Office Add-ins Developer – Roles And Responsibilities

Location: Bangalore

Employment Type: Full Time / Contractual

Experience: 3-6 Years

Primary Skill: C#, .NET, Office Add-ins Development

Secondary Skill: Node.js, JavaScript / TypeScript, Office.js

Work Type: Hybrid / Office as per project requirement

Job Summary

We are looking for an experienced Office Add-ins Developer with robust hands-on expertise in C#, .NET, VSTO / COM Add-ins, and Microsoft Office application integration.

The candidate should be able to design and develop stable, secure, and high-performance add-ins for Microsoft Office applications such as Word, Excel, PowerPoint, and Outlook. Knowledge of Node.js, JavaScript / TypeScript, and Office.js will be an added advantage for modern Office Web Add-ins development.

Key Responsibilities

Office Add-ins Development

Design and develop Microsoft Office add-ins using C#, .NET, VSTO, COM Add-ins, and Office Interop APIs.
Build add-in features for Microsoft Word, Excel, PowerPoint, and Outlook.
Work with Office object models, Ribbon customization, task panes,



event handlers, and document-level operations.
Develop reusable components and libraries for Office add-in functionality.
Ensure add-ins are stable, responsive, and compatible with supported Office versions.

C# / .NET Development

Develop application logic using C#, .NET Framework / .NET, and Visual Studio.
Work with Office events such as open, save, close, send, attachment handling, and user actions.
Implement document, email, attachment, and metadata-related workflows.
Write clean, maintainable, secure, and testable code.
Participate in technical design discussions and code reviews.

Office Application Integration

Develop features for Outlook email compose, read, send, and attachment workflows.
Develop features for Word, Excel, and PowerPoint document processing.
Handle document properties, metadata, headers, footers, watermarks, labels, and user prompts where required.
Manage Office app

📌 Office Add-ins Developer (Bengaluru)
🏢 SISA
📍 Bengaluru