Backend Developer · FinSwipe Co-founder · AI Instructor
Building .NET applications, reusable developer tools, and practical AI solutions.
I'm a software developer based in Istanbul, working professionally since 2018. I've delivered 30+ .NET Core projects, from database and application architecture through development and deployment.
- Co-founder & Backend Developer at FinSwipe, working on financial software, consulting, and technical training.
- Backend Developer at AtlasTek, developing backend services and management tools for a bottle deposit system.
- Creator of REN.Kit, a modular .NET library suite for caching and data access.
- Instructor in Python, AI, machine learning, and backend development, with experience teaching at companies and student communities.
I enjoy turning recurring engineering problems into reusable tools and sharing what I learn along the way.
| Project | What it does | Stack |
|---|---|---|
| Yolla | A lightweight, self-hosted file transfer tool with browser-based uploads, resumable transfers, and downloads to and from storage you control. | C#, .NET 10, JavaScript, Docker |
| REN.Kit.CacheKit | Provides a unified interface for in-memory and Redis caching, with dependency injection support. | C#, .NET, Redis |
| REN.Kit.DataKit | Simplifies data access with extensible Repository and Unit of Work patterns built on EF Core. | C#, .NET, EF Core |
| FileService | Supports file uploads and downloads across Azure Blob Storage and Amazon S3. | C#, .NET, Azure, AWS |
| Fund Me With Your Face | Explores face recognition as part of a blockchain funding application. | Python, OpenCV, Solidity, Brownie |
| Area | Technologies |
|---|---|
| Backend | C#, .NET / ASP.NET Core, Entity Framework Core, Dapper, SignalR |
| Data & messaging | SQL Server, PostgreSQL, MySQL, SQLite, MongoDB, Redis, Elasticsearch, RabbitMQ |
| Python & AI | Python, TensorFlow, scikit-learn, NumPy, pandas, Streamlit, FastAPI |
| Delivery & testing | Docker, Azure, IIS, Git, xUnit |
| Also worked with | JavaScript, jQuery, Angular, Solidity, OpenCV |
- Application modernization: Migrated a .NET Framework application to .NET 6 and integrated video conferencing at UserVision.
- Cloud & deployment: Built an Azure speech-to-text pipeline and deployed and maintained .NET applications on Windows Server with IIS.
- Technical leadership: Led a five-person AI team at Global AI Hub, producing courses, workshops, and events in English and Turkish.
- Engineering & education: Combined product development with internal Python, AI, and data science training at Çiçeksepeti and DeFacto.
Education & certification
- B.Sc. in Computer Engineering — Altınbaş University, 2014–2018
- Google TensorFlow Developer Certificate — earned June 2021
Interested in .NET development, developer tooling, AI education, or a collaboration?
Reach me at contact@fethitekyaygil.com or visit fethitekyaygil.com.