Full-stack developer in the Philippines building AI-powered web apps, internal tools, and SaaS products, now taking on freelance projects for clients worldwide. I work async across US/EU hours, ship production code, and reply within one business day.
Seven systems: live products, a cooperative’s loan books, a music-driven video engine, and the tools I build for myself.
Live at algolens.app
AI pre-post reviewer that scores and rewrites posts for X
Paste an X draft and get a 0–100 content score with a breakdown of the engagement signals it is likely to earn, plus specific fixes. AI rewrites in three styles, and a Chrome extension in the works. Free in open beta.
Building
Loans, savings, and collections for a multi-purpose cooperative
Capstone project: a loan, savings, and collections system built for a multi-purpose cooperative. Amortization that matches the cooperative’s own sample loan, row-locked payments, and five staff roles.
Shipped
A local-first memory vault that answers from what you saved
Save links, pages, videos, selections, and notes from a Chrome extension. Concordance summarizes and tags them, then answers questions with citations back to your own sources, and says so when it can’t.
Shipped
Always-on Claude Code usage dock for Windows
A glass dock on the edge of the screen that shows how much of your Claude Code limits remain, which projects are using them, and what to change. Your usage history stays on your machine.
Building
Android app that reads GCash receipts and balances the day
An Android app for GCash Partner Outlet operators. It reads receipt screenshots on the phone, adds up the markup, and counts the drawer with you at closing. Built in Flutter, data stays on the phone. Getting ready for a Google Play closed test.
Building
Engine that turns music into on-beat, follow-along video
A rendering engine that takes a music track and produces an on-beat, follow-along video. It is a private project, so details stay limited.
Private project, so visuals stay private.
In production
Modular cloud ERP for Philippine small businesses
Litecloud’s cloud ERP for small and mid-size businesses in the Philippines, sold by module: accounting, HR and payroll, inventory, purchasing, point of sale, and leasing. I built Vicinage’s subdivision and resident management and most of the core: accounting, point of sale, inventory, purchasing, and customer records.
Commercial product holding client data, so no public screenshots.
Each square is a day of work, straight from GitHub, from when steady work began. Most of it lives in private repos, so it’s counted here without names.
1,959 contributions across 126 active days. Longest run 26 days; busiest day 87 contributions on Jul 23, 2026.
What you get from each kind of engagement, and how long it usually takes.
LLM features wired into your existing product: chat, summarisation, extraction, agents. I design and test the evals and guardrails each feature needs, and say plainly what is and is not covered.
Production integration · prompt + eval suite · docs & handover
Typically 1–3 weeks
SaaS or internal tool from zero to deployed: auth, core workflow, admin, reporting. Scoped to what proves the business, nothing more.
Deployed app · source & CI · 2 weeks post-launch support
Typically 3–6 weeks
n8n and API pipelines that replace manual ops work: syncing systems, generating documents, routing data between tools.
Running automation · monitoring · runbook
Typically 1–2 weeks
Working samples of the kind of build I do for small businesses. Not client work: sample shops and test payments, so you can try every step.
Live demo at demos.sitsit.dev
Customers order in Taglish, English or Bisaya, pay by GCash or Maya in test mode, and the owner’s phone (simulated here) rings once payment is confirmed.
Screenshot includes photos from Wikimedia Commons (CC BY-SA 2.0/4.0, CC0); authors and licences. GCash, Maya, Xendit, Claude, n8n and Cloudflare are trademarks of their owners; this demo is not affiliated with or endorsed by them.
Async-first. Works in any time zone, delivers on yours.
AI handles scaffolding, tests, refactors, and docs. Human judgment stays on architecture, UX, security, and product tradeoffs.
2+ years maintaining live systems. Code that earns its place in the repo.
What broke, what I measured, and what changed my mind.
AlgoLens moved quota reservation ahead of its model call to close a check-then-act race. What keeps the reservation from racing, and what the test shows.
Fake GCash receipts are easy to make. My chat order demo marks an order paid only when the gateway confirms the money, and code, not AI, does the math.
new Date("2026-07-23") is UTC, but add a time and it becomes local. The ECMAScript rule behind the split, and how to treat naive timestamps.
2024 – Present
Building and shipping my own products: AlgoLens, an AI post reviewer live in open beta; Cashi, an offline outlet float tracker heading to Google Play; Concordance, a local-first AI memory vault; and ClaudeBar, an open-source desktop tool. Also built a loan and savings system for a multi-purpose cooperative. Now taking on freelance projects.
Jul 2022 – Aug 2024
Built the Vicinage subdivision module and most of the core of CERPSYS, Litecloud’s modular cloud ERP for Philippine small businesses: accounting, point of sale, inventory, and purchasing.
I started building things on the internet out of curiosity, pulling apart websites to see how they worked, then putting my own ideas together. That curiosity became a craft. Two years building a commercial ERP taught me what production really asks of software, and today I build and ship my own products while taking on freelance work.
I care about code that earns its place: readable, honest, and actually shipped. I integrate AI where it adds real value, not where it adds noise. Based in the Philippines, collaborating worldwide.
Tell me what you’re building, where the project stands, and what outcome you need. I’ll reply with fit, next steps, and a realistic path forward.
Prefer a quick call?
Fifteen minutes to see whether we’re a fit.
References available on request.
