Irvin Giovanni Contreras García

Sr Frontend Developer

I build exceptional web experiences

About

Over 8 years of experience as a Software Developer. Led Frontend development at Kapitalizer, achieving more complete deliverables in each sprint, 25% improvement in web performance, and work automation for different teams within the company.

My main focus these days is building accessible and inclusive products and digital experiences at Kapitalizer. I also enjoy writing about web development and sharing knowledge with the community.

When I'm not coding, I'm usually climbing, playing tennis, hanging out with my wife and daughter, or learning a language on Duolingo.

Experience

  1. Jul 2022 — Sep 2025

    Sr Frontend Developer · Kapitalizer

    • Designed and developed a web platform for credit management, centralizing critical information for different departments
    • Developed an audit log module that helped prevent money misappropriation in the company
    • Reduced loan application response time from 2 weeks to 2 days through automation
    • Optimized landing pages improving performance by 25% and reducing deployment times
    • NextJS
    • NestJS
    • TypeScript
    • PostgreSQL
    • AWS
    • Vercel
  2. Sep 2019 — Jun 2022

    Frontend Developer · Sngular

    • Developed complete responsive flow for credit card applications
    • Implemented component for obtaining device hardware data
    • Developed geolocation solution for credit approval validations
    • Implemented event tagging in Google Analytics
    • React
    • Redux
    • JavaScript
    • Sass
    • Google Analytics
  3. Mar 2018 — Sep 2019

    Frontend Developer · Commonsense People

    • Built complete ecommerce frontend including catalog and purchase flow
    • Developed process manager with Facebook and Google Calendar integrations
    • Implemented Twilio integration with internal Kamino project (CCDS)
    • Developed algorithm for lead ranking validation and processing
    • React
    • JavaScript
    • Twilio
    • Zendesk API
    • Facebook API
  4. Sep 2016 — Sep 2017

    Frontend Developer · We are the robots

    • Developed complete e-learning platform including career details
    • Built administration platform with Single Sign-On
    • React
    • JavaScript
    • SSO

Skills

Languages

JavaScriptTypeScriptHTMLCSSSQLNoSQL

Frameworks

NextJSNestJSReactNodeJSLitElementPolymer2

Databases

MongoDBPostgreSQLMySQL

Web Technologies

ReduxReact QueryTailwindSassShadcnAPIsHooks

Tools

GitGitHubBitbucketFigmaJiraAWSVercelNPM

Practices

AgileScrumSOLIDTDD

Projects

  • Complete web platform for managing devotionals, events and activities for a Christian church. Includes authentication system, user management and event calendar.

    • NextJS
    • NestJS
    • PostgreSQL
    • TypeScript
    • Tailwind
  • SEO-optimized personal blog where I publish Christian devotionals. Implemented with static generation for maximum performance.

    • NextJS
    • React
    • Tailwind
    • MDX

Education

2011 — 2015

Computer Systems Engineering

Instituto Tecnológico de Iztapalapa I

CDMX, México

Designed & Built by Irvin Contreras Inspired by Brittany Chiang's design. Built with Next.js and Tailwind CSS, deployed on Vercel.