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I build and integrate backend APIs using C#, ASP.NET Core Web API, SQL, PostgreSQL, and REST-based services. I can help with third-party API integration, REST API development, backend bug fixes, database-connected endpoints, authentication-related tasks, Swagger/OpenAPI documentation, and API testing. My portfolio includes an ASP.NET Core Weather API Wrapper with external API integration, Redis caching, standardized error handling, Swagger documentation, and HTTP resilience policies such as retry, timeout, and circuit breaker. I also have an e-commerce API project using ASP.NET Core, Entity Framework Core, PostgreSQL, JWT authentication, and Docker Compose. Services I can help with: • ASP.NET Core Web API development • Third-party API integration • REST API design and implementation • SQL / PostgreSQL backend work • JWT authentication • Swagger / OpenAPI documentation • API testing and debugging • Backend maintenance and bug fixing I focus on readable code, practical implementation, and clear communication.

🚀 Industrial Engineer & Software Developer ✅ 17+ Real-World .NET & C# Projects Delivered ✅ Specializing in ASP.NET Core, Entity Framework, Angular & SQL ✅ Fluent in English (C1) – 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. 🛠️ 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. 📦 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. 🎓 Certifications & Education: 1) Full Stack .NET Core & C# Development Bootcamp (250+ hours) 2) BSc in Industrial Engineering – Dokuz Eylul University 3) Ongoing BSc in Management Information Systems – Anadolu University 🧰 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 📈 Let’s Build Something Great Whether you need to upgrade your web app, build an efficient backend, or launch a full-stack solution from scratch — I’m here to deliver clean, well-documented, and scalable results. I value clear communication, clean code, and client satisfaction above all. 📩 Message me now to discuss your project — and let’s bring your idea to life with robust .NET and C# solutions.

I help startups and businesses build scalable SaaS platforms, enterprise applications, and full-stack web solutions using C#, ASP.NET Core, React, Next.js, and modern cloud-ready architectures. I focus on building production-ready systems that are secure, maintainable, and designed for long-term growth. 🧩 Core Expertise I specialize in building and optimizing: • SaaS applications and business platforms • Full-stack web applications using ASP.NET Core and React • Backend systems with C# and .NET • REST API development and third-party integrations • Authentication and authorization systems (JWT, OAuth, Role-Based Access Control) • Database design and optimization • Enterprise application development • Admin dashboards and internal business tools • Performance optimization and scalable architecture • Modern frontend development with React and Next.js ⚙️ Tech Stack Backend: C#, .NET, ASP.NET Core, Entity Framework Core, REST APIs Frontend: React.js, Next.js, TypeScript, JavaScript, Tailwind CSS Database: SQL Server, PostgreSQL, MySQL Cloud & DevOps: Docker, Azure, AWS (basic), CI/CD Other: Authentication Systems, API Integration, Clean Architecture, Microservices 🚀 What I Deliver • Scalable SaaS and business applications • Secure and maintainable ASP.NET Core backends • Modern React and Next.js frontends • Production-ready REST APIs • Authentication and authorization systems • Database architectures optimized for performance and growth • Clean, maintainable, and well-documented code 🤖 AI-Enhanced Development Workflow I leverage modern AI-assisted development tools to improve development speed, implementation quality, and delivery efficiency. This allows projects to move faster while maintaining strong engineering standards, clean architecture, and long-term maintainability. 💡 Development Approach I don't just write code; I build systems that: • Scale with growing businesses • Support real-world business processes • Prioritize security, performance, and maintainability • Minimize technical debt from the beginning • Remain easy to extend and operate over time 🎯 Ideal Clients I work best with: • SaaS founders building scalable products • Businesses developing internal platforms and business applications • Companies modernizing legacy systems with .NET technologies • Teams looking for a Full-Stack .NET Developer with React expertise • Startups needing both backend and frontend ownership Why clients keep working with me – Honest time estimates. – Strong ownership and accountability. – Clear communication throughout the project. – Focus on long-term success, not just task completion. If you're building a SaaS platform, business application, or full-stack web product and need someone who can handle both ASP.NET Core backend development and modern React/Next.js frontend implementation, I'd be happy to help. C# Developer, .NET Developer, ASP.NET Core Developer, Full Stack Developer, React Developer, Next.js Developer, TypeScript Developer, ASP.NET Developer, Backend Developer, Frontend Developer, REST API Development, Entity Framework Core, SQL Server, PostgreSQL, SaaS Development, Business Applications, Authentication Systems, Enterprise Software Development, Scalable Web Applications

İsmail Sarıkaya I am a Full Stack Senior .NET Software Developer with 18 years of commercial experience. I have worked in several industries, including FinTech, Accounting, Healthtech, and Payment systems. Using modern technologies, I write elegant, safe, robust, and scalable code. I studied Computer Technology and Programming in the university. My areas of interest include software development, database design and administration, and full-stack web development. I speak English and Turkish fluently.

I'm full-stack, cross-platform dotnet developer with 12+ years of experience. I've worked extensively with Microsoft Technologies. I'm fluent in C# and I can develop on the web (ASP.Net MVC Core / Angular ) & Blazor Web Assembly. I can develops mobile apps (Xamarin / MAUI ) using Microsoft Cross-platform with a single source that run on Android/iOS/Windows. I'm also experienced on desktop application development. I Can develop desktop application (WPF / MVVM ) using Microsoft Cross-platform for MacOS/Linux I've worked extensively with Azure/AWS Cloud platforms for DevOps / Active Directory / Cloud Databases / Nu-Sql Databases

👋 Hi, I’m Enes Civelek — a passionate .NET Developer from Istanbul with hands-on experience in building modern, scalable, and user-focused web applications. 💻 Technical Skills Back-End: ASP.NET Core (MVC), C#, Entity Framework Core Database: SQL Server (relational design, optimization, queries) Front-End: HTML5, CSS3, JavaScript, Bootstrap Other: REST API integrations, Authentication & Authorization, Admin Panels 🛠️ What I Can Build for You • 🍽️ Restaurant & Reservation Systems • 🛍️ E-commerce Features (Cart, Orders, Payments) • 📊 Custom Admin Dashboards • 📝 Blog & Content Management Platforms • 🔗 3rd-Party API Integrations (Weather, Finance, etc.) 🎯 My Development Approach • Clean, maintainable, and scalable code 🧼 • High performance & security best practices ⚡ • User-friendly UI & seamless UX 🎨 • Clear communication and on-time delivery ⏰ 💡 Whether you need a simple CRUD system, a full-featured web app, or improvements to your existing .NET project — I’ll help you turn your ideas into reliable, production-ready software. 📬 Let’s collaborate and build something amazing together!