Josh Cemine

Fullstack Developer

I build fast, reliable web applications end to end, from the data layer to the deployed UI.

About

I'm a fullstack developer from Cebu City, Philippines, with two years of hands-on experience on small teams where I own features end to end, from the data layer to the deployed UI. Most recently I've been freelancing: co-leading a healthcare compliance platform, building an ad-creation and analytics platform on the TikTok, Meta, and Google APIs, and shipping scraping and AI-integration systems for clients.

I graduated cum laude in Computer Science from the University of the Philippines in 2024, and interned at Devsoft PH, Old St. Labs, and GWION Solutions before going independent. These days I'm building depth in Java and Spring Boot. I like owning the boring, load-bearing parts that keep software trustworthy.

Away from the keyboard, I sang with (and ran committees for) UP Serenata, our university choir.

Josh Cemine Josh Cemine - hover
  • TypeScript
  • JavaScript
  • Python
  • SQL
  • Java
  • React
  • NextJS
  • Node
  • NestJS
  • Express
  • TailwindCSS
  • AWS
  • Vercel
  • Supabase
  • PostgreSQL
  • Docker
  • Linux
  • Git
  • AI Agents
  • n8n
  • Playwright

Experience

  1. Jan 2025 - Jun 2026

    Freelance Software Engineer

    Contract & Project-Based Engagements

    Clinical Solutions · Lead Developer / Project Manager

    • Co-led a team of developers and US RNs building a Next.js compliance platform on Vercel and AWS, owning the delivery and feature work
    • Built a Python automation suite that lifted the team's peak output from 7-10 handmade reports a day to 100+ (a 10x improvement) across 8 client centers, helping them pass surveys at 100%
    • NextJS
    • Python
    • AWS
    • Vercel

    GymBros Inc. (Liftoff App) · Lead Developer

    • Built and deployed a full-stack Next.js app (React, Node, Supabase) for ad-management workflows, connected to TikTok, Meta, and Google over their REST APIs with retry and rate-limit handling
    • Cut ad publishing from 30-40 minutes per platform to about 1 minute by building an ad-creation pipeline on the Meta and TikTok APIs
    • Refactored an 8,000-line file into smaller modules and switched 10,000+ item lists to virtualized rendering (TanStack), cutting startup from about 12 minutes to near-instant
    • NextJS
    • React
    • Node
    • Supabase
    • TanStack

    Freelance Clients · Software Engineer

    • Built a Playwright scraping system with n8n workflows and captcha solvers that delivered bank-repossessed property data into a Next.js dashboard for a real-estate intelligence client
    • Built a Next.js and Supabase demo with OpenAI function-calling RAG for The Cultivator, an AI-powered job platform
    • Playwright
    • n8n
    • OpenAI
    • Supabase
  2. Aug 2024 - Dec 2024

    Devsoft PH

    Intern

    • Provided technical support by debugging Angular and jQuery issues, improving product stability and user experience
    • Resolved customer-reported problems through code fixes and clear communication, enhancing product adoption
    • Received advanced mentorship in JavaScript design patterns and MVC architecture, improving code quality
    • React
    • Angular
    • JQuery
  3. Jul 2023 - Sep 2023

    Old St. Labs

    Intern

    • Built full-stack apps in an Nx monorepo (NestJS, Next.js) with responsive React and TailwindCSS UIs under senior code review
    • Nx
    • NestJS
    • NextJS
    • React
  4. Mar 2020 - Jun 2020

    GWION Solutions

    Intern

    • Built custom WordPress themes using PHP and JavaScript using the classic editor workflow
    • Developed and optimized MySQL database architecture with a focus on improved scalability
    • Collaborated with clients and mentors to deliver e-commerce solutions that boosted business metrics
    • WordPress
    • PHP
    • JavaScript
    • JQuery

Education

  1. Sep 2020 - Jul 2024

    University of the Philippines

    B.S. Computer Science

    • Graduated Cum Laude
    • Committee Head of UP Serenata, the school choir that performed in multiple interschool competitions
    • Science Federation and Google Developer Student Club member
  2. Aug 2018 - Jul 2020

    Tagbilaran City Science High School

    TVL - Information and Communication Technology

View Full Résumé

Projects

  1. Self-Hosted n8n AI Assistant

    An AI agent running on a private Linux server that labels and triages my email and surfaces urgent items to me through the Telegram API.

    • n8n
    • Linux
    • Telegram API

  2. Repossessed Cars Scraping App

    Web scraping app automating data extraction from bank repositories, with Supabase integration and dual authentication (credentials and Google OAuth).

    • Supabase
    • OAuth
    • Web Scraping

  3. Java Job Tracker

    A Spring Boot job-application tracker with a layered controller, service, and repository architecture, JPA entities, and REST endpoints. Built with PostgreSQL and Docker to grow my Java depth in public.

    • Java
    • Spring Boot
    • PostgreSQL
    • Docker

  4. This Portfolio Website

    Designed in Figma and built with Astro, React, and TailwindCSS. Deployed on a DigitalOcean droplet using Nginx, later migrated to Oracle Cloud.

    • Astro
    • React
    • TailwindCSS
    This Portfolio Website screenshot

  5. Project Ceboom

    A collaborative MERN-stack app for finding optimal city routes. I led DevOps and deployment, configuring AWS infrastructure for high availability.

    • ReactJS
    • ExpressJS
    • AWS
    Project Ceboom screenshot

  6. College of Science Automatic Request System

    Full-stack web app automating school form requests with real-time approval tracking. I engineered the ExpressJS REST API and managed the AWS deployment.

    • ReactJS
    • ExpressJS
    • AWS
    College of Science Automatic Request System screenshot

  7. CROCS vs PNGs

    A Godot tower defense game with wave-based enemy mechanics. I implemented the multiplayer synchronization and weapon systems.

    • Godot
    CROCS vs PNGs screenshot