Senior Software Engineer (.NET)

Senior Software Engineer (.NET)

Miejsce pracy: Kraków

Technologies we use

Expected

• PHP
• .NET
• C#
• Entity Framework
• SQL
• ASP.NET

Optional

• Active Directory
• Playwright
• Azure DevOps

About the project

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.

Your 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

Our 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

Optional

• 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

What we offer

• Work on a mature enterprise product used globally
• Private healthcare
• Real influence on technical decisions and platform evolution
• Multisport
• International environment and collaboration with global teams
• Life insurance
• Opportunity to work with modern .NET technologies and large-scale systems

Benefits

• sharing the costs of sports activities
• private medical care
• life insurance

BRAVER IT SPÓŁKA AKCYJNA

As Venture Building, we create profitable technology companies from scratch. We collaborate with partners who share similar aspirations and are open to leveraging the potential of their networks, cultivated over years. We regularly launch new projects founded on long-term, amicable relationships with our associates.

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