.NET Backend Developer

LinkGroup is recruiting for experienced Senior .NET Developers to work on complex business systems based on ASP.NET Core, C#, and Entity Framework Core. The role involves backend development with expertise in distributed systems, web application security, and designing scalable and performant solutions.

• Strong knowledge of ASP.NET Core, C#, and Entity Framework Core.
• Experience with relational databases.
• Practical understanding of web application security.
• Proficiency with Dependency Injection mechanisms in .NET including lifetime management.
• Ability to manage resources correctly, for example using IHttpClientFactory.
• Familiarity with communication and architecture patterns in distributed systems such as CQRS, Clean Architecture, Saga Pattern, messaging, queues, and event-driven designs.
• Skills in designing performant and scalable solutions.
• Awareness that small-scale solutions may not work correctly for multi-client, high-volume scenarios.
• Willingness to work in an AI-supported model managing and verifying work of AI agents.
• Independence and responsibility for code quality and technical decision-making.

Nice to have:

• Experience with rate limiting technologies like Redis, Azure API Management, or Application Gateway.
• Experience with cloud tools and services.
• Practical experience with AI agents such as Claude Code, GitHub Copilot with custom instructions, or similar.
• Knowledge of Angular or willingness to learn frontend development aiming towards fullstack role.
• Experience with complex business systems (accounting, HR, ERP, hardware integrations).
• Experience designing multi-tenant systems.

• Design and develop backend applications in ASP.NET Core and C#.
• Work with Entity Framework Core and relational databases.
• Design distributed architecture solutions including reliable communication, distributed transactions, and event-driven patterns.
• Develop and maintain APIs and system integrations.
• Ensure web application security and proper management of dependencies, resources, and configuration.
• Design scalable solutions suitable for multi-tenant environments.
• Analyze performance bottlenecks and propose solutions for large-scale systems.
• Utilize AI tools and agents for code generation, refactoring, and development support.
• Verify AI-generated code for quality, security, maintainability, and architectural compliance.
• Collaborate with the team on architecture design, code reviews, and technical standards.