Portrait of Mike Denum

Mike Denum

Full Stack Developer

I build production-ready Next.js, React, TypeScript, and Python applications with PostgreSQL, offline-first workflows, and business-focused user experiences.

Recent work includes mapping platforms, installable POS systems, and custom SaaS tools for teams that need reliable software in low-connectivity environments.

Technical Expertise

Frontend Development

Building responsive, high-performance user interfaces and offline-capable applications.

Tech stack:
React.js / Next.js (App Router)
TypeScript & Modern JavaScript
Tailwind CSS
Bootstrap
SCSS
Material UI
shadcn/ui
PWA Development (Offline-first systems)
Data Visualization (Recharts)

Backend Development

Designing scalable APIs and business logic for production-ready systems.

Tech stack:
Django & Django REST Framework
Flask
RESTful API Architecture
JWT Authentication & RBAC
Multi-branch / Multi-tenant system design

Database & Tools

Managing data persistence, syncing, and deployment workflows.

Tech stack:
PostgreSQL
IndexedDB
MySQL
SQLite
Git
GitHub (Version Control)
Vercel
Firebase (Deployment)
API Integrations (Payments, Email)
CI/CD & Environment Configuration

Featured Work

Selected Projects

Browse case studies for offline-first SaaS platforms, mapping applications, and business software built with Next.js, React, TypeScript, Python, and PostgreSQL.

View all case studies
Barangay Mapping App dashboard preview

Barangay Mapping App

Offline-first barangay mapping SaaS for resident profiling and planning analytics.

Barangay Mapping App is a multi-tenant SaaS platform designed for barangay-level household profiling, ALS mapping, and local planning analytics in low-connectivity environments.

Sellverse POS system dashboard preview

Sellverse POS and Management System

Offline-first multi-branch POS and operations platform for retail businesses.

Sellverse POS is a multi-branch, offline-first point-of-sale and business operations platform built for retail and beverage businesses that need reliable day-to-day operations.

Contact Me

Got a project waiting to be realized? Let's collaborate and make it happen!