At the core of finance and operations
I spent years working on a comprehensive desktop system for domestic and international expenses, currency conversion, budgeting, inventory and reporting.
From enterprise operations and mobile products to AI, music technology and hardware — I turn complex work into products people can use with ease.
I'm Davut Engin. I hold a bachelor's degree in Computer Technology and Information Systems from Bilkent University and an associate degree in Computer Hardware from Başkent University. Over the years I have worked on problems spanning finance and operations, healthcare, manufacturing, banking and electronic document management — as well as mobile apps, AI and hardware integrations.
Software is my profession, but my relationship with technology has never been limited to working hours. The curiosity that began in childhood — taking apart televisions, cameras and almost any device I could get my hands on — is still very much alive. I enjoy not only seeing that something works, but understanding how and why it works, uncovering the relationships between its parts, and using what I learn to build something new. That continuing sense of discovery is what keeps my work feeling as engaging as a lifelong hobby.
Rather than tying myself to one technology or platform, I focus on the problem at hand. Sometimes that means bringing desktop, web and mobile together; sometimes it means making software communicate with turnstiles, barcode readers, displays, printers or specialized devices. My background in hardware, networking and systems helps me think about software not only as an interface, but as something that lives inside a real operating environment.
Today I apply that experience to multi-agent AI systems, mobile products and music technology. Kemençe is my main instrument; I understand the tuning and playing principles of many instruments, and I have tried most of them myself.
I also have practical camera experience a step above casual hobby level: I have shot music videos and photography work with crop-sensor cameras. The curiosity behind it stays the same: turning a working idea into a product people genuinely want to use.
iOS & Android apps live on the App Store and Google Play.
Smart solutions powered by AI, LLMs and RAG.
From microprocessors to network security, infrastructure that meets software.
Multiplayer games with Unity, C# and Photon Quantum.
Without naming clients or projects, the common thread across my work is that these systems sit at the heart of day-to-day operations — and reach well beyond the screen into the real world.
A Python-based platform that can work with local or external large language models: agentic loops, document intelligence, dynamic tool and MCP integrations, multi-agent collaboration and a chat interface come together in one system.
I spent years working on a comprehensive desktop system for domestic and international expenses, currency conversion, budgeting, inventory and reporting.
I built and shipped an iOS and Android app used by thousands inside a large organization. It integrated with cafeteria and turnstile access, while the path from code change to signed release, distribution and in-app update prompt was fully automated.
I spent a long time working on an electronic document management system used by thousands and built tools to migrate data from legacy platforms. On the web side, I worked within a single-page application architecture and CI/CD-based development process.
I developed a barcode-enabled production planning system with web and desktop components. It was designed not just for the office, but to operate inside the physical flow of manufacturing.
I built and operated a national ID-verified appointment system for a public hospital. In the same domain, I also developed a Delphi application that printed invoices through a dot-matrix printer.
I developed Java Spring backends in banking. I also built a Java Applet for specialized hardware, a multitasking plugin-DLL-based device data transfer application, and a software-only digital queuing system.
I gained hands-on experience with proxies, firewalls, Active Directory, Linux, Windows and macOS, and built applications that detected virus propagation and performed cleanup. I integrated Grafana and Prometheus-based monitoring into existing software, developed libraries that exposed Prometheus metrics for selected systems, and used OpenTelemetry in telemetry pipelines.
How I build productsInstead of saying “the user did not understand,” I first ask whether I understood and explained the problem well enough. I aim to build software people can grasp with the least possible effort — keeping the technical complexity behind the screen, where it belongs.
Apps and games you can get on the App Store, Google Play and Steam.
The next step in the Tulum series is on the way and will land here very soon.
The release that brings the Black Sea tulum sound to your pocket, live on both the App Store and Google Play.
The second generation in the series, still live for players who love the classic feel.
The original release that started bringing the tulum experience to mobile.
A tuner app I built for quick instrument tuning. Live on the App Store and Google Play.
A tuning assistant, detailed tuning list and fret guide for kemençe players.
A clean, powerful round timer for boxing, kickboxing and interval training.
A mobile game I built together with friends. It's on Google Play now; the iOS version is coming soon.
An award-winning adventure game built around finding your way through sound, live on Steam.
Projects moving between software, hardware, audio and games.
An innovative project that fuses a robotic bagpipe with an electronic one. Plug it into a sound system to play it like an electronic pipe, and have your recorded melodies played back on a real tulum through integrated solenoids. Both controller and playback modes.
A tulum instrument plugin for macOS and Windows. Works with GarageBand, Logic Pro, Ableton Live, FL Studio, Cubase and more. A standalone build is available too.
A music video I produced — a personal piece where I bring music and visuals together.
Small helpers that run right in your browser — no sign-up needed.