Patrick Brent Santiago · call sign “Brent”

I build full-stack products, AI automations, and interfaces that ship, recover hours, and convert.

Full-stack developer · AI-automation builder · UI/UX

For founders and teams who need working software, not a hand-off chain — I design, build, and deploy it solo, AI-accelerated, end to end.

See the build Book a call Download résumé

Live in production ~842 organic searches/day Escrow payments Security-audited Built solo

Flagship — case study

UniDorms — a live two-sided marketplace, built solo, end to end

01Problem

Students and landlords near universities lack a trustworthy, end-to-end way to find and book housing with safe payments — listings are scattered, informal, and risky for both sides.

02Approach

Designed and built a two-sided marketplace solo, end to end — Next.js/React + Supabase/Postgres, 50+ API routes, escrow-style Xendit settlement (first-to-pay-wins atomic claim, auto-refunds, admin payouts), landlord KYC, host reputation, transactional email, continuous Vercel deploy — accelerated by directing a 31-agent AI dev team.

03Result

Live in production. ~842 organic searches/day, 50+ API routes, escrow payments live, security-audited — shipped by one person. See it running below.

live in production two-sided marketplace · escrow payments · solo-built visit unidorms.ph ↗
~842
Organic searches / day
50+
API routes in production
2
Sides of the marketplace
1
Engineer (hi)
  • Escrow-style payment settlement via Xendit — a "first-to-pay-wins" atomic claim, automatic refunds for the race losers, and admin-approved payouts
  • 50+ API routes covering booking, messaging, reviews, and disputes
  • Landlord KYC verification and a tiered host-reputation system
  • Next.js 14 / React frontend on a Supabase / Postgres backend
  • Analytics dashboards and transactional email baked in
  • Continuous deploy on Vercel — ship loop measured in minutes, not sprints
  • Growth engine included: Facebook ads plus in-house launch videos
Visit UniDorms ↗ Want something like this built? Let's talk

What I do for you

Three ways I make your product better

Full-stack products that ship

From database to deploy — one accountable builder who owns the whole chain, so nothing gets lost in a hand-off.

AI automation that recovers hours

Data extraction, matching & search, and multi-agent workflows that cut the manual work out of your week.

Interfaces that convert

Fast, accessible, on-brand front-ends — built to move visitors toward the action you need them to take.

Flight simulators

Don't take my word for it — press the buttons

Four working miniatures of things I've actually built, running right here in this page. No libraries, no servers, no smoke — each one is proof of something I can build for you.

The escrow race

payments / fintech

What this proves: real payment logic — safe money handling I can build for you. In UniDorms, when two people race to pay for the same room, exactly one payment wins the claim — atomically — and the other is refunded automatically. Every time.

ROOM 4B — 1 slot available OPEN
Buyer A waiting
Buyer B waiting
— settlement log: press "Run the race" —

The extraction terminal

AI features / data

What this proves: automation that recovers hours — AI pipelines that turn messy human text into clean, structured data, the way listings get ingested at scale. Watch a chaotic rental post become machine-ready JSON.

Structured output
// output appears here…

How I ship at agency scale, solo

AI orchestration

What this proves: the AI-consulting capability itself. I'm one builder directing 31 specialist agents across Design, Review, and Build pods — each with a defined job, a defined lane, and review gates between them. That's how a solo engineer ships (and audits) at agency scale. Press the button to watch the org chart deploy, then meet every crew member by name in the manifest below.

BRENT · CEO
Design pod
Review pod
Build pod
31 specialists standing by

What never gets automated: auth, payments, database changes, and brand — those pass a human gate before anything ships.

Crew manifest — all 31, by name

Grouped by pod. Open any crew member to see how it works.

Orchestration
CEO Orchestrator

Turns a goal into a plan, assigns the right specialists, decides what ships vs. what needs sign-off, and reports back.

Design & UX
Editorial Director

Typography, readability, type scale, and reading rhythm.

Brand Consistency Reviewer

Guards design tokens, color, spacing, and visual consistency.

Frontend Systems Engineer

Component architecture, reusable UI, and layout discipline.

Accessibility Auditor

WCAG: keyboard nav, screen-reader structure, focus, and contrast.

Motion Director

Animation pacing, transitions, and respectful reduced-motion.

Mobile Developer

Touch targets, thumb reach, viewport correctness, and native-feel mobile UX.

Copy & Growth
Conversion Copywriter

CTAs, landing copy, and microcopy that converts.

Market Localization

Local-market fit: currency formatting, local payment methods, and regional tone.

SEO / Discoverability

Metadata, structured data, sitemaps, and indexability.

Content Strategist

Topic strategy, briefs, and the content calendar.

Social Media Manager

Ready-to-post captions, scripts, and launch posts.

Analytics Instrumentation

Event tracking, funnel coverage, and keeping PII out of analytics.

Review & Integrity
Correctness & Crash Reviewer

Hunts crashes, runtime errors, and unsafe data access.

Regression Verifier

Confirms a change caused zero unintended drift across pages and viewports.

Security API Auditor

STRIDE threat modeling: auth, IDOR, boundaries, and data leaks.

Security Audit (Fix)

Hardens the app: secrets, route protection, and webhook verification.

Payments Integrity Engineer

Traces the money: fee math, refunds, webhook idempotency, and reconciliation.

Trust & Safety Reviewer

Fraud and scam patterns, moderation, and dispute signals.

Legal & Privacy Compliance

Data-privacy review, PII inventory, and policy-vs-code accuracy.

Build & Data
Build Agent

Implements specs with targeted edits and verifies the build.

Test Automation Engineer

Unit, integration, and end-to-end tests, plus coverage gaps.

Data Schema Steward

Database schema, row-level security, migrations, and indexes.

Data Analyst (BI)

Metrics, funnel conversion, and decision-ready KPIs.

AI Features Engineer

Quality of AI features: extraction pipelines, matching, and prompt evals.

Email Lifecycle Engineer

Transactional email, deliverability, and a durable retrying outbox.

Performance Engineer

Core Web Vitals, bundle size, caching, and load speed.

Reliability / DevOps Engineer

Deploy hygiene, env vars, cron health, and observability.

Workflow Engineer

Walks every user journey, clicking every button end to end.

Support & Ops
Customer Support / CX

Support flows, canned replies, and help-center accuracy.

Docs / Knowledge Curator

Keeps the team's knowledge base current and organized.

The second-brain constellation

knowledge systems

What this proves: knowledge that compounds instead of rotting — I build LLM-maintained "second brains": self-updating knowledge bases where every note stays linked to its neighbors. Hover a star to light up its connections; drag it and the constellation follows.

The solar system

One toolkit, one gravitational center: shipping

Everything orbits the same goal — getting your product live, working, and growing.

Toolkit — the software I use

Not a decoration wall: React · Supabase · Xendit and the rest of the core stack are powering UniDorms in production right now. Hover — or tab — across the array to power each instrument up in its own brand color.

Languages & Frameworks

  • JavaScript
  • React
  • Next.js
  • Tailwind CSS
  • Node.js
  • SQL

Backend & Infrastructure

  • Supabase
  • PostgreSQL
  • Vercel
  • Git
  • GitHub

AI & Automation

  • Claude
  • ChatGPT
  • AI agent orchestration

Payments & Email

  • Xendit
  • Resend

Editor & Knowledge

  • VS Code
  • Obsidian
  • Notion
  • Slack
  • Google Workspace

Design & Content

  • Canva
  • CC CapCut

Data, Analytics & SEO

  • Microsoft Excel
  • M Minitab
  • Google Analytics
  • Search Console
  • Meta / Facebook Ads

gold dot = running UniDorms in production today

Full-stack web

React · Next.js 14 · Tailwind · JavaScript · Node.js — powering UniDorms, live

Databases & backend

Supabase · PostgreSQL · SQL — 50+ API routes serving production traffic

Payments & fintech

Xendit escrow settlement: first-to-pay-wins atomic claims, auto-refunds, admin payouts

AI features

Claude / Anthropic · AI-accelerated development · structured data extraction

AI agent orchestration

Directs 31 specialist agents in design / review / build pods — solo output at agency scale

Second-brain knowledge systems

LLM-maintained, self-updating knowledge bases (Obsidian + LLM wikis) that compound instead of rot

Industrial Engineering

Process optimization and data-driven rigor — it's my degree, and it shows up in how I build

Project management

Scoping, coordinating, and shipping — one owner from kickoff to delivery

Growth marketing

Facebook Ads — campaigns wired straight to the product funnel

Video & creative

Canva · CapCut · in-house launch videos

Data & analysis

Excel · Minitab · SQL — measure first, opine second

Copywriting & conversion

Words that pull their weight — landing pages, CTAs, microcopy

Mission control

One person. Full stack. Whole mission.

I'm a self-taught full-stack engineer and solo founder. I pair an Industrial Engineering background — process thinking, measurement, ruthless waste-cutting — with AI-accelerated development to take products from idea to production fast.

Hire me and you get the whole chain — design, frontend, backend, database, payments, deployment, and copy — from one pair of hands that has done it for real, in production.

Flight training

2019 – 2024

De La Salle University
B.S. Industrial Engineering
Minor in Information Technology

  • Superpower: shipping the whole thing, solo
  • Method: AI-accelerated, engineering-rigorous
  • Style: direct, warm, allergic to buzzwords

Flight log

What I've shipped along the way

  1. 2026 – Present

    Founder & Sole Engineer — UniDorms

    Sachi Tech OPC

    Shipped a production two-sided marketplace solo: escrow payments, landlord KYC, host reputation, 50+ API routes, transactional email, analytics, and continuous deploys — plus the ads and launch videos that bring users in. Now serving ~842 organic searches a day. The flagship above is the case study.

  2. 2024 – Present

    Sales Manager

    Digital Network Communications

    Owns project sites and key accounts end to end — scoping, coordinating technical teams, and closing — which is to say: I'm comfortable owning client communication and delivery, not just the code.

  3. 2023

    Accounting Intern

    PGA Cars

    Reconciled bank records, job orders, audits, and payables — where I learned that details either reconcile or they don't. Useful instinct for someone who now moves money in code.

Open a channel

Got something to build?

If you need someone who can take a product from "napkin sketch" to "live, taking payments, and growing" — without a hand-off in the middle — book a call.

Book a call — patrick_brents@yahoo.com LinkedIn ↗ Download résumé

No forms, no funnels. Just email me like a person. References available on request.