Available for your projects

Full stack engineer.
8 years in.

I build products end-to-end — database to deployed UI. I work best when I own the problem: making the right technical calls and shipping something that holds up at scale.

Based Philippines · Remote Worldwide
Available Freelance & Contract
Domains Fintech · Logistics · Consumer Apps · Marketing
Also into AI-assisted workflows · LLM Integrations
8+

Years building real products
across fintech, logistics, and consumer apps

4+

Industries shipped in —
fintech, logistics, consumer apps & marketing

01

Selected Work

001

Stablecoin Business Finance Platform

A platform for corporate cards, cross-border payments, and expense management used by global businesses running multi-currency treasuries. I work on this full time — building and maintaining product features across the full stack in a regulated financial environment where transactions are real and mistakes cost money.

React NestJS PostgreSQL AWS Docker Fintech
002

AI Browser Extension

Built a Chrome extension that reads the content of your active tab and lets you have an AI conversation about it — summarise articles, ask questions, create shareable insights without leaving the browser. It grew to over 10,000 active users on the Chrome Web Store.

Chrome Extension JavaScript Python AI / LLM 10k+ users
003

Outdoor Adventure Booking Platform

Designed and built the full backend for an outdoor adventure company's mobile app — event listings, trip slots, bookings, and user accounts. Still live and actively used.

Laravel REST API Backoffice
004

Regional On-Demand Delivery Platform

Built a delivery platform from nothing — customer mobile app, merchant portal, admin dashboard, and all backend APIs. Every technical decision was mine: architecture, stack, infrastructure, deployment. Went from zero to live with real customers and delivery riders on the road.

React Native React Node.js 0 → live
005

Major Philippine Bank — Website Rebuild

Rebuilt the public-facing website of one of the Philippines' largest banks from the ground up. High-visibility project, regulated environment, delivered on time — then handed over cleanly to the client's internal team who have maintained it since.

Frontend Fintech Delivered & handed over
02

What I Do

01

Backend & API Engineering

Scalable APIs and data pipelines built to grow without breaking. Shipped in fintech, logistics, marketing, and consumer apps.

  • NestJS · Node.js · PostgreSQL
  • REST, GraphQL, WebSocket
  • Redis, Event-driven Architecture
  • Auth, Billing, Permissions
03

Full Product Ownership

You have an idea. I'll own the whole thing — architecture, build, and ship. No hand-holding needed on my end.

  • Architecture & System design
  • AWS · GCP · Docker · CI/CD
  • Zero to live delivery
  • Handover & Documentation
03

Stack

Tools
I trust.

Picked for the job, not the CV. Most have been used in production, under pressure, at scale.

Frontend

React Next.js React Native Expo TypeScript Styled Components Zustand React Query Zod

Backend

Node.js NestJS Express TypeScript WebSocket Redis REST GraphQL Zod

Databases

PostgreSQL MongoDB MySQL Prisma

Infra & Cloud

AWS GCP Firebase Docker CI/CD Shell scripting

Testing & Tooling

Jest Vitest Git Swagger Postman Figma

Exploring

Python Go AI / LLM APIs
04

How I Work

Discover

I dig into the real problem before writing a line of code.
What you describe and what you need aren't always the same thing.

Plan

Clear scope, right stack, honest timeline.
You know exactly what's being built and when before anything starts.

Build

Weekly progress you can see.
Working software, not status updates and slide decks.

Test

Covered before it ships.
Unit tests, integration tests, real-world edge cases — not just happy paths.

Ship

Deployed, documented, handed over properly.
No loose ends, no dependency on me unless you want one.

Start a project

Let's build
something
real.

barot.johnangelo@gmail.com Get in touch