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Independent developerİstanbul, Türkiye

Full-stack developer

I build web, backend and mobile applications with C#, .NET, React, Flutter and Kotlin. A collection of what I make, what I learn and useful little tools.

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Backend / Web / MobileThings I make and learn

01 / Selected work

Projects06

All projects
6 projects
  • 012026

    Association Management

    A desktop management system for non-profit organizations and associations to handle membership directories, recurring dues, receipts, and financial reporting.

    Project story
    .NET / C# / Windows Forms / SQL ServerRepository
  • 022026

    BPM Finder

    A client-side WebAssembly audio analysis application that calculates musical tempo (BPM) in real time using Essentia.js and WebAudio API.

    Project story
    JavaScript / React / WebAudio API / Essentia.js / WebAssemblyRepository
  • 032026

    Personal Notes

    An offline-first Android notes application built with Kotlin, Room SQLite database, Coroutines, and reactive StateFlow for zero-latency note capturing.

    Project story
    Kotlin / Android / Room DB / Coroutines / MVVMRepository
  • 042025

    City Assistant

    A multi-platform civic governance system enabling citizens to report urban issues via interactive map coordinates with real-time tracking across web, mobile, and API.

    Project story
    .NET / C# / React / TypeScript / Flutter / PostgreSQL / Google MapsLive site
  • 052024

    YouTube Downloader

    A clean, ad-free cross-platform desktop and mobile YouTube video/audio downloader powered by .NET 8 MAUI and YouTubeExplode directly on-device.

    Project story
    .NET MAUI / C# / XAML / Cross-PlatformRepository
  • 062024

    Hotel Reservation System

    An enterprise N-Tier hotel reservation and occupancy management web platform featuring room filtering, overbooking prevention, and admin dashboards.

    Project story
    ASP.NET MVC / C# / Entity Framework / SQL Server / BootstrapRepository

02 / Field notes

Notes04

All notes

03 / Small utilities

Your files stay with you.

Merge PDFs, extract pages and turn images into PDFs. All in your browser.

Open tools

04 / Contact

Have an idea?
Let’s talk.

Get in touch about a project, internship or work opportunity. I usually reply within a few days.

Umut Güven UsluCode, explore, try again.