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Middle C# Developer for MS365

Veeam Software - Warsaw, Poland - In-office - posted 2026-10-22

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Veeam Software, the Data and AI Trust Company, is seeking a Middle C# Developer to join the team developing Veeam Backup for Office 365, one of the company's core products. This role focuses on building and maintaining backup and data resilience solutions for Microsoft 365 environments. You will be responsible for developing and supporting Veeam Backup for Office 365, communicating with other members of the product development team, and participating in planning and feature creation. The role involves working with modern C# and .NET technologies in a collaborative environment. The tech stack includes: C# (with some C++/C++/CLI), REST APIs, PowerShell, .NET 8, Visual Studio 2022, Rider, Azure DevOps, Git, Jenkins, TeamCity, Azure, Office 365, Amazon Web Services, Google Cloud, Exchange, SharePoint, Active Directory, SQL Server, Oracle, and PostgreSQL. Veeam is headquartered in Seattle with offices in over 30 countries and protects more than 550,000 customers worldwide. The company emphasizes learning, growth, and making a real impact for major global brands. Requirements: - Good knowledge of C# language - Deep understanding of the Windows platform (.NET, Win API), data structures, and algorithms - Advanced knowledge of Windows or Linux operating systems - Open and flexible mindset, common sense, clear logic, analytical skills, and ability to work in a team Advantages: - Experience developing for public clouds (Microsoft Azure, Office 365) - Experience with Microsoft Exchange, SharePoint, Active Directory, SQL Server, Oracle, or PostgreSQL - Experience in commercial product development for mass-market applications

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