Hire the Best C# Developers & Programmers
in Turkey

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Rating is 4.8 out of 5.
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Based on 250 client reviews
Baris U.

Izmir, Turkey

$50/hr
4.8
30 jobs

๐Ÿš€ ๐“๐จ๐ฉ ๐‘๐š๐ญ๐ž๐ ๐†๐š๐ฆ๐ž ๐„๐ง๐ ๐ข๐ง๐ž & ๐‘๐ž๐ง๐๐ž๐ซ๐ข๐ง๐  ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ž๐ซ & Game Developer As a ๐“๐จ๐ฉ ๐‘๐š๐ญ๐ž๐ Upwork freelancer, I help teams build high-performance, scalable game engines and rendering systems, from extending existing engine technology to developing custom engine systems from the ground up. I specialize in graphics programming, core engine architecture, and performance-critical game technology. My work focuses on building clean, scalable, and maintainable systems that support real production needs, not just short-term prototypes. ๐‚๐จ๐ซ๐ž ๐„๐ฑ๐ฉ๐ž๐ซ๐ญ๐ข๐ฌ๐ž: โ—™ ๐—š๐—ฎ๐—บ๐—ฒ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ ๐—”๐—ฟ๐—ฐ๐—ต๐—ถ๐˜๐—ฒ๐—ฐ๐˜๐˜‚๐—ฟ๐—ฒ Custom engine systems, modular architecture, ECS-based workflows, runtime systems, and long-term maintainability. โ—™ ๐—š๐—ฟ๐—ฎ๐—ฝ๐—ต๐—ถ๐—ฐ๐˜€ & ๐—ฅ๐—ฒ๐—ป๐—ฑ๐—ฒ๐—ฟ๐—ถ๐—ป๐—ด Rendering pipelines, GPU-oriented workflows, low-level rendering systems, and modern graphics API integration. โ—™ ๐—Ÿ๐—ผ๐˜„-๐—Ÿ๐—ฒ๐˜ƒ๐—ฒ๐—น ๐—ฃ๐—ฟ๐—ผ๐—ด๐—ฟ๐—ฎ๐—บ๐—บ๐—ถ๐—ป๐—ด C, C++, and C# development for performance-sensitive systems, tools, and engine-level features. โ—™ ๐—š๐—ฟ๐—ฎ๐—ฝ๐—ต๐—ถ๐—ฐ๐˜€ ๐—”๐—ฃ๐—œ๐˜€ DirectX 11, DirectX 12, Vulkan, and OpenGL. โ—™ ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ ๐—ฆ๐˜†๐˜€๐˜๐—ฒ๐—บ๐˜€ Physics and audio integration, resource and asset management, GPU-focused workflows, and production-ready technical foundations. โ—™ ๐—จ๐—ป๐—ถ๐˜๐˜† & ๐—จ๐—ป๐—ฟ๐—ฒ๐—ฎ๐—น ๐—˜๐—ป๐—ด๐—ถ๐—ป๐—ฒ Senior-level experience with Unity and intermediate experience with Unreal Engine, giving me practical insight into different engine architectures and real-world production workflows. โ—™ ๐—ง๐—ผ๐—ผ๐—น๐—ถ๐—ป๐—ด & ๐—ช๐—ผ๐—ฟ๐—ธ๐—ณ๐—น๐—ผ๐˜„๐˜€ Engine tooling, editor frameworks, ImGui-style tools, Git/GitHub collaboration, and CMake-based build systems. ๐–๐ก๐š๐ญ ๐ˆ ๐๐ซ๐ข๐ง๐  ๐ญ๐จ ๐๐ซ๐จ๐ฃ๐ž๐œ๐ญ๐ฌ: I bridge low-level engine development with practical production requirements. Whether you need to optimize an existing rendering system, extend your engine architecture, build internal tools, or develop core technology for a custom engine, I focus on solutions that are fast, reliable, and maintainable. My priority is not just making systems work. It is making them robust enough to scale with the project. If you are looking for a Top Rated developer who can work close to the engine layer, understand performance constraints, and build clean technical foundations for your game or rendering project, letโ€™s discuss your requirements.

  • C#
  • C++
  • Unreal Engine
  • Unity
  • C
  • Game
  • OpenGL Shading Language
  • Game Development
  • C++/CLI
  • OpenGL
  • Graphics Programming
  • DirectX
Abbas K.

Izmir, Turkey

$15/hr
5.0
22 jobs

Senior .NET Developer with 20+ years of experience building, fixing, modernizing, and extending business applications using C#, ASP.NET Core, Blazor, SQL Server, Web API, WinForms, WebForms, Telerik, DevExpress, and .NET Framework. I specialize in complex .NET business systems: solving production bugs, improving performance, optimizing SQL Server databases, modernizing legacy .NET applications, and adding reliable new features without breaking existing workflows. Available for small bug fixes, legacy system maintenance, SQL performance tasks, API integrations, and long-term .NET development. What I can help you with: ๐Ÿ”น .NET Backend & Web Development * C# development, .NET development, ASP.NET Core, ASP.NET MVC, Web API, and REST API * Backend development, API integration, third-party integrations, and business application development * Entity Framework, EF Core, LINQ, ADO.NET, repositories, migrations, and data access layers * Authentication, authorization, role-based access, and secure business workflows ๐Ÿ”น Blazor & Modern Web Applications * Blazor Server, Blazor WebAssembly, Blazor WASM, Blazor PWA, and Razor components * Business dashboards, admin panels, internal tools, reporting interfaces, and workflow systems * Telerik UI for Blazor, Telerik Reporting, TRDX reports, and custom reporting solutions ๐Ÿ”น SQL Server & Database Performance * SQL Server development, database design, T-SQL, stored procedures, views, triggers, and functions * Query optimization, indexing, performance tuning, slow report troubleshooting, and database refactoring * Data migration, database cleanup, reporting databases, and business data structures ๐Ÿ”น Legacy .NET Modernization * ASP.NET WebForms, ASPX applications, .NET Framework applications, WinForms, and WPF * Legacy application maintenance, bug fixing, refactoring, and safe modernization * Migration from older .NET Framework systems to modern .NET, ASP.NET Core, Blazor, or API-based architecture * DevExpress WinForms, Telerik components, desktop UI modernization, and reporting system upgrades ๐Ÿ”น Automation, Integration & AI * OpenAI API, ChatGPT API, AI integration, chatbot features, and AI-powered business tools * Web scraping, Puppeteer automation, browser automation, API scraping, and data extraction * RabbitMQ, background services, Windows Services, scheduled jobs, CQRS, modular systems, and workflow automation I have hands-on experience with accounting software, sales systems, warehouse and inventory systems, treasury systems, CRM, ERP-style applications, healthcare systems, reporting platforms, admin panels, dashboards, and other database-driven business applications. Why clients work with me: โœ… 20+ years of practical software development experience โœ… Strong debugging and root-cause analysis skills โœ… Experience with both modern .NET and legacy .NET Framework systems โœ… Ability to understand large existing codebases and improve them safely โœ… Strong SQL Server, reporting, backend, and business application experience โœ… Clean, maintainable, stable, and performance-focused solutions โœ… Focus on reliability, long-term maintainability, and real business needs Typical projects I can support: * Build a new ASP.NET Core, Blazor, or Web API application * Fix bugs in an existing .NET, WebForms, WinForms, WPF, or SQL Server system * Modernize legacy .NET Framework applications * Improve SQL Server performance and slow reports * Add new modules to accounting, inventory, CRM, ERP, or internal business systems * Integrate third-party APIs, payment services, AI tools, or automation workflows * Maintain and extend long-running business applications safely Core technologies: C#, .NET, .NET Core, .NET Framework, ASP.NET Core, ASP.NET MVC, ASP.NET Web API, Web API, REST API, Blazor, Blazor Server, Blazor WebAssembly, Blazor WASM, PWA, WinForms, Windows Forms, WPF, WebForms, ASPX, Entity Framework, EF Core, ADO.NET, LINQ, SQL Server, T-SQL, Stored Procedures, SQL optimization, Telerik, Telerik UI for Blazor, Telerik Reporting, DevExpress, DevExpress WinForms, RabbitMQ, CQRS, Windows Services, background services, Puppeteer, browser automation, web scraping, API integration, OpenAI API, ChatGPT API, and AI integration. If you need a senior .NET developer, C# developer, ASP.NET Core developer, backend developer, Blazor developer, SQL Server developer, desktop application developer, Web API developer, Telerik developer, DevExpress developer, web scraping developer, or legacy application modernization specialist, I can help you build, fix, optimize, or modernize your application.

  • C#
  • .NET Framework
  • .NET Core
  • ASP.NET Core
  • Web API
  • Blazor
  • Windows Forms
  • Microsoft SQL Server
  • Entity Framework
  • Transact-SQL
  • LINQ
  • ADO.NET
  • Telerik
  • DevExpress
  • Web Scraping
  • Data Extraction
  • OCR Software
  • Web Form
Babak M.

Kayseri, Turkey

$30/hr
5.0
12 jobs

Iโ€™m an AI Architect and Full-Stack developer focused on Azure OpenAI, Microsoft Fabric, RAG systems, .NET and Python. For more than 20 years Iโ€™ve been building end-to-end software solutions; in recent years my work has shifted almost entirely to Azure-based AI: RAG copilots, data agents, and smart workflows that sit on top of real business data (documents, spreadsheets, databases). What I do for clients: โ€ข Design and build RAG assistants using Azure OpenAI + Azure AI Search so users can ask questions in natural language and get grounded, source-linked answers. โ€ข Create data pipelines on Microsoft Fabric (Dataflow Gen2, Lakehouse, Delta tables, PySpark Notebooks) to clean, join and prepare billing, shipment and operational data. โ€ข Develop serverless indexers with Azure Functions + Blob Storage to ingest PDFs, templates and project files, enriching them with metadata for precise retrieval. โ€ข Implement robust .NET backends (C#, ASP.NET Core, Blazor) for APIs, authentication and post-processing of AI output (JSONโ†’tables, validation, saving to SQL). โ€ข Build Blazor-based UIs so non-technical users can safely work with AI features in a familiar web interface. Iโ€™ve delivered production work for international clients (logistics, consulting, public sector) including: โ€ข A logistics copilot that connects Lakehouse tables and document indexes so teams can analyse shipping costs and rules without living in spreadsheets. โ€ข An assistant that auto-generates structured deliverables (plans, stakeholder matrices, trackers) from a short prompt, fully aligned to the clientโ€™s own templates. โ€ข A smart assessment/forms solution that turns PDFs into digital workflows, guides users step-by-step, and validates answers with RAG. I also run my own AI startup, supported by Microsoft for Startups with Azure credits, which I use to prototype and harden Azure-native AI architectures before applying them to client projects. If you need a practical Azure AI solution (RAG copilot, data platform or intelligent workflow) and want someone who can handle architecture, data engineering and code in one place, Iโ€™d be happy to discuss your project.

  • C#
  • Web Application
  • Artificial Intelligence
  • Web Development
  • Microsoft Azure
  • Blazor
  • Python
  • Azure Machine Learning
  • Azure OpenAI Service
  • AI Development
  • JavaScript
  • Microsoft SQL Server
  • .NET Core
  • Retrieval Augmented Generation
  • Azure Cognitive Services
Baris C.

Istanbul, Turkey

$120/hr
4.9
51 jobs

10+ years of experience on Unix-based operating systems (MacOS, Linux) Deep knowledge of CPU architectures, memory management 10+ years of C++/Qt desktop GUI development experiences 5+ years of kernel driver, low-level communication protocol development 5+ years of RTOSes, baremetal systems, task scheduling and threading 10+ years of network communication and socket programming Extensive knowledge of web technologies and desktop software development Strong documentation, testing and coding skills Keywords: c++, embedded, opengl, git, cmake, gcc, clang, travis CI, unit test, java, Linux, android, ios, php, sql, c++11, c++14, c++17, agile, engineering, mathematics, physics

  • C++
  • C
  • OpenGL
  • Qt Framework
  • Eigen
  • Multithreaded Programming
  • Socket Programming
  • Industrial Automation
  • MQTT
  • QML
  • Machine Learning
  • macOS
  • OpenVPN
  • PLC
  • Kernel
Melisa A.

Ankara, Turkey

$25/hr
5.0
3 jobs

๐Ÿš€ Industrial Engineer & Software Developer โœ… 17+ Real-World .NET & C# Projects Delivered โœ… Specializing in ASP.NET Core, Entity Framework, Angular & SQL โœ… Fluent in English (C1) โ€“ Ready for international collaboration I help businesses design and build secure, maintainable, and high-performing software solutions using modern .NET and C# technologies and best architectural practices. With a background in industrial engineering and strong training in software development, I bridge the gap between business logic and high-quality code. ๐Ÿ› ๏ธ What I Bring: - Real-World Experience: Delivered 17+ projects covering e-commerce, booking systems, admin panels, and RESTful APIs. - Modern Technologies: ASP.NET Core 8, C#, Angular, Entity Framework Core, SQL Server, MongoDB, Redis, AutoMapper, JWT, Identity, CQRS & MediatR. - Clean Code Architecture: Implementing N-Tier, Clean Architecture, Onion Architecture, and Repository Patterns. - Front-End Expertise: Angular, jQuery, AJAX, Bootstrap, and Razor Views for responsive and user-friendly UIs. - Strong Problem Solving: Engineering mindset combined with agile development principles for efficiency and clarity. - API Integrations: Built projects with third-party APIs (RapidAPI), RESTful designs, and authentication flows. ๐Ÿ“ฆ Project Highlights: - E-Commerce Microservice Platform: Microservice architecture with IdentityServer4, Redis, MongoDB, PostgreSQL, and Docker. - Car Rental Platform: Full-featured .NET Core MVC project with layered architecture, Identity, AutoMapper, and FluentValidation. - Travel Blog & Admin Panel: SQL-based CMS with authentication, CRUD, and responsive UI using Bootstrap and Razor. ๐ŸŽ“ Certifications & Education: 1) Full Stack .NET Core & C# Development Bootcamp (250+ hours) 2) BSc in Industrial Engineering โ€“ Dokuz Eylul University 3) Ongoing BSc in Management Information Systems โ€“ Anadolu University ๐Ÿงฐ My Tech Stack: - Languages & Frameworks: C#, ASP.NET Core, .NET 8, MVC, Web API, JavaScript, Angular, jQuery - Database & ORM: SQL Server, MongoDB, PostgreSQL, Entity Framework Core, Dapper - Architecture & Patterns: Clean Architecture, CQRS, MediatR, Repository Pattern - Tools: GitHub, Docker, Swagger, Postman, AutoMapper, FluentValidation - UI/UX: HTML5, CSS3, Bootstrap, AJAX, Razor Pages ๐Ÿ“ˆ Letโ€™s Build Something Great Whether you need to upgrade your web app, build an efficient backend, or launch a full-stack solution from scratch โ€” Iโ€™m here to deliver clean, well-documented, and scalable results. I value clear communication, clean code, and client satisfaction above all. ๐Ÿ“ฉ Message me now to discuss your project โ€” and letโ€™s bring your idea to life with robust .NET and C# solutions.

  • C#
  • ASP.NET
  • ASP.NET Core
  • ASP.NET MVC
  • ASP.NET Web API
  • Angular
  • Entity Framework
  • Web Development
  • .NET Framework
  • RESTful API
  • AJAX
  • Microsoft SQL Server
  • PostgreSQL
  • MongoDB
  • Redis
Goktug U.

Istanbul, Turkey

$20/hr
4.9
6 jobs

Senior Unreal Engine Generalist with 10+ years of experience. Founded Crania, published 4 titles, developed certified simulations, and contributed to 20+ projects. Also a recipient of the Epic Games MegaGrant, holds Unreal Instructor Certifications.

  • Unreal Engine
  • Game Development
  • Technical Design
  • AR & VR Development
  • C++
  • Multiplayer
  • Database Integration
  • API Integration
  • Game Mechanics
  • Game Development Bug Fix
  • Game Prototype
  • Architectural Walkthrough
  • System Programming

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