About

Andres Bautista

South Florida (remote-friendly)

I run focus4tech—personal AI consulting across strategy and implementation. I help teams ship AI features safely: prompts, RAG, agents, evaluation, and rollout. Not slide decks or transformation theater.

My background is in product and engineering. I build software with modern web stacks (Next.js and TypeScript) and have shipped production systems as a founder and builder—including vive.us (South Florida rental marketplace with production AI search and listing workflows) and U-Bell.com (real estate investor platform). Clients hire me to close the gap between demo and production: data boundaries, evals, guardrails, and handoff docs that engineers actually use.

Based in South Florida (remote-friendly). Available for remote engagements with occasional on-site workshops by arrangement.

Why focus4tech?

The name is intentional: focus on a narrow scope that ships, 4 as in for—technology teams—and techthat works in production. I'm not selling a platform or a long retainer by default. I help you decide clearly, build one thing well, and leave you with something you can run.

Founder products

Platforms I built and operate—scope, AI work, and lessons in more detail than the home page shows.

Founder buildFounder build · South Florida rentals

vive.us — rental marketplace with production AI

Problem: Listing copy and discovery had to scale across MLS-sourced inventory. Renters needed natural-language search; ops needed consistent descriptions for the public site, Facebook Marketplace packs, and other channels—without inventing fees, policies, or contact CTAs.
Approach: Shipped phrase rental search (LLM-ranked matches over published inventory, IP rate limits, graceful degradation). Built MLS description enhancement with channel-specific prompts (Gemini/OpenAI). Wired AI into marketplace posting packs and an agent-facing Miami prompt-library landing page. Grounded prompts with explicit “do not invent” rules for vouchers, HOA, and landlord policies.
Outcome: Live on vive.us: phrase search on home and /rentals, description enhancement in the MLS Supply Engine, marketplace packages, and SEO city pages—alongside Auth0, Prisma/Postgres, and Netlify production deploys.
Lesson: Marketplace AI needs a different contract per surface—ranking vs. copy vs. ops tools—and hard boundaries on what the model is allowed to assert.

Founder buildFounder build · RE investors

U-Bell.com — real estate investor platform

Problem: Investors needed one place to evaluate deals, model returns, and work through buy/lease/sell workflows instead of scattered spreadsheets and ad hoc tools.
Approach: Built and operated the U-Bell.com Next.js app: Auth0 login, investment listings and detail pages, ROI/equity utilities, dashboard and opportunities flows, plus Docker deploy and Cypress coverage on core auth journeys.
Outcome: Founder product on u-bell.com that established the same production patterns later extended on vive.us—identity, typed React UI, and shipped deploys before the rental marketplace grew.
Lesson: Shipping your own product first forces the discipline you later bring to client work: auth, deploy, and a narrow UX beat feature sprawl.

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