Lex Santiago

Engineer / Creator

Building AI that handles the boring stuff.

See My Work Let's Talk
💻 📸
Currently accepting 2 new clients for Q4 2025

Projects

"How can I make this easier?"

AI Receptionist for Small Businesses

AI Receptionist for Small Businesses

Saves time and missed calls. 24/7 AI phone system that handles customer inquiries, schedules appointments, and provides information so business owners can focus on their core operations, not their phones.

FastAPI Twilio OpenAI GPT RAG Redis PostgreSQL
Case Study
DonXera Website Demo

DonXera Website Demo

Built for my cousin's resell store in Royal Palm Beach, Florida. Real-time inventory tracking synced with SAP ARP and Lightspeed POS. Handles 140+ SKUs with smart brand search and automated reconciliation across multiple locations at 10131 Southern Blvd, Royal Palm Beach, FL 33411.

Python Flask SAP ARP Google Sheets API Lightspeed API PostgreSQL Docker
View Demo

What Clients Say

★★★★★

"Alex built me an AI receptionist that actually works. I can focus on my clients instead of answering the phone all day. It's like having an extra pair of hands."

Maria Torres

Owner, Bella Vista Salon

★★★★★

"He explained everything in plain English — no tech jargon. The AI handles our after-hours calls perfectly. Simple solution, big impact."

David Kim

Operations Manager, Kim's HVAC Services

★★★★★

"We went from chaotic spreadsheets to a clean system that just works. Alexander walked me through every step. Real talk: this saved us hours every week."

Alex Martinez

Store Manager, DonXEra Streetwear

Hey, I'm Lex

I'm a college engineer who builds systems that think, so people don't have to stress.

I grew up in a Spanglish household where clear communication wasn't always easy — now I build tech that's simple, accessible, and human.

Learning from NJIT mentors Mark Chiusano and Keith Williams, I'm building tools that connect people and ideas.

Expertise

🚀 FastAPI
🐍 Python
🤖 OpenAI
📞 Twilio
🐳 Docker

Let's Talk

I'd love to hear what you're building.