About
Mohammadreza (Reza) Heidari
I usually work best where backend systems need clearer boundaries, safer integrations, better deployment discipline, or a practical path out of legacy complexity.
Istanbul, Turkey
Senior .NET Backend Architect
APIs, Clean Architecture, Azure, Docker/Kubernetes, OpenAIBackend and architecture lead specializing in .NET, Clean Architecture, CQRS/MediatR, cloud-native delivery, deterministic trading/research systems, and resilient integrations across healthcare, fintech, SaaS, AI, and hardware-adjacent platforms.
Engineering Profile
My work is less about chasing a fashionable stack and more about turning business-critical workflows into systems that are explicit, observable, and maintainable after release.
I am comfortable entering existing codebases, reading the shape of the system first, and making changes that respect the product, the team, and the operational reality around it.
How I Think About Engineering
Design for production support
Retries, logs, external IDs, idempotency, deployment shape, and diagnostics matter as much as the first successful API response.Modernize without drama
Legacy systems often need careful seams, preserved workflows, and incremental migration paths rather than a risky rewrite.Use architecture pragmatically
Clean Architecture, CQRS, and domain boundaries are useful when they reduce complexity, not when they become ceremony.Best-Fit Problems
- Integration-heavy platforms with messy upstream systems
- Legacy .NET modernization where business behavior must be preserved
- Backend architecture cleanup for APIs, SaaS, and internal operations tools
- Healthcare, banking, SaaS, AI, and hardware-adjacent workflows that need reliable server-side behavior
- Teams that need a senior engineer who can move carefully inside an existing system
Working With Me
- Read the codebase and domain flow before changing structure
- Communicate trade-offs clearly and keep implementation scope controlled
- Favor boring, observable, supportable systems over clever hidden complexity
- Bridge product needs, backend design, deployment, and operational troubleshooting
Certifications and Education
- RU102N: Redis for .NET Developers - Redis University (2023)
- Certificate in Information Systems Management - Aptech Worldwide (Distinction)
- Professional Certificate in Visual Basic Programming
- Vocational Diploma of Computer Science