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English
$
USD
I will develop office addin plugins
Mohammad Zain
Level 1
5.0
5.0
About this gig
Custom Microsoft Office Add-ins | Outlook, Excel, Word & PowerPoint Automation
Tired of repetitive tasks slowing your team down in Microsoft Office? I build custom, AI-powered Add-ins that automate your workflows and integrate seamlessly with Microsoft 365 on Windows, Mac, and Web.
What I Build:
- Outlook Smart replies, email routing & calendar automation
- Excel Live dashboards, data processing & one-click reporting
- Word / PowerPoint Auto-generated documents & branded templates
- AI Add-ins ChatGPT & OpenAI or other leading AI technologies built directly inside your Office apps
- Graph API Teams, SharePoint, OneDrive & Azure AD integration
Why Choose Me:
- 100% custom-built for your exact workflow
- Works on Windows, Mac & Office Web
- Full source code ownership no lock-in
- Clean, native Fluent UI design
- Fast delivery & post-delivery support
Tech Stack:
React · TypeScript · Office.js · Fluent UI · Node.js · Microsoft Graph API · Azure AD · OAuth2 · ChatGPT/OpenAI
Message me with your use case and let's build an add-in that saves your team hours every week at an affordable price.
Get to know Mohammad Zain
Mohammad Zain
AI Automation for Office Addins,Zapier,Make,n8n,Google Apps,Electron,Chrome Ext
Level 1
- FromPakistan
- Member sinceJun 2025
- Avg. response time1 hour
- Last delivery3 weeks
Languages
Urdu, Hindi, English, Korean, Spanish, French
Professional developer specializing in Office Add-ins, Google Workspace Add-ons, Chrome Extensions, Cross-Platform Desktop Apps and AI-powered automation. I build intelligent solutions for Outlook, Word, Excel, and Google Sheets using React, TypeScript, Electron.js, and Graph APIs. Expert in automation with Zapier, Make.com, n8n & REST APIs. I deliver scalable, secure, and production-ready tools end-to-end.
My Portfolio
Other Software Development Services I Offer
FAQ
What types of Office Add-ins do you develop?
I develop custom Office Add-ins for Outlook, Excel, Word, and PowerPoint, including task automation, document interaction, UI customization, and smart AI features. All add-ins are fully compatible with Office 365 on desktop, web, and mobile.
Can you integrate AI tools like ChatGPT into Office 365 Add-ins?
Yes, I can integrate OpenAI (ChatGPT) into your Office Add-ins to enable smart replies, task automation, and intelligent productivity features. This is ideal for improving user experience and efficiency.
Do your add-ins support enterprise security?
Absolutely. All Office 365 Add-ins are built with Microsoft Graph API, Azure Active Directory, and OAuth2 for secure authentication and data access, following enterprise-grade security standards.
What technologies do you use for Office Add-in development?
I use JavaScript, TypeScript, React, MUI (Material-UI), Fluent UI, and the Microsoft Office JavaScript API for frontend development. For backend systems, I use Node.js and MongoDB to build scalable, secure, and high-performance solutions.
Will the Office Add-in work across devices?
Yes, I ensure that every Outlook Add-in, Excel Add-in, or Word Add-in is fully functional across Office 365 desktop, web, and mobile platforms.
Can you customize an existing Office Add-in?
Yes, I can enhance, debug, or add new features to your existing Office 365 Add-ins—whether it's an Outlook, Excel, or Word integration.
How long does it take to build a custom Office Add-in?
Delivery time depends on the complexity of your requirements. Simple Outlook or Excel Add-ins can be done within a few days, while complex integrations may take longer. I’ll provide a clear estimate after reviewing your needs.
Reviews
6 reviews for this Gig
| (6) | ||
| (0) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
C catileogmbh
Repeat Client
Germany
I hired Mohammad to develop also phase 2 of my application, and he exceeded my expectations once again. I would hire him again anytime.
$400-$600
Price
2 weeks
Duration
Z 
Seller's Response
Helpful?C catileogmbh
Repeat Client
Germany
The Mohammad clearly exceeded my expectations in every aspect of this project. Communication was always clear and proactive, and the technical execution was very solid. What really stood out was the strong commitment to the project and the willingness to think along with me beyond the initial scope...
$1,000-$1,500
Price
4 weeks
Duration
Z Seller's Response
Helpful?Z zarkeem_vollor
Repeat Client
United Kingdom
Exceptional work as always! Zain delivered a highly professional and perfectly functional Excel Add-in that exceeded my expectations. His attention to detail, clear communication, and strong understanding of Microsoft Office integration made the whole process smooth and efficient. The Add-in works flawlessly...
Up to $50
Price
2 days
Duration
Z Seller's Response
Helpful?Z zarkeem_vollor
Repeat Client
United Kingdom
Zain is an exceptional developer! He built a custom Outlook Add-in for me that works flawlessly and integrates perfectly with my workflow. His understanding of Office Add-ins, React, and the Microsoft ecosystem is outstanding. Communication was smooth, delivery was on time, and he went above and beyond...
Up to $50
Price
2 days
Duration
Helpful?H holofira122
United States
I had an amazing experience working with Zain. He built a professional and modern Office Add-in for me with advanced features and a clean, user-friendly interface. Everything was delivered exactly as promised, smooth functionality, great attention to detail, and excellent communication throughout the...
Up to $50
Price
1 day
Duration
Helpful?
Reviews
6 reviews for this Gig
| (6) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
C catileogmbh
Repeat Client
Germany
I hired Mohammad to develop also phase 2 of my application, and he exceeded my expectations once again. I would hire him again anytime.
$400-$600
Price
2 weeks
Duration
Z Seller's Response
Helpful?C catileogmbh
Repeat Client
Germany
The Mohammad clearly exceeded my expectations in every aspect of this project. Communication was always clear and proactive, and the technical execution was very solid. What really stood out was the strong commitment to the project and the willingness to think along with me beyond the initial scope...
$1,000-$1,500
Price
4 weeks
Duration
Z Seller's Response
Helpful?Z zarkeem_vollor
Repeat Client
United Kingdom
Exceptional work as always! Zain delivered a highly professional and perfectly functional Excel Add-in that exceeded my expectations. His attention to detail, clear communication, and strong understanding of Microsoft Office integration made the whole process smooth and efficient. The Add-in works flawlessly...
Up to $50
Price
2 days
Duration
Z Seller's Response
Helpful?Z zarkeem_vollor
Repeat Client
United Kingdom
Zain is an exceptional developer! He built a custom Outlook Add-in for me that works flawlessly and integrates perfectly with my workflow. His understanding of Office Add-ins, React, and the Microsoft ecosystem is outstanding. Communication was smooth, delivery was on time, and he went above and beyond...
Up to $50
Price
2 days
Duration
Helpful?H holofira122
United States
I had an amazing experience working with Zain. He built a professional and modern Office Add-in for me with advanced features and a clean, user-friendly interface. Everything was delivered exactly as promised, smooth functionality, great attention to detail, and excellent communication throughout the...
Up to $50
Price
1 day
Duration
Helpful?
