Senior Software Engineer (.NET)

We are looking for an experienced Senior Software Engineer to develop and maintain a complex enterprise .NET platform used by global organizations. This role combines backend development, production troubleshooting, performance optimization, and work on identity-related systems.

💼 Responsibilities:

• Design, develop, and maintain backend services built with C# and .NET

• Investigate and resolve complex production issues and customer-reported problems

• Optimize application performance, database queries, and system reliability

• Collaborate with Product, Support, and Engineering teams on technical solutions

• Improve architecture, code quality, and engineering standards

• Participate in technical discussions and contribute to future platform development

✅ Requirements:

• 5+ years of commercial experience with C# and .NET

• Strong knowledge of ASP.NET Core and modern .NET applications

• Experience with asynchronous programming and dependency injection

• Hands-on experience with Entity Framework Core

• Good understanding of SQL Server, query optimization, and database performance

• Experience with OAuth2, OpenID Connect, JWT

• Experience supporting and troubleshooting production systems

• Fluent English communication skills

🌟Nice to have:

• Experience with IdentityServer / Duende IdentityServer

• Understanding of Active Directory, Azure AD or Microsoft Graph

• Hands-on experience with Quartz.NET or similar scheduling frameworks

• Familiarity with SignalR, Playwright, Azure DevOps and CI/CD pipelines

🎁 We offer:

• Work on a mature enterprise product used globally

• Influence technical decisions and platform evolution

• Private healthcare

• Life insurance

• Multisport

• Opportunity to work with modern .NET technologies and large-scale systems