Open to opportunities

Oscar Ruiz

@oscarruiz

Message

I build React and AI-powered SaaS products from concept to production.

Mexico

Message

What I'm looking for

I'm looking to build impactful products where I can own frontend or full-stack delivery, simplify complex requirements, and apply React, Next.js, TypeScript, and AI tools to improve product outcomes.

I built BuildMyRig AI from scratch, an AI-powered PC builder SaaS with AI build generation, FPS estimation, authentication, dashboards, admin workflows, SEO pages, and Amazon affiliate integration.

At Apex Systems, I helped shape the frontend architecture for a greenfield healthcare platform and introduced Cypress testing practices across an enterprise team. I also delivered customer-facing e-commerce experiences for Duluth Trading Company across search, product pages, cart, checkout, accounts, navigation, and promotions.

Previously at Enroute Systems, I built internal marketing tools and a form builder for 8x8 Cloud Communications Platform using React, GraphQL, and Node.js.

I enjoy turning complex requirements into maintainable systems, choosing simple solutions with meaningful product impact, and using AI tools to accelerate debugging, refactoring, and iteration.

Experience

Work history, roles, and key accomplishments

Current

Independent Full Stack Engineer

Current

BuildMyRig AI

Jan 2025 - Present (1 year 7 months)

Designed and developed an AI-powered SaaS product from scratch using Next.js, TypeScript, Prisma, PostgreSQL, OpenAI API, and Tailwind CSS. Built core product flows including AI Build Generator, FPS Estimator, authentication, user dashboard, admin panel, programmatic SEO pages, and Amazon affiliate integration.

Next.js TypeScript Prisma PostgreSQL OpenAI API Tailwind AI assisted Development SEO

Software Engineer

Apex Systems

Jan 2022 - Dec 2026 (4 years 11 months)

Joined a greenfield healthcare platform from day one and helped build the frontend architecture using React, TypeScript, Material UI, React Context, and custom hooks. Developed customer-facing e-commerce features for Duluth Trading Company across Home, Search, PLP, PDP, Cart, Checkout, Account/Login, Navigation/Header, and Promotions.

React TypeScript Material UI Cypress Frontend Architecture Performance Optimization

Front End Developer

Enroute Systems

Jan 2021 - Dec 2022 (1 year 11 months)

Developed internal marketing tools and a form builder for 8x8 using React, GraphQL, and Node.js, enabling marketing teams to create and manage campaign landing page content. Built reusable frontend components and integration flows that improved consistency across internal tools.

React GraphQL Node Frontend Development