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I will be your dotnet backend developer for apis and web apps
Serhat S
About this gig
Hi, I'm Serhat - a full stack developer who builds production SaaS platforms, not toy projects.
I currently develop multi-tenant SaaS systems on .NET 10 and ASP.NET Core with Next.js frontends: dormitory management, physical access control and CRM platforms serving real customers.
BACKEND
- REST APIs with ASP.NET Core and Entity Framework Core
- Multi-tenant SaaS with full tenant isolation
- Auth: JWT, refresh tokens, two-factor, role and permission systems
- PostgreSQL and SQL Server design, indexing and query optimisation
- Real-time features with SignalR
- Payment integrations, PDF and Excel generation, reporting
FRONTEND
- Next.js, React and TypeScript
- Admin panels and dashboards with Tailwind CSS
- Forms, validation, tables, charts and file uploads
DEVOPS
- Docker, CI/CD with GitHub Actions, OpenTelemetry observability
HOW I WORK
Clean Architecture and Domain-Driven Design. Every feature ships with tests. You get readable, maintainable code plus documentation - not something you will need to rewrite in six months.
Message me before ordering so I can confirm the scope and give you an accurate quote.
Get to know Serhat S
Serhat S
NET Backend Engineer
- FromTurkey
- Member sinceDec 2022
- Avg. response time1 hour
Languages
English, Turkish
I am a .NET Backend Engineer specializing in designing multi-tenant platforms with ASP.NET Core, Clean Architecture, and Domain-Driven Design. I have experience building scalable enterprise systems handling real-time access control, CRM workflows, and containerized deployments using Docker Swarm and CI/CD pipelines. I work across the full backend stack, focusing on security, data protection, and observability.
My Portfolio
Other Software Development Services I Offer
FAQ
What information do you need to get started?
A description of what you are building, your main features, and any existing code, database schema or API spec. If you are starting from scratch, a short written brief is enough.
Do I get the source code?
Yes. You receive the full source code and own it completely, delivered through a Git repository or as an archive, whichever you prefer.
Do you build the frontend as well?
Yes. I work with Next.js, React, TypeScript and Tailwind CSS, so I can deliver a working admin panel or dashboard, or connect the API to your existing frontend.
Can you work with my existing codebase?
Yes. I regularly work on established .NET projects: refactoring, adding features, fixing bugs, writing tests and improving database performance.
