AI that reaches production, not just demos.
I'm Marco Lee, an Applied AI Engineer with 12+ years taking software to production. I design, build and run AI assistants, automations and product features for your business, in English or Spanish, on US hours.
Guatemala (UTC-6) · English & Spanish · Remote
Bright Smile Dental
Example · AI assistant · online
Appointment confirmed
Dental cleaning · Tomorrow, 3:30 pm
Ana López · reminder 2 h before
Added to the clinic's Google Calendar
Three ways to start
Every engagement starts with a free 20-minute call.
AI Implementation Sprint
Find where AI pays off in your business, then ship a working pilot on your real tools and data.
See detailsfrom US$1,500
1-week diagnostic + pilot
WhatsApp AI Assistant
An assistant that answers, qualifies leads and books appointments on WhatsApp, in Spanish and English.
See detailsfrom US$750
one-time setup · monthly care quoted separately
Fractional AI Engineer
A senior engineer embedded in your team, part-time, to ship AI features in your stack and on your hours.
See detailsUS$2,500/mo
about 8–10 hours a week
I work inside your team, not from a distance
The forward-deployed way: in your meetings, your tools and your codebase, responsible for the result and not just the ticket.
Understand
I talk to the people doing the work and map where time and money leak.
Build
A pilot on your real tools and data, not a slide deck.
Measure
We agree on the success metric up front and check the pilot against it.
Run
Documentation and handover, plus monthly operation and improvements if you want them.
What I've built and run
Twelve years of production software, and the products I build and operate myself.
Tech Lead, Guatemala.com
2020–2026
Led engineering for a multi-brand media network with 5M+ monthly users: moved the backend from monolithic WordPress to headless WordPress + NestJS APIs on auto-scaling AWS, and led the remote team that shipped on it.
Read the case study
Why work with me
I've spent more than twelve years shipping software that people use every day, including five as Tech Lead of a media network with millions of monthly readers. I know what breaks in production and how to explain trade-offs to owners who aren't technical.
I build AI features and agents in my own products, use coding agents in my daily engineering, and teach agent development at agente-ia.dev. I'm now taking on my first client AI projects.
Questions
How much does it cost?
AI implementation sprint from US$1,500, WhatsApp assistant from US$750, fractional engineer US$2,500 a month. We scope the exact work in a free 20-minute call — each service page has the details.
Have you done this for other companies?
I've taken software to production for 12+ years, including leading engineering for a network with 5M+ monthly users, and I build AI features in my own products. I'm starting my first client AI projects now.
What happens to our data?
It stays in your accounts. I use providers with business terms and we decide together which data the AI can see.
Which time zone do you work in?
Guatemala (UTC-6, no daylight saving time), with full overlap with US working hours.
Do you work with businesses in Guatemala and Latin America?
Yes, in Spanish, and I can quote in quetzales.
Will you sign an NDA?
Yes.
Tell me what you want to automate.
A 20-minute call is enough to tell whether AI makes sense for your case and what it would take. In English or Spanish.
I reply within 24 hours.
Guatemala (UTC-6): full overlap with US working hours.