gguilhermeft.com
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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
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