Profile

Javier Goldschmidt

I'm a developer based in Buenos Aires, Argentina. I have 12 years of experience building diverse solutions, ranging from video games in Unity to complex web platforms. My work sits at the intersection of code and product design.

Currently, I'm a Full Stack Developer at El Gato y La Caja, where I've spent the last 9 years building the digital infrastructure for its science communication platform. From login systems to analytics dashboards and e-commerce integrations.

I specialize in responsive React frontends and Node, PHP and Python backends. I also have experience developing video games and native mobile applications.

Featured Projects

Open Website

GridX: Platform for Scientists and Investors

Platform for LatAm's largest Biotech Company Builder.

El Gato y La Caja / GridX

Central digital hub for a biotech startup incubator. Institutional Frontend development and platform showcasing startup information to global investors while maintaining update ease for non-technical staff.

  • Architected a scalable Internationalization (i18n) system serving content in English, Spanish, and Portuguese with low latency
  • WordPress-controlled frontend & form builder where admins can route submissions to specific Airtable bases or Emails
  • Implemented video optimization for AI-generated assets
  • Built a dynamic portfolio system managing data for 90+ startups
Next.jsWordPress HeadlessAirtable APIi18n RoutingAI Media
Open Website

Bancantes: Membership Management

Custom membership platform with an automated Inflation Shield and gamification.

El Gato y La Caja

A bespoke membership ecosystem serving 1,500+ monthly subscribers. Unlike standard SaaS tools, this platform was designed to handle the specific economic volatility of the region while keeping users engaged through gamification.

  • Inflation Adjustment Engine: An opt-in system that fetches Consumer Price Index (CPC) data via API and automatically updates subscription values quarterly
  • Unified Payment Orchestration Layer triggering transactions via MercadoPago, PayPal, and CBU (Bank Debit) APIs
  • 3D Avatar Creator: WebGL (Three.js) allowing users to design, download, and share branded digital assets
  • Management of migration and stability for 1,500+ active recurring subscribers
PHPCodeIgniterMercadoPago APICron JobsThree.js
Open Website

Headless Architecture Migration

Transition of the company's main platform to Serverless Next.js.

El Gato y La Caja

Complete migration of El Gato y La Caja from a monolithic WordPress VPS to a Headless architecture. The goal was to maintain the editorial flexibility of WordPress while achieving the performance and security of a static frontend.

  • Migration of 6 years of content to Next.js (App Router) with Incremental Static Regeneration (ISR)
  • Smart Revalidation: Custom plugin that triggers precise cache purges, reducing processing costs
  • Custom Gutenberg blocks that render identical React components in both the Admin and Frontend
  • Reduced hosting costs by offloading media to S3 Buckets via custom-made plugin
Next.jsWordPress HeadlessDockerAWS S3Vercel
Open Website

E-commerce Middleware

Extending Tiendanube with custom inventory logic, programmatic asset generation and better analytics.

El Gato y La Caja

Backend service built to patch the limitations of Tiendanube e-commerce platform. It acts as a bridge between the storefront, the warehouse, and the user.

  • Virtual Bundling: Stock synchronization for compound products in real-time
  • Gift Card system that generates unique codes and renders printable high-res PNGs on the fly
  • Product extension with Pre-sale functionality to allow users to purchase products before they are available
  • Extension of Tiendanube Admin Panel UI using Nexo SDK for seamless staff operations
  • Automation of Ebooks and Giftcards delivery
  • Micro-frontend that embeds real-time Tiendanube products directly inside editorial content to convert free readers into buyers without interrupting their reading experience.
  • Dashboard creation using Looker Studio for staff and authors to visualize sales data and inventory levels unified with Mercadolibre
JavascriptPHPCodeigniterTiendanube APICanvasNexo SDKLooker StudioBigQuery
Open Website

Interactive Data Journalism

Suite of storytelling platforms for complex social datasets.

El Gato y La Caja / Various Clients

Development of multiple data journalism projects. Specialized in transforming datasets (gender gaps, poverty metrics, disability rights) into emotional, accessible web experiences.

ReactFramer MotionD3.jsThree.jsAccessibility (A11y)
Open Website

Cybershock: Future Parkour

Commercial 3D runner released on Steam.

Independent

A high-speed 3D runner built in Unity. Development of core physics, gameplay loops, and UI systems.

  • Launch of a commercial title, managing the full release lifecycle
  • Custom character controller
  • Implementation of aggressive object pooling for performance
  • 3000+ downloads and overwhelmingly positive feedback on Steam
UnityC#Steamworks APIGame Design

Tech Stack

Frontend

React, Next.js, Angular, TypeScript, Tailwind CSS

Backend

Node.js, PHP, Python, MySQL, BigQuery

Game & Mobile

Unity (C#), Android (Kotlin/Java), WebGL

DevOps

Digital Ocean, Google Cloud, AWS, Vercel, Docker, CI/CD, Linux

Experience

2017 — Present

Full Stack Developer

·El Gato y La Caja

Started as the first technical hire. Built the foundational web stack and established engineering practices that scaled with the company. Now leading development of digital infrastructure. Built SSO systems, analytics tools, and e-commerce integrations serving 240k+ users.

2014 — 2017

Web & Mobile Developer

Freelance work building Web and Android applications. Shipped multiple projects and learned the foundations of performance optimization and user experience.

Education

2025 — Present

Bachelor's Degree in Digital Technologies

·Universidad de la Ciudad de Buenos Aires

Backing my practical experience with academic foundations in project management.

2023 — 2024

Applied Data Science & Machine Learning Certification

·Instituto Humai

Focused on the Python ecosystem (Pandas, Scikit-Learn) for the full data lifecycle. This training enhances my capabilities in Business Intelligence and Data Journalism.

2017 — 2020

Virtual Simulator Designer and Developer

·Escuela Da Vinci

Learned to build video games and immersive user experiences that go beyond standard web interfaces.

2016 - 2017

Android Development Nanodegree

·Udacity + Google

Google-certified training in native development. Gained critical insight into device constraints and offline-first principles that I now apply to modern web applications.

Personal Interests

Videogames
Biking & Running
Reading & Philosophy
International Cuisine
Traveling & Urbanism
Trains & Subways
Electronic Music
AI & Machine Learning
Science & Technology

Contact

If you'd like to discuss a project or just say hi: