfaces following design system guidelines
- Collaborated with backend teams to integrate API endpoints for IoT device data
- Applied performance optimization techniques to improve application responsivenes
Aug 2023 — Jul 2024•11 months
NextJSViteJSAngularAPIs
Frontend Developer
Mar 2023 — Dec 2023•9 months
- Built projects in React and NextJS
- Project maintenance for clients• Built projects in React and NextJS
- Project maintenance for clients
NextJSSEOReact
Develops
Develops is your on-demand development team. Get the best out of your startup budget by working with talents from all over the world with our supervision.
Lugano, Tissen, Switzerland•Remote
Frontend Developer
- Built projects in React and NextJS
- Project maintenance for clients• Built projects in React and NextJS
- Project maintenance for clients
Mar 2023 — Dec 2023•9 months
NextJSSEOReact
Fullstack Developer
May 2023 — Aug 2023•3 months
- Designed and built a real-time notification system using Socket.io and NestJS
- Created a microservice architecture connecting Express.js backend with Angular frontend
- Developed real-time lead tracking functionality that displayed Facebook conversions via toast notifications• Designed and built a real-time notification system using Socket.io and NestJS
- Created a microservice architecture connecting Express.js backend with Angular frontend
- Developed real-time lead tracking functionality that displayed Facebook conversions via toast notifications
NestJSExpress.jsAngularSocket.ioMicroservices
Frontend Developer
Jan 2023 — May 2023•4 months
- Created responsive landing pages for TIM ad campaigns
- Implemented key features for the company's backoffice CRM solution using Angular
- Main company website maintenance
ReactJSExpress.jsAngularCMS
Entiende
Entiende S.r.l. provides communication services and manages data to build a strong and innovative network based on respect and professionalism.
Naples, Campania, Italy•Remote
Fullstack Developer
- Designed and built a real-time notification system using Socket.io and NestJS
- Created a microservice architecture connecting Express.js backend with Angular frontend
- Developed real-time lead tracking functionality that displayed Facebook conversions via toast notifications• Designed and built a real-time notification system using Socket.io and NestJS
- Created a microservice architecture connecting Express.js backend with Angular frontend
- Developed real-time lead tracking functionality that displayed Facebook conversions via toast notifications
May 2023 — Aug 2023•3 months
NestJSExpress.jsAngularSocket.ioMicroservices
Frontend Developer
- Created responsive landing pages for TIM ad campaigns
- Implemented key features for the company's backoffice CRM solution using Angular
- Main company website maintenance
Jan 2023 — May 2023•4 months
ReactJSExpress.jsAngularCMS
Portfolio
This covers various technologies; visitors can explore or access the source code on Github
Expensify
148
Comprehensive personal finance tracker built with React Native & Expo in 24 hours! 📱
ExpoReact NatiueSQLite
Task Manager Fullstack
80
A task management app built with cutting-edge tech for fluid user experience 🚀
ViteJSExpressJSSQLiteTanstack Query & Router
Coffee Connoisseur
101
Geolocation based search for coffee shops 🌍
NextJSFoursquareUnsplashAirtable
Blog
Occasional posts on interesting web development and insights
Dear mom...
67
Letter to my mother
❤️
What a single day with a new laptop can do to a man
125
One day, one laptop, one big fix 🛠️
LinuxOpen SourceHardwareTuxedo
My Mad Adventure at the HackForHire Hackathon
100
From Zero to Hero (and Hired!) in 24 Hours 🕓
HackathonCareerExperienceDev