Xavier Perez

You know AI can transform your product. You just need the right architect.

Maybe you've experimented with ChatGPT wrappers. Maybe your team has prototyped something promising but can't get it to production. Or maybe you're starting fresh and want AI built in from the ground up.

You've done the hard part: you see the opportunity. Now you need someone who can turn that vision into a real product — someone who understands both the AI layer and the full application stack underneath it.

I design and build AI-powered applications end-to-end. Agentic workflows, model orchestration, tool integration, and the React + Node.js + AWS infrastructure to support it all.

That's where I come in.

I help teams architect and ship AI-powered applications — from intelligent features to full agentic systems — built on 9 years of production fullstack experience

I'm Xavier Perez — an AI Solutions Architect with 9 years of fullstack development experience in React, TypeScript, Node.js, and AWS.

I've spent those years freelancing and helping teams ship real products. Now I bring that same delivery mindset to AI-powered applications: agentic systems, model orchestration, MCP integrations, and production-grade AI architecture.

28+ projects delivered with 100% job success on Upwork. Top Rated freelancer. The track record speaks for itself.

Since 2016 I have been helping startups and companies ship software that matters

28

Projects completed

9000+

Worked hours

100%

Job Success

5

Years Top Rated freelancer

Just like the last time we engaged with him, Xavier helped us out reliably and efficiently. He specifically supported us in improving our unit and integration tests integrating emulators for our backend services into the test process.-- Johannes Stiehler

Xavier is a talented frontend developer, who supported our project for months and took our ideas from a google doc to an actual product/prototype. Xavier is fun to work with, a great team player and very accountable. We are a remote team, and Xavier just fit right into our team culture.-- Karan Dhingra

Xavier is a talented software engineer who took our React/Redux project from 0 to 100 in record time. Xavier was able to quickly and expertly solve every problem we came across throughout the development process, which has resulted in a stellar end product. He has an eye for design and UX that sped up development significantly.-- Jake Glass

Xavier was an invaluable part of our team, using his React expertise to bring pixel perfect screens to life as promised. Of all of the React developers we've worked with - on Upwork and otherwise - Xavier was one of the very top engineers with whom we've been lucky enough to have on our team.-- Alli McKee

Xavier is not a typical fly-by freelancer, his commitment to success of our project was amazing. Xavier's technical skills especially in React application development can be compared to a world class developer. His methodical approach to writing code resulted in a easily maintainable code that my company can continue to use it as an asset going forward. Xavier's work ethics is one of the best I have seen across all kinds of staffing models, he is very direct and gives honest feedback on ideas that he thinks will work or not work.-- Sanjay Mahadi

Xavier was an outstanding addition to the team. Easy to work with, great communication. We asked Xavier to help us with our complex Node.js web app working with React, Relay, and GraphQL. He ramped up on our application very quickly and immediately added value to the project... It was as if he had been a member of the team all along. Worked efficiently and followed development processes like a true professional. We would definitely hire Xavier again in the future-- Adam Tratt

Building AI into a product is a high-stakes decision.

I understand the pressure — the budget, the timeline, the need to get it right the first time. I treat every project like my own and bring the same care and intensity that earned me 100% job success across 28 projects.

Whether you're adding AI to an existing product or building something new from scratch, I'll be with you from architecture to deployment.

Available 8am to 7pm EST, Monday to Friday.

Good AI architecture starts with clear communication. Before writing a single line of code, I make sure we align on what the AI should do, how it fits into your product, and what success looks like.

I work iteratively — shipping working software early and often so you can see progress, give feedback, and course-correct before it gets expensive to change direction.

Schedule a meeting and let's talk about what AI can do for your product.

Ready to build AI into your product?

Schedule a meeting