Lex Gaines AI Engineer. Systems Builder. App Developer.
14 years building production systems at enterprise scale. Now building independently — agentic AI platforms, a fleet of production MCP servers, and a native iPhone app running a real business.
What I Do
From enterprise infrastructure to AI platforms and iPhone apps
I bring the reliability mindset of enterprise engineering to the fast-moving world of AI development — building systems that ship and stay shipped.
Technology
Production Python, AI systems, native iOS, and full-stack engineering backed by 14 years of enterprise infrastructure.
Learn more →Creative Design
Designing interfaces — web dashboards to mobile apps — that turn complex data and AI workflows into clear, usable experiences.
Learn more →Problem Solving
Naming failure modes before they happen — from streaming incident investigations to idempotent mobile approvals.
Learn more →Continuous Learning
From first Swift file to a production iPhone app in months — learning by building against real stakes.
Learn more →AI & LLM Work
Production AI at lexg.ai
Agentic tool orchestration across a fleet of production MCP servers, dual-backend inference that routes between local GPU and cloud APIs, and voice-driven tooling — built with the same rigor I've applied to enterprise systems for over a decade.
Agentic Chat with Two-Phase Tool Routing
A Fleet of Production MCP Servers
Dual-Backend Inference (Local GPU + Cloud)
iPhone App Development
A native iOS app running a real business
Gaines Concierge is my client booking service — and its operator console is a native SwiftUI iPhone app I built end to end. A client books a slot, a push notification lands on my phone, and I approve it straight from the lock screen. The client's confirmation email is on its way before the phone is back in my pocket.
Swift & SwiftUI with APNs push — booking decisions made from the lock screen, verified end to end in production
ConciergeKit Swift package: a typed, versioned API contract with 130 tests that validate the same JSON fixtures the server tests assert against
QR card scanning for client intake, Keychain-backed auth, and an offline-tolerant request queue
Tuesday, October 7
2:04
Gaines Concierge
now
New booking request — Thu 2:00 PM MT. Hold to respond.
Let's Build Something Have a project that needs shipping?
I design, build, and run production software end to end — AI systems, web platforms, and native iPhone apps. Let's talk.