Joaquín Martínez

Available

Mobile Developer (React Native) | TypeScript | Full Stack Developer

React Native · TypeScript · Mobile Development · iOS & Android · Santa Fe, Argentina

LinkedInmartinezjoaquinit@gmail.comDescargar CV / Download CV

About me

Full Stack Developer specialized in Mobile Development with React Native, focused on building cross-platform iOS and Android applications with TypeScript.

I work on the design and development of B2B2C platforms, booking systems and scalable mobile applications, participating in the full product lifecycle: architecture, development, testing, deployment and maintenance.

I currently work as a freelancer developing web and mobile applications, integrating authentication, relational databases, push notifications, REST APIs and monetization systems.

Experience

Full Stack Developer

Freelance

January 2022 — Present

Custom technology solutions for clients and digital ventures.

  • —Design and implementation of full-stack architectures for web and mobile applications.
  • —Development of B2B2C platforms and management systems.
  • —Integration of external services and production deployment.

Software Development Degree (Tecnicatura Superior)

Instituto Superior de Profesorado N°20 "Senador Néstor Juan Zamaro"

2019

Technical training focused on software development, databases and application architecture fundamentals.

Projects

Pampero - main screen

Pampero

React NativeExpoTypeScriptSupabase

Environmental monitoring mobile app that centralizes radar, satellite imagery, short-term weather alerts, seismic activity, fire hotspots and hydrological data from official and third-party sources in one place.

  • ·Integrates multiple public data sources: SMN, INA, NASA FIRMS, USGS and NOAA/STAR
  • ·Interactive maps with MapLibre for earthquakes, fires and hydrological stations, with disk-persisted stale-while-revalidate caching
  • ·Radar and satellite sequence player with on-image drawing, adjustable playback speed and GIF export
  • ·Remote configuration via Supabase to toggle sections and ads without shipping a new release
  • ·Monetization with Google AdMob (banner and interstitial) and a Premium subscription via RevenueCat
Visit site

Realistic Electrical Panel

In development
React NativeExpoTypeScriptSupabase

Cross-platform mobile app for designing realistic electrical panels. Lets users create professional diagrams with real components, connect nodes with automatic cable routing, and manage multi-panel projects.

  • ·Orthogonal routing engine using Dijkstra with a penalty for direction changes
  • ·Interactive canvas with zoom, pan and simultaneous gestures via Skia + Reanimated
  • ·Local persistence per project and page with AsyncStorage
  • ·Layer system: background / mount / component for ordered rendering
  • ·Premium subscription model with RevenueCat (Android)

Reservame!

In development
Next.jsTypeScriptTailwindSupabase

B2B2C real-time appointment management platform. Lets businesses manage bookings, employees and clients with role-based admin panels.

  • ·Supabase + PostgreSQL with 20+ entities
  • ·Resend for transactional emails
  • ·Role-based authentication and authorization
  • ·Email password recovery
  • ·Real-time bookings
  • ·Ticket-based support system
White Sound Machine - main screen

White Sound Machine

Unpublished
React NativeExpoAndroidiOS

Minimalist mobile app to improve rest and focus. Emulates a professional white-noise machine that blocks external distractions.

Bruno Beltran landing page screenshot

Bruno Beltran Landing Page

Next.jsTypeScriptTailwindCloudflare

High-performance website for a personal brand. Focused on load speed, SEO and modern UX with a scalable architecture.

  • ·Deployed on Cloudflare Pages with OpenNext
  • ·Storage with Cloudflare R2
Visit site
Passport GO! app screenshot

Passport GO!

React NativeExpoAndroidiOSNode.js

A complete travel guide for global explorers. Instant lookup of visa requirements and entry rules for passports from around the world.

  • ·Node.js automation script for web scraping official sources
  • ·Cross-platform deployment with the Expo ecosystem
Visit site

Blog

View all →
AlgorithmsReact NativeMobile

How do you connect point A to point B?

Electrical Panel app: how we adapted Dijkstra’s algorithm to route electrical connections around obstacles while minimizing direction changes.