Cristian
Full-stack
About me
I'm , known online as , a from . I work mainly with , , , , and , building web and mobile products, APIs and integration-heavy features. Professionally, I have worked on application-layer integrations involving , , and wallet/payment infrastructure, primarily by integrating existing SDKs, APIs and core libraries into production applications. Outside client work, I build projects around local-first software, peer-to-peer systems, developer tooling and . I enjoy working across product, architecture, debugging and integration, especially when a project involves unusual technical constraints.
Skills & Tech Stack
Technologies I use regularly across work
Frontend & Mobile
TypeScript
React
NextJS
Tailwind CSS
Expo / RN
Backend & Data
Bun JS
NestJS
PostgreSQL
SQLite
REST APIs
WebSockets
Tools
Git
Vercel
Supabase
Docker
Bash
GitHub Actions
Career History
My professional experience across
Full-stack Developer
Apr 2026 — Present•4 months
- Contributing to application and integration-layer work for digital payment products across React/TypeScript frontends and Node.js backend integrations.
- Implementing payment and wallet flows using existing SDKs, APIs and provider infrastructure, with a focus on transaction state, error handling and integration reliability.
- Developed payment UI and backend integrations for Telegram Mini Apps and product prototypes.
- Worked with non-custodial wallet flows and provider APIs, supporting research and prototyping around Bitcoin, Lightning and digital-asset payments within the wider engineering team.
TypeScriptReactNode.jsREST APIsPayment IntegrationsWallet Integrations
Blox Space
Blox Space is a Bitcoin-focused hub in the heart of Turin connecting developers, startups, and companies building on Bitcoin. The space hosts a specialized coworking and offices for builders working on financial infrastructure, while organizing meetups, workshops, hackathons, and industry events that foster collaboration within the global Bitcoin ecosystem.
Turin, Piedmont, Italy•Hybrid
Full-stack Developer
- Contributing to application and integration-layer work for digital payment products across React/TypeScript frontends and Node.js backend integrations.
- Implementing payment and wallet flows using existing SDKs, APIs and provider infrastructure, with a focus on transaction state, error handling and integration reliability.
- Developed payment UI and backend integrations for Telegram Mini Apps and product prototypes.
- Worked with non-custodial wallet flows and provider APIs, supporting research and prototyping around Bitcoin, Lightning and digital-asset payments within the wider engineering team.
Apr 2026 — Present•4 months
TypeScriptReactNode.jsREST APIsPayment IntegrationsWallet Integrations
React Native Engineer
Apr 2025 — Apr 2026•1 year
- Worked on the React Native + Expo application layer of Portal App, integrating a Rust core library through UniFFI bindings and consuming it from the mobile app as a shared singleton service.
- Built and maintained onboarding, AppLock, cloud backup, profile and identity synchronization, and offline-first application flows.
- Integrated Nostr features including nsec handling, NIP-05 resolution and profile synchronization.
- Integrated Bitcoin/Lightning wallet functionality exposed by existing SDKs and core libraries, including Breez SDK, NWC, QR/NFC and payment-status synchronization.
- Worked on app-side secure storage, biometrics, SQLite/Drizzle flows, Jest/Maestro testing and debugging of lifecycle, state and migration issues.
React NativeExpoTypeScriptNostrSQLiteE2E Testing
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
- Worked on the React Native + Expo application layer of Portal App, integrating a Rust core library through UniFFI bindings and consuming it from the mobile app as a shared singleton service.
- Built and maintained onboarding, AppLock, cloud backup, profile and identity synchronization, and offline-first application flows.
- Integrated Nostr features including nsec handling, NIP-05 resolution and profile synchronization.
- Integrated Bitcoin/Lightning wallet functionality exposed by existing SDKs and core libraries, including Breez SDK, NWC, QR/NFC and payment-status synchronization.
- Worked on app-side secure storage, biometrics, SQLite/Drizzle flows, Jest/Maestro testing and debugging of lifecycle, state and migration issues.
Apr 2025 — Apr 2026•1 year
React NativeExpoTypeScriptNostrSQLiteE2E Testing
Full-stack 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
Full-stack 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
Full-stack 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
Full-stack 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
A I build and maintain, with source code and live implementations where available
MinePanel
1
Self-hosted Minecraft server management platform focused on Docker lifecycle, real-time state and safe backend operations. ⛏️
NestJSDockerWebSocketsBun
PearLift
18
A local-first workout tracker with peer-to-peer sync, no accounts, no servers. 🍐
ExpoSQLiteHolepunchF-Droid
Blurkit
31
Universal image placeholder generation across Node, Deno, browser, edge, Cloudflare, and WASM runtimes. 🖼️
BlurHashThumbHashWASM
Blog
Occasional posts on interesting development and
Preparing for Mythos
35
A Sunday night with an open model showed me how much the cyber floor has moved. 🤖
AICybersecurityAgentic Workflows
Dear mom...
86
Letter to my mother
❤️
What a single day with a new laptop can do to a man
164
One day, one laptop, one big fix 🛠️
LinuxOpen SourceHardwareTuxedo