Full Stack & AI Engineer
Full-stack engineer with 15+ years shipping modern web apps, APIs, and AI-powered platforms — from e-commerce storefronts to secure enterprise systems.
About
I’m Gabriel — a full-stack engineer based in the United States. I build modern web applications, backend systems, and API-driven platforms with JavaScript, TypeScript, React, Vue, Angular, Node.js, Python, and databases such as PostgreSQL, MongoDB, and MySQL.
I’ve shipped work that needs secure transactions, authentication, data integrity, and complex business logic — e-commerce, healthcare, financial solutions, and enterprise apps. That includes REST APIs, backend services, and integrations with third-party and distributed systems.
Recently I’ve been building AI-powered features and security-conscious architectures: LLM integrations, semantic search, recommendations, and systems where access control and data consistency matter. I take products from interface to API to cloud (AWS, Supabase) and focus on clean, maintainable code that solves a real business problem.
My services
End-to-end web apps — React, Next.js, Angular, and Vue on the front; Node.js, Python, PHP/Laravel, and Java/Spring Boot on the back — with auth, APIs, and databases designed to scale.
Product listing, search, recommendations, checkout, and reservation flows. Shopify, Magento, Big-commerce, WooCommerce, and other e-commerce platforms. Algolia, GraphQL, analytics, and A/B testing wired in so the storefront actually converts.
OpenAI, LangChain, semantic search, personalized recommendations, and AI-assisted workflows that cut manual work and make product surfaces smarter.
REST and GraphQL services, Stripe/PayPal billing, Row-Level Security, and integrations for healthcare, finance, and other data-sensitive environments.
SEO, Core Web Vitals, analytics instrumentation, accessibility, and iterative UX — so the product stays fast, measurable, and maintainable after launch.
Skills
React / Next.js
Angular
TypeScript
JavaScript
Vue.js / Nuxt.js
Tailwind CSS
Material UI
Bootstrap
Node.js / Express / Nest
Python / FastAPI
PHP / Laravel
C#
Java / Spring Boot
REST & GraphQL
Hasura / Apollo
SQL · 10 yrs
PostgreSQL
MongoDB
MySQL
Supabase
Firebase
AWS
OpenAI / LLMs
LangChain
Algolia
Stripe / PayPal
Analytics / A/B testingProjects
1 / 5
Storefront rebuild
Built and maintained a modern e-commerce storefront in React, Next.js, TypeScript, and Tailwind. Migrated the legacy Vue/Nuxt front end, added Algolia search, Hasura GraphQL inventory, reservation/checkout flows, GrowthBook experiments, Google Analytics, and OpenAI-enhanced search.
1 / 3
Financial Reporting platform
Contributed to a reporting management platform: extracting daily prices from uploaded Excel files and generating tables and charts from the data with Python, FastAPI, PostgreSQL, Pandas, and React.
1 / 3
Admin screen POC
Led an Angular POC to replace OutSystems admin screens with a microservices-backed UI. Used AWS Amplify for backend services and deploys, shipped against existing designs, and added AI analytics plus CodeWhisperer to speed up the workflow.
1 / 3
Customized e-commerce stores for Giftly Inc
Custom Shopify storefronts — themes, reusable sections, app/payment integrations, and API work for products, orders, and inventory. Focused on performance, mobile, SEO, and checkout.
Book a call
A focused 30-minute discovery call — goals, constraints, timeline, and whether we’re a fit. Available Eastern Time, 9 AM – 5 PM.
Schedule a callWhat you get
Contact
Reach me directly and I’ll reply within one business day.