I will develop a custom office addin for excel word or outlook

S
shahzad_umar_it
S
shahzad_umar_it
Shahzad Umar

Level 2

develop a custom office addin for excel word or outlook
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develop a custom office addin for excel word or outlook

About this gig

Need a custom tool to automate workflows, sync APIs, or boost productivity inside Microsoft 365?

I am an expert developer specializing in modern Office Add-in development using the Office JavaScript API (Office.js), HTML, and CSS, TS , React , tailwind css, Mui , chakra UI , shadcn UI etc.. . I build powerful, secure plugins that work flawlessly across Office on the Web, Windows, and Mac.

Services Offered:

  • Excel Addin: Data automation, custom formulas, bulk charts, and automated dashboards, and integrations
  • Word Addin: Smart templates, content insertion, formatting tools, and AI writing sidebars API integrations.
  • Outlook Plugin: Email parsers, custom task managers, CRM syncing, and template injectors.
  • API Integrations: Seamlessly connect Office apps to REST APIs, databases, Stripe, or OpenAI/ChatGPT.
  • Legacy Upgrades: Migrate slow, insecure VBA macros or VSTO tools to modern web-based plugins.

️ Tech Stack: Office JS, Manifest XML, React, HTML5, CSS3, Node.js.

Why Choose Me?

  • 100% Cross-platform compatibility (Web, Mac, PC).
  • Clean, reliable, and secure source code.

Please message me with your project details before placing an order to discuss the scope!


  • Expertise

    • Algorithms & Data structures
    • Security
    • Design
    • Source control
    • Testing procedures

  • Programming language

    • JavaScript

  • Platform

    • ChatGPT
    • Word
    • Excel

  • Frontend framework

    • AngularJS
    • React.js
    • Semantic-UI
    • Tailwind CSS
    • Vue.js

  • Backend framework

    • Express.js
    • Node.js

Get to know Shahzad Umar

Shahzad Umar

Full stack developer and electron and office 365 and google addins development

4.9(58)

Level 2

  • FromPakistan
  • Member sinceFeb 2025
  • Avg. response time1 hour
  • Last delivery2 weeks

  • Languages

    Arabic, English
As a Senior Software Engineer, I specialize in eliminating manual business workflows through smart automation. I build enterprise-ready Office 365 Add-ins for Outlook, Excel, Word, and PowerPoint, along with Google Workspace Add-ons for Gmail, Sheets, and Docs. I also develop Electron.js desktop apps and AI-powered business solutions. With expertise in Office.js, VSTO, React, TypeScript, Node.js, .NET, Microsoft Graph, OpenAI, and REST APIs, I create secure, scalable systems that reduce repetitive work, improve accuracy, and help teams move faster.

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