Web platforms
Production apps in TypeScript, Next.js, NestJS. Server-rendered, SPA, or hybrid.
CURRENTLYCosmic SocietyManila
ErvinPangilinan
I've been building software since 2021, back when it was still a hobby. Today the hobby is the job: at Cosmic Society I make software that helps people connect and engage, mostly used TypeScript, Next.js, Supabase, and NestJs, and I still mess around with AI automation and systems design.
About
I write software, mostly for the web. Started in 2021 as a hobby and it turned into a career. Today I'm at Cosmic Society building a multi-brand event and retail-activation platform that supports ~30,000 peak users at large-scale events. Before that I shipped production work for HEQS Group (Sydney) and FiveTwenty IT Services (Manila), and I'm a Computer Science grad from Cavite State University.
I work across the stack, but backend is where I go deepest: REST APIs, role-based access, row-level security, audit logging, query optimization, CI/CD. I care about clean architecture, accessibility, and code the next person can read without a guided tour. The rest of my time goes to whatever I'm learning right now.
What I build
Mobile apps
Cross-platform with React Native + Expo. Offline-first, secure releases.
DevOps & deploys
CI/CD pipelines, Docker containers, cloud hosting on Vercel, AWS, Azure, DigitalOcean, Heroku.
Game dev
Small 2D Unity prototypes when I want to think about something different.
Experience
- Mar 2026 – PresentCurrent role: NOW
Full-stack Developer
Building a multi-brand event and retail-activation platform on Next.js, Supabase and Tailwind, serving ~30,000 peak users at large-scale events.
- Fixed two cross-brand privilege-escalation vulnerabilities in the Postgres row-level security layer
- Scaled the platform for production event load: database load-profiling, rewritten brand-admin RLS policies after a statement-timeout incident, virtualised admin lists, and heavy statistics moved to Deno edge functions
- Extended the Salesforce, Twilio and Veriff/SCHUFA integrations, adding SMS delivery observability with segment-accurate cost tracking, a retry queue for pending consent syncs, and Apple Wallet membership passes
- Rebuilt admin loyalty analytics with leaderboards and a live activity feed, plus unified dispense reporting across staff, agent and machine channels with date-range filtering and CSV export
- E2E and integration coverage with Vitest and Puppeteer; every schema change ships as a repeatable migration
Technologies used:TypeScriptNext.jsSupabasePostgreSQLTailwindDenoNetlifyVitestPuppeteer
- Aug 2025 – Feb 2026
Full-stack Developer
Built and optimized production web applications across TypeScript, Next.js, NestJS, and Laravel.
- Migrated legacy Pages Router to App Router: 30%+ faster page loads and improved Core Web Vitals
- Technical SEO and dynamic sitemaps drove ~2,000+ additional organic page visits
- Cut cloud costs ~45% with CDN-based asset caching and SSR strategies
- CI/CD pipelines via GitHub Actions across Vercel, Heroku, AWS, and Azure
- Cross-functional collaboration with IT, marketing, SEO, and sales on UI/UX and production design
Technologies used:TypeScriptNext.jsNestJSLaravelGitHub ActionsVercelAWSAzureHeroku
- Jun 2024 – Jun 2025
Full-stack Developer
Built enterprise-grade applications end-to-end; started as IT intern, transitioned to full-stack.
- Engineered enterprise apps in TypeScript, React, Express, and PostgreSQL; containerized with Docker on DigitalOcean
- Introduced E2E testing with Playwright + Jest, reducing regression bugs and improving reliability
- Active in Agile workflow: sprint planning, debugging, QA, and code reviews
- Provided basic IT troubleshooting (hardware, software, network) during the intern period
Technologies used:TypeScriptReactExpressPostgreSQLDockerDigitalOceanPlaywrightJest
- 2023 – 2025
Freelance Developer
Custom web and mobile apps for students and small businesses, academic workflows and automated business processes.
- Built and deployed solutions with React, Express, React Native, Supabase, and PostgreSQL, with scalability and efficiency in mind
- Secured and optimized client applications: authentication flows and database policies
- Translated client requirements into shipped implementations with full project-delivery satisfaction
- Provided ongoing support and maintenance for long-term usability and client trust
Technologies used:ReactExpressReact NativeSupabasePostgreSQL
Stack
Tools I work with, sorted by how often I actually reach for them.
CORE
daily
- TypeScript
- Next.js
- React
- Tailwind
- SCSS
- Node.js
- Express
- PostgreSQL
- Prisma
- Supabase
- Docker
- GitHub Actions
- Vercel
- Netlify
- Vitest
- Jest
- Playwright
OFTEN
regular reach
- NestJS
- Python
- FastAPI
- React Native
- Expo
- shadcn/ui
- Puppeteer
- Supertest
- Redis
- Heroku
- DigitalOcean
SOMETIMES
shipped at least once
- Laravel
- Deno
- AWS
- Azure
- MongoDB
- MySQL
- Firebase
- Salesforce
- Twilio
- C#
- Unity
- n8n
TOOLS
daily workflow
- Git
- Figma
- Postman
- Draw.io
- Ollama
- OpenAI API
- Claude Code
- MCP servers
Work
Things I've built across internship, freelance, and a couple of academic projects.
image of priceworth australian furniture e-commerce website FEATURED
Priceworth Furniture
2025Storefront and back office for an Australian furniture retailer, selling mostly to homes and sometimes to larger companies. A Next.js front end over a NestJS API. Because it is a live commercial site, the App Router migration had to land incrementally with no downtime, which meant picking a rendering strategy per page type instead of converting everything at once.
- Next.js
- NestJS
- TypeScript
- PostgreSQL
- GitHub Actions
- Vercel
- Azure
- AWS
- Heroku
image of paysera timekeeping system Paysera Timekeeping System
2024 – 2025Internship at FiveTwenty: led the backend of a corporate timekeeping platform used by 40+ employees (role-based access, audit logging, API design, Redis caching) and contributed to frontend and DevOps, including Jest, Supertest and Playwright coverage plus Docker on DigitalOcean with CI/CD. Now in daily production use by FiveTwenty's enterprise clients.
- React
- ShadCN
- Express
- Prisma
- PostgreSQL
- Redis
- TypeScript
- Docker
- Jest
- Supertest
- Playwright
- DigitalOcean
image of fair write a gender fair revision web application Fair Write (Gender Fair Revision)
2024 – 2025Group thesis project, a writing tool that flags biased terms and suggests inclusive alternatives in real time. I worked on the backend and NLP side: REST APIs, the bias-detection pipeline, and the LanguageTool + spaCy integration, tuned for concurrent requests. The live demo is still online.
- Svelte
- Tailwind
- Prosemirror
- FastAPI
- LanguageTool
- spaCy
image of ajapco sales and inventory system Ajapco Sales & Inventory System
2023Freelance build for Ajapco, a Japanese sweets shop: a sales and inventory system with a reporting dashboard (monthly sales, stock alerts, best-selling products) plus product, stock, sales, and employee management. Built solo, front to back.
- React
- Zustand
- React Hook Form
- Node.js
- Express
- MySQL
image of greencycle a recycling mobile app GreenCycle Mobile App
2025Freelance project, built solo: a React Native app for discovering ways to reuse and recycle fruit and vegetable waste, with liked posts and an admin dashboard for reviewing pending submissions. Online-first backend with offline support, cloud↔local sync tested on Android and iOS.
- React Native
- Expo
- Supabase
- TypeScript