Full-stack engineer — La Plata, AR
Open to work

I build the entire thing — data model, API surface, interface, and the design system that keeps it coherent six months later.

Multi-tenant SaaS, real-time AI pipelines, and the internal tooling that makes shipping boring. Everything listed here is code I actually wrote.

Selected projectsjsantarc@gmail.com
5
Years shipping
Since 2021
30+
Products delivered
Zero to production
10
Engineers led
Tech lead @ Conexa
3
Platforms of my own
All in production
01

Selected projects

3 of 15

Three platforms I own outright — architecture, backend, interface and everything between — plus two lab projects where the same discipline meets a live audience. All of them shipped, with real users on them.

01

TripBox

production

Two-sided travel platform: travellers plan multi-destination trips with AI-generated itineraries and multi-currency settlement, agencies run branded client operations on the same engine.

  • Next.js
  • React 19
  • TypeScript
  • Supabase
  • Claude AI
  • Mapbox GL
02

IRLBox

production

Multi-tenant SaaS giving each streamer a branded space, OBS-ready widgets, and an AI pipeline that transcribes, titles and emotionally scores every message that comes in.

  • Next.js 16
  • React 19
  • TypeScript
  • Supabase
  • OpenAI
  • Remotion
03

CannaHub

production

Multi-tenant B2B ecosystem of six applications covering cultivation, IoT monitoring, medical records, commerce and compliance for 6+ organisations in Argentina.

  • Next.js 16
  • React Native
  • TypeScript
  • Medusa.js
  • Strapi
  • Tailwind CSS
All projects — client, tooling and lab
02

Experience

5 years

Scroll — each role opens as it comes into focus. Click a row to jump.

  1. Lead frontend on client platforms that carry real money and real crowds — ticketing at event scale, invoice factoring, native mobile.

    Backstage
    Led development of a white-label ticketing platform for massive events — multi-tenant branding, seat inventory and checkout under load.
    Vabble
    Built on the platform that turns invoices into immediate liquidity, matching company receivables against third-party investors.
    Nordic Flow
    Led the redesign and ongoing maintenance of a React Native app shipping to both iOS and Android.
    PadelGo
    Delivered the frontend for a padel club and tournament management platform — bookings, brackets, club operations.
    RemoteReactNext.jsReact NativeTypeScriptTailwind CSS
Education

Computer Engineering

Universidad Nacional de La Plata — 2018 — 2021

Languages

Spanish (Native) · English (Professional)

4 roles · remote since day one

03

Stack

46 entries
Languages
TypeScriptJavaScriptLuauSQLSwiftHTMLCSS
Frontend
ReactNext.jsReact NativeTailwind CSSMotionRadix UIThree.jsZustandTanStack Query
Backend
Node.jsNestJSExpressPostgreSQLSupabaseMongoDBFirebaseMedusa.jsRESTGraphQL
AI / ML
ClaudeOpenAIWhisperHugging FaceMCPPrompt pipelines
Ops & tooling
VercelGitHub ActionsDockerUpstash RedisSentryPlaywrightVitestRojoLune
Practice
Design systemsMulti-tenant architectureCode reviewTechnical hiringTeam leadership
04

Contact

Open to work

If you are building something that needs to actually work — send the problem, not the job description.

jsantarc@gmail.com
GitHubLinkedInEmail