Senior VSTO & WPF Developer

We are hiring a Senior VSTO Developer with extensive experience building Microsoft Office add-ins using C#, .NET, VSTO, and WPF. The ideal candidate should have strong expertise in Office automation and enterprise application development with a focus on scalability, performance, and seamless integrations.

Role Summary The role involves designing and developing enterprise-grade add-ins for Microsoft Excel, Word, and PowerPoint. You will work closely with cross-functional teams to build robust Office solutions integrated with APIs, cloud platforms, and enterprise systems.

Key Responsibilities

- Develop and maintain Microsoft Office add-ins using C# and .NET
- Build custom ribbons, task panes, and UI components using VSTO and WPF
- Create advanced automation solutions for Excel, Word, and PowerPoint
- Integrate Office solutions with REST APIs, backend services, and third-party applications
- Ensure application scalability, maintainability, and high performance
- Follow enterprise architecture standards and best development practices
- Troubleshoot and resolve complex Office Interop and COM-related issues
- Participate in deployment, enhancement,



and production support activities

Required Experience & Skills
- 7+ years of professional experience in C# and .NET development
- 7+ years of hands-on experience with VSTO development
- Strong expertise in WPF and MVVM design pattern
- Deep understanding of Microsoft Office Object Models (Excel, Word, PowerPoint)
- Experience working with App Services, Microsoft Azure Functions and Office automation
- Work with SharePoint Online document libraries, metadata management, and SharePoint repositories
- Solid problem-solving, debugging, and performance optimization skills
- Experience building enterprise-level scalable applications

Good to Have

- Experience with Office.js / Web Add-ins
- Exposure to cloud-based integrations and microservices
- Knowledge of SQL Server and database integrations
- Familiarity with deployment tools and CI/CD processes
- Location - Remote
- Duration - 3+ months

Candidates with strong VSTO expertise and experience building enterprise Office add-ins are encouraged to apply.

📌 Senior VSTO & WPF Developer (India)
🏢 Zansys Technologies
📍 India