Senior .NET Developer / Backend Architect based in Istanbul.
I build Clean Architecture systems, integration-heavy backends, cloud deployments, and AI-assisted product features.

• Backend and platform architecture with C#, .NET, ASP.NET Core, EF Core, CQRS/MediatR, and Clean Architecture.
• Multi-tenant systems, audit/history pipelines, domain events, background jobs, and resilient external integrations.
• Cloud-native delivery with Azure, Docker, Kubernetes, Linux, Nginx, GitHub Actions, and GitLab CI.
• AI-enabled workflows using OpenAI structured outputs, JSON Schema contracts, and asynchronous processing pipelines.
• Product-facing frontend work when needed with Next.js, React, TypeScript, Tailwind, and HeroUI.

• Building CleanArchitecture.Extensions, a NuGet ecosystem that adds production-ready cross-cutting primitives to Jason Taylor-style Clean Architecture projects without forking the template.
• Shipping backend and architecture work at Arneca Technologies across sustainability, fintech, merchant operations, healthcare, remote software delivery, and insurance projects.
• Improving AI-assisted development workflows with ChatGPT, OpenAI Codex, and GitHub Copilot.

• CleanArchitecture.Extensions - opt-in NuGet packages for Clean Architecture projects: MediatR behaviors, validation strategies, exception mapping, caching primitives, guard clauses, result types, and CI/CD-ready packaging.
• heidari.io - portfolio and case-study hub covering backend architecture, integrations, AI features, cloud deployments, healthcare systems, fintech, merchant operations, and industrial software.

• Keep domain logic explicit and testable.
• Make integrations observable, auditable, and resilient.
• Prefer boring infrastructure until the product actually needs more.
• Use AI tools to move faster, but keep engineering judgment in the loop.