Juan Cardenas, Full Stack DeveloperJuan Cardenas

Full-Stack Developer building modern web products with React, TypeScript, and Node.js

I help companies build reliable product experiences, improve development workflows, and ship scalable features across frontend and backend systems.

6+ years experienceReact / TypeScript / Node.js
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Work

Vendoo (YC W22)

Full Stack Developer·Jan 2023 - Present

Cross-posting platform helping resellers list products across multiple marketplaces.

  • Optimized CLI processing time from 40 minutes to 2 minutes using RxJS concurrency
  • Migrated 20,000+ items between user accounts with full data integrity
  • Increased engagement rate by 20% through onboarding flow redesign
  • Integrated Shopify, eBay, Etsy, Vinted, and Stripe APIs
ReactNode.jsTypeScriptDockerKubernetesRxJSFastifyPostgreSQL
Vendoo

Lean Tech

Frontend Developer·Mar 2022 - Jan 2023

Ocean freight management and negotiations platform for shippers and carriers.

  • Built the application from scratch using React ecosystem
  • Implemented style system standardizing buttons, inputs, and typography
  • Developed dashboard and analysis modules using Nivo charts
  • Created application requirements and backlog suggestions
ReactTypeScriptMaterial UIReact QueryJestNivo
SeeFreight

Dichter & Neira

Frontend Developer·Nov 2021 - Mar 2022

Retail backoffice application for managing products, customers, and store synchronization.

  • Developed user interfaces with React and TypeScript
  • Implemented state management using Redux and Redux-Thunk
  • Created unit and integration tests with Jest and React Testing Library
ReactTypeScriptReduxAnt DesignJestReact Testing Library
Backoffice D&N

Previous Experience

Orbit Group

ETL Developer

Oct 2020 - Sep 2021

Built internal tool that reduced development time by 80%

BIGWISE

Full Stack Developer

May 2019 - Oct 2020

Led web development team and modernized company website

Visit website →

About

Full-Stack Developer with 6+ years of experience building web applications. I specialize in React, TypeScript, and Node.js, working across the entire stack from user interfaces to API integrations and database design.

I help companies build reliable product experiences, improve development workflows, and ship scalable features. My work includes building robust interfaces, REST APIs, migration scripts, shared UI systems, and internal tools that improve both user experience and team efficiency.

What I build

  • • E-commerce & marketplace platforms
  • • SaaS applications & internal tools
  • • API integrations (Shopify, Stripe, etc.)
  • • Data migration & processing systems

How I work

  • • Focus on clean, maintainable code
  • • Test-driven development practices
  • • Clear communication with stakeholders
  • • Continuous improvement mindset

Fluent in English and Spanish. Based in Colombia, open to remote opportunities.

Tech Stack

Frontend

ReactTypeScriptJavaScriptNext.jsMaterial UIAnt DesignTailwind CSS

Backend

Node.jsFastifyExpressPostgreSQLREST APIsGraphQL

Tools & Infrastructure

DockerKubernetesGitVercelAWSCI/CD

Let's Connect

I'm open to opportunities where I can contribute across frontend and backend development, especially on modern product teams building practical software.

LinkedInGitHub