gguilhermeft.com
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Available · 2026
builder.

More sales.Less manualwork.

You've already tried loose AI: a ChatGPT here, a bot that breaks there. I get it actually running in support, sales and billing, in production and without hallucinating in front of the customer. Seven years shipping software, from global generative AI (Veritone Voice 2.0) to enterprise healthcare in the US.

Selected work

Case studies

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How I can help

Services

Four offerings. Fixed scope, direct comms, code that keeps working after I leave.

00

AI diagnosis + pilot

You have a bottleneck: slow WhatsApp support, manual triage, chasing payments by hand. In 1 to 2 weeks I deliver a pilot actually running on a slice of the process, so you see it working before investing big. Fixed price, no 20-page proposal.

Duration
1 to 2 weeks
01

AI feature in production

For B2B SaaS teams running in production that want to ship an AI feature — semantic search, content generation, automated classification or an agent for an internal workflow. Delivery: feature in production with observability, automated evals and inference cost under control.

Duration
6 weeks
02

AI product from scratch

For technical founders or teams building a new product with AI at the core. I act as your interim founding engineer — discovery, architecture, full-stack build (frontend, backend, AI, infra), deploy and 30 days of support, with handover docs for the next developer.

Duration
10 weeks
03

White-label AI delivery for agencies

You have the client and the brief. I deliver the AI part under your brand, on your deadline. You sell, I ship.

04

Fractional Tech Lead

For Seed–A startups with 2–3 junior devs that need senior leadership without a full-time hire. 40–60h/month on architecture, code review, critical decisions and tech roadmap, with team mentorship and leadership on AI, observability and scaling decisions.

Duration
3 months minimum
Next step

Got a project?

Send me the bottleneck: the AI request that stalled, the feature no one on the team can ship, the manual process eating your time. Within 24h I tell you if it's doable, how I'd do it and what it costs. Straight up, no 20-page proposal.

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