Open to opportunities

ruben hernandez alvarado

@rubenhernandez

Message

Frontend developer shipping AI-powered tools and fast, conversion-focused React/Next.js products.

Mexico

Message

What I'm looking for

I’m looking to build production-grade frontend products with React/Next.js, focusing on clean UI architecture, performance, accessibility, and testing. I want to ship measurable improvements—conversion, speed, and reliability—while working with thoughtful engineering teams.

I'm a Frontend Developer with 3+ years building production web applications using React, Next.js 15, and TypeScript. I've shipped AI-powered internal tools, conversion-focused marketing sites, and full-stack dashboards for real clients, including an OCR extraction pipeline that replaced a fully manual workflow and reusable component systems built to scale across dozens of pages.

I care about clean architecture, performance, and measurable impact: type-safe systems, optimized Core Web Vitals, and accessible UI backed by real test coverage. I own projects end-to-end, from Figma to deployment, and I'm especially drawn to building AI-integrated products that solve real operational problems.

Experience

Work history, roles, and key accomplishments

Current

Software Developer (Internal Tools)

Current

Astro HeadQuarters

Jun 2025 - Present (1 year 1 month)

Engineered a multi-strategy PDF extraction engine using Mistral AI OCR and lab-specific parsing to support diverse cannabis COA report formats. Built a responsive React/Next.js dashboard with confidence scoring and CSV export, replacing a fully manual data entry workflow.

React Next.js TypeScript Mistral AI PostgreSQL Async Processing Queues Vitest CI CD

Current

Freelance Frontend Developer

Current

Code42MX

Jun 2024 - Present (2 years 1 month)

Built conversion-focused Next.js marketing and full-page experiences using React Server Components to reduce client-side JavaScript and improve SEO performance. Delivered additional client work including a Tailwind/Astro corporate site, a WhatsApp lead-generation system using wa.me pre-filled messages, and a React/Vite SPA with performance improvements up to 40% faster load and 90+ Lighthouse scor

Next.js React TypeScript Astro Tailwind Jest Playwright

Frontend Developer Intern

Itransition

Jan 2025 - Apr 2025 (3 months)

Spearheaded a production-ready invoicing platform using React and TypeScript with dynamic item form arrays and real-time tax/total calculations. Centralized state with Zustand to decouple UI from business logic and improve performance.