Position: VSTO Developer Location: Gurugram, Haryana Work Mode: Work from Office (5 days a week) Years of Exp: 3\+ Years Type of Hiring: Contract Duration: 6 Months Job Summary We are looking for an experienced VSTO Add\-In Developer with strong expertise in Microsoft Office automation and COM\-based development. The ideal candidate should have hands\-on experience developing enterprise\-grade VSTO Add\-Ins for Microsoft Word, Excel, and PowerPoint, along with deployment and troubleshooting experience across multiple Office versions. Key Responsibilities Design and develop VSTO Add\-Ins for Microsoft Word, Excel, and PowerPoint. Implement Word automation features including: Content Controls, Bookmarks, Styles, Track Changes, Custom XML Parts Implement Excel automation features including: Workbook/Worksheet events, Named Ranges, UDFs, PivotTables, Chart automation, Data Validation Implement PowerPoint automation features including: Slide and Shape manipulation, Masters \& Layouts, Template generation, Embedded media control Develop and maintain custom Ribbon XML and Task Panes across Office applications. Package and deploy Add\-Ins using NSIS installer scripts, including: Registry configuration, Trust settings, Versioning Ensure compatibility across Office 2016, 2019, 2021, and Microsoft 365 (32\-bit \& 64\-bit). Debug COM Interop, PIA binding, and Office runtime/process isolation issues. Write clean, scalable, and maintainable C\# code. Participate in code reviews and technical discussions. Required Skills Strong hands\-on experience with VSTO Add\-In development. Expertise in C\#, .NET, COM Interop, Microsoft Office Automation. Strong experience with Word, Excel, and PowerPoint object models. Experience with Ribbon XML and Custom Task Panes. Knowledge of NSIS installer scripting and deployment processes.
Job Types: Full\-time, Contractual / Temporary
Contract length: 6 months
Pay: ₹65,000\.00 \- ₹70,000\.00 per month
Work Location: In person