Usman A.

I build production-ready Microsoft 365 Add-ins for Outlook, Excel, Word, and PowerPoint using Office.js, VSTO, SSO, Microsoft Graph API, SharePoint, and AI. I help businesses automate email, document, spreadsheet, and presentation workflows directly inside Microsoft Office with secure authentication, clean UI, backend integration, and deployment support. 🧩 Office Addins Platform Architecture & Development • Office Add-in development using Office.js and VSTO • Cross-platform solutions for Web, Windows, Mac, and Office Online • SharePoint Framework (SPFx) development for custom web parts and extensions • Microsoft Graph API, SharePoint, and OneDrive integrations • Custom Ribbon, Task Pane, and Office UI extensions • Legacy VBA migration to modern Office.js architecture • ChatGPT and Claude-augmented Office Addins for smart email and document workflows 🔐 Authentication, Security & Performance • OAuth2, Auth0, MSAL, Azure AD / Entra ID SSO • Secure enterprise-level API integration for Office ecosystems • Performance optimization for large-scale Office Add-ins • Secure data handling across Microsoft 365 and cloud systems • CRM integrations with Salesforce, HubSpot, and Dynamics 365 🤖 AI, Backend & Full-Stack Support • AI integration using OpenAI and Claude APIs • AI automation for emails, documents, summaries, and data extraction workflows • Backend APIs using Node.js, ASP.NET Core, C#, and Python • Databases: SQL Server and MongoDB • Frontend: React, TypeScript, and Fluent UI • Cloud/DevOps: Azure, AWS, Docker, and CI/CD Why me: ✔ Deep experience with Office.js, VSTO, Graph API, SharePoint, SSO, and AppSource-ready delivery ✔ Strong understanding of Outlook, Excel, Word, and PowerPoint host limitations ✔ Ability to handle full product flow: add-in UI, backend APIs, authentication, deployment, and support ✔ Focus on secure, scalable, long-term Microsoft 365 solutions 📨 Send me a message if you need a reliable Microsoft 365 add-in, Office automation tool, or AI-powered workflow built the right way.