Open to remote, hybrid & international

Joshua Dave
Oropilla

I design and build fast, reliable systems: real-time data platforms, full-stack web apps, and the interfaces people actually use.

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3+
years in production
20k+
users served
ACM
published researcher

Pixel-crafted since 2018

Tech Stack

Tools & Skills

The stack I reach for, grouped by where it lives in a system.

Languages

TypeScript JavaScript Python Go C# HTML5 CSS

Frontend

React Next.js Astro Tailwind CSS shadcn/ui TanStack Query WordPress

Backend

Node.js Express WebSocket Microservices Monorepo

Data

PostgreSQL MongoDB Redis

DevOps & Cloud

Docker Kubernetes GitHub Actions Google Cloud Microsoft Azure Cloudflare Linux TurboRepo

Infrastructure

Proxmox MikroTik Playwright Web Scraping

AI & ML

LangChain Claude API GitHub Copilot Cursor Codex OpenCV

Tooling

Git GitHub

Career

Work Experience

Mar 2026 – Present

Current

Lead Software Engineer

Confidential

  • Lead the engineering team building a high-throughput, real-time monitoring platform that detects newly available inventory across large-scale external data sources within tight latency budgets.
  • Own the end-to-end system architecture for a service engineered to be among the fastest and most accurate availability-detection tools in its market.
  • Designed and operate large-scale distributed networking and proxy infrastructure that keeps thousands of concurrent workers reliable and online at scale.
  • Set technical direction, drive engineering decisions, and mentor the team as lead developer.

Mar 2024 – Feb 2026

Programmer

University of Baguio

  • Designed and shipped full-stack institutional web apps from architecture through production, serving a 20,000+ student and staff population across mission-critical workflows.
  • Built RESTful APIs and backend services with Node.js and Express.js over MongoDB and PostgreSQL, applying schema design, indexing, and query optimization for performance at scale.
  • Engineered a real-time graduation management system handling 500–2,000 students per ceremony using WebSocket-driven event processing, replacing a manual paper-based process.
  • Built a legacy-system integration layer that ingests, cleanses, and normalizes data from an unmodifiable upstream system into a unified schema, the backbone of a centralized student information platform.
  • Delivered a full Human Resources Information System (HRIS): admin dashboard, automated email notifications, performance-evaluation workflows, and a centralized document repository.
  • Deployed containerized apps with Docker on Microsoft Azure with automated CI/CD via GitHub Actions.

Jun 2023 – Feb 2024

Freelance Software Engineer

Self-employed

  • Built and shipped an AI-powered legal case digest app for law students, integrating the Claude API with a retrieval-augmented generation (RAG) pipeline, offered free of charge.
  • Deployed on Azure Kubernetes Service (AKS Automatic) with pay-per-second compute to minimize hosting costs for a free-to-use platform.
  • Managed end-to-end cloud delivery independently with Docker and version-controlled pipelines in an async-first workflow.

Selected Work

Projects

A few systems I've designed and shipped end to end. Tap any card for the architecture behind it.

Source private
GitHub
GitHub
GitHub

About

Who I am

3+ years of shipping production-grade applications to 20,000+ users across mission-critical institutional workflows. I work end to end: full-stack web development, RESTful API and microservices design, real-time WebSocket systems, data integration pipelines, and AI/LLM features built on retrieval-augmented generation (RAG). I'm also an ACM-published researcher (CIIS 2023, Tokyo). Based in the Philippines and open to remote, hybrid, and international opportunities.

hover me, I hop

Contact

Let's build something

Open to remote, hybrid, and international roles. The fastest way to reach me is email.

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