Mateusz. Full-stack developer who ships — not just codes.
I'm the developer behind MefjuDev LLC. For the past 8+ years I've built custom websites, native iOS and Android apps, and cross-platform products for clients across the US, Europe, and Asia. Every line of code is mine — no agencies, no outsourcing, no handoffs to junior devs.
My work spans early-stage MVPs, production apps with real paying users, and full platform builds covering web and mobile. Whether you need a marketing site that loads in under a second or a native iOS app with Stripe-integrated subscriptions, I've shipped it before.
How I got here
I started building apps over eight years ago. What began as shipping small iOS projects grew into full-time freelance work across web and mobile — eventually incorporating as MefjuDev LLC to serve clients professionally with contracts, clear scopes, and reliable delivery.
Today I work with startups, founders, and small businesses who need a developer who can handle the full stack alone: database design, API architecture, frontend UI, native mobile builds, App Store submission, and post-launch iteration. Clients hire me because they get one point of contact from first message to launch — and because the code I hand over is clean enough to maintain.
Based out of Davao City, Philippines, I work remotely with clients across every major timezone. My setup is a MacBook Pro M1 Pro 16-inch, Xcode, Android Studio, VS Code, and Figma — nothing more is needed to ship production software.
Full-stack coverage, solo execution
Custom Web Development
Production websites and web apps built with React, Next.js, and TypeScript — fast, SEO-ready, and deployed on Vercel.
Native iOS Development
iPhone and iPad apps written in Swift and SwiftUI. Shipped 18+ apps to the App Store with real paying users.
Native Android Development
Android apps built in Kotlin with Jetpack Compose, following Material 3 guidelines and modern architecture.
Cross-Platform Apps
One codebase, two app stores. Flutter and React Native builds for projects that need iOS and Android simultaneously.
Backend & APIs
Node.js APIs with authentication, payments, and real-time data. Supabase or Firebase when it fits, custom when it matters.
Maintenance & Iteration
Already launched? I handle updates, new features, bug fixes, and App Store resubmissions so your product keeps moving.
Tools I use to ship production software
Web
- React
- Next.js
- TypeScript
- Node.js
- Tailwind CSS
- PostgreSQL
Native iOS
- Swift
- SwiftUI
- Core Data
- StoreKit
- WebKit
Native Android
- Kotlin
- Jetpack Compose
- Room
- Material 3
Cross-Platform
- Flutter
- Dart
- React Native
- Expo
Backend & APIs
- Node.js
- Express
- Supabase
- Firebase
- Stripe
- REST
Tooling & DevOps
- Git
- GitHub Actions
- Vercel
- Xcode Cloud
- Figma
Have a project in mind?
Tell me what you're building. I'll review your project, reply within 24 hours with my thoughts, and if it's a fit, we'll map out next steps together.