Luis Javier Tovar
Luis Javier Tovar Product Engineer · Senior Full-stack Engineer at Valtech

I build web products and e-commerce solutions end to end.

I turn product requirements into production-ready applications across user experience, frontend, backend, data, integrations and deployment. Backed by 8+ years in web development and 5+ years in enterprise e-commerce.

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LinkedIn GitHub Resume Hackernoon
5+ years building enterprise e-commerce Walmart Central America HEB Whirlpool Chanel Explore e-commerce capabilities

How I can help

I build and improve digital products across the full delivery cycle.

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  • End-to-end product development

    From product requirements and user experience to frontend, backend, data, integrations and deployment. I turn ideas into production-ready applications.

  • Web apps and SaaS

    Full-stack applications with authentication, payments, real-time workflows and third-party services built around real product needs.

  • E-commerce solutions

    Storefront, discovery, cart, checkout, fulfillment and post-purchase experiences for modern commerce platforms.

Web products built end to end

Live applications I took from concept to production across interface, backend, data, integrations and deployment.

flavorwise-web-app.vercel.app
Flavorwise product screenshot

Flavorwise

Live SaaS · AI recommendations · Food tech

AI-powered dining assistant that ranks dishes from any menu against your tastes, diet, and allergies, explaining every match and flagging conflicts.

  • Personalized dish rankings from 0 to 100
  • Allergy and dietary conflict detection
  • Menu analysis from photos, PDFs or digital menus
  • Clear match reasons and nutrition estimates
TypeScript Next.js TailwindCSS AI i18n
Open Flavorwise Private repository
listys-web-app.vercel.app
Listys product screenshot

Listys

Live SaaS · OCR · Realtime

Full-stack SaaS app for shopping planning and receipt digitization with OCR. It includes authentication, real-time shopping sessions, base list management, history tracking, and Supabase synchronization.

  • Receipt digitization with OCR
  • Real-time shopping sessions
  • Auth, base lists and history tracking
  • Supabase sync with Edge Functions
TypeScript Next.js Supabase Supabase Edge Functions TailwindCSS Shadcn/UI Zod React Hook Form Zustand Framer Motion OCR
Open Listys Private repository
taggy-5ygezxye9-ljaviertovar-s-team.vercel.app
Taggy product screenshot

Taggy

Live SaaS · Computer vision · Payments

AI image workflow that classifies uploads and generates captions using Google Vision and OpenAI.

  • Image categorization with Google Vision
  • AI caption generation with OpenAI
  • Stripe payments
  • Media pipeline on Cloudinary
Next.js TypeScript Chakra UI Supabase Google Vision API OpenAI Cloudinary Stripe
Open Taggy Private repository
fillbg.vercel.app
FillBG product screenshot

FillBG

Live AI tool · Generative fill

AI image tool that extends backgrounds into aspect ratios adapted for different platforms.

  • Generative background fill
  • Aspect ratios adapted per platform
  • Image transformations on Cloudinary
TypeScript Next.js Cloudinary OpenAI Shadcn/UI TailwindCSS
Open FillBG Code
View all product work

E-commerce solutions across the customer journey

I build and integrate storefront, catalog, cart, checkout, fulfillment and post-purchase flows. Five years of enterprise commerce experience, with deep expertise in VTEX IO.

React Next.js Node.js TypeScript GraphQL VTEX IO
  • Storefront and custom components

    Reusable, accessible UI for landing pages, content sections and merchandising experiences.

  • Catalog and product discovery

    Search, navigation, filters, sorting and product experiences across PLP and PDP.

  • Cart, pricing and promotions

    Product variants, quantities, minicart interactions, coupons and clear pricing feedback.

  • Checkout and payments

    Customer data, address flows, payment methods, validations and order confirmation.

  • Shipping and fulfillment

    Address validation, delivery options, availability, pickup and logistics integrations.

  • Orders and post-purchase

    Order creation and validation, status tracking, documents, notifications and third-party services.

myecomm.com
E-commerce architecture and customer journey built with VTEX

The engineering behind the product

Technical projects and articles that show how I approach architecture, reusable components and application quality.

  • E-commerce Filtering System screenshot

    E-commerce Filtering System

    Real-time search and filtering experience for e-commerce catalogs, with support for multiple product criteria.

    TypeScript Next.js Shadcn/UI
    Live Code
  • Next.js SaaS Starter screenshot

    Next.js SaaS Starter

    Reusable Next.js foundation for SaaS products, including authentication, email, billing and validation.

    Next.js TypeScript Shadcn/ui
    Code Article
  • Next.js issue tracking screenshot

    Next.js issue tracking

    Issue explorer for the Next.js GitHub repository, with cached data fetching powered by TanStack Query.

    React TypeScript TanStack Query
    Live Code
  • Robot Game screenshot

    Robot Game

    Grid-based game where players guide a robot to its target in the fewest possible moves.

    TypeScript React Zustand
    Live Code
View all engineering work

Production experience at enterprise scale

Eight years building web software, including five years delivering and leading enterprise e-commerce work.

View resume

Experience

2018 to present

  1. to Present

    Senior Full-stack Engineer · Valtech Now

    I design and build webhook-based services for e-commerce order validation, document generation and third-party integrations, including a compliance integration with Argentina's ARCA Services. I also deliver full-stack solutions with Next.js, React, Node.js, TypeScript and GraphQL across distributed systems.

  2. to

    Senior Full-stack Developer · Corebiz

    I provided technical leadership for Walmart Central America, guiding developers through complex problems, leading code reviews and managing critical production incidents. I worked with design, business and product teams to align technical solutions with business goals.

  3. to

    Semi-senior Frontend Developer · Corebiz

    I implemented Google Maps in React applications, reducing address-capture errors by 30% and improving on-time deliveries by 20%. I also built accessible React components, VTEX IO storefronts and Node.js middleware for Walmart, HEB and Chanel.

  4. to

    Full-stack Developer · CPA Vision

    I migrated core services from PHP to JavaScript, cutting execution time by 40% and increasing successful responses by 20%. I built REST APIs, Node.js web scrapers, scheduled jobs and email, SMS and WhatsApp notification systems.

Capabilities and stack

Development
JavaScript TypeScript Redux Zustand Prisma Docker Cloudinary Stripe OpenAI Git GitHub GitLab GitHub Actions
Frontend
React Next.js Astro HTML CSS SASS Chakra UI Tailwind CSS Shadcn/UI
Backend
Node.js Express GraphQL PHP MySQL MongoDB Supabase
Testing
React Testing library Jest Puppeteer Playwright Cypress
Design Tools
Figma Adobe XD
Design Experience
UI/UX Design Responsive Design Mobile First Design
Collaboration
Slack Microsoft Teams Jira Notion

Technical writing

Practical articles about frontend and product engineering problems I’ve solved.

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Bring your next product to production.

I help teams turn requirements into production-ready web products and e-commerce solutions. Available for product engineering roles and selected collaborations.

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