Yousuf A.

I have built and published 5 Microsoft apps, 4 on Microsoft AppSource and 1 on the Microsoft Store. I specialize in React based web apps and Office add ins, Outlook add ins, and Microsoft Graph API integrations. I have taken these apps through Microsoft’s Partner Center submission, validation, certification, and approval process. So I understand both sides of the work, building the add in and getting it successfully published. Live on AppSource • SigFlex by Brand My Email: custom-branded email signatures delivered and maintained inside Outlook • Data443 Inbox Protection Manager: real-time email threat scanning, classification reports, event-based activation and one-click actions • Tame Box: AI add-in that labels, summarizes and suggests replies for high-volume support email • Phish Inspector by StrikeReady: Enterprise cybersecurity email reporting and analysis add-in. Live on Microsoft Store • GLworm: Desktop highlight detection and video editing application for automatically finding, clipping, editing, and preparing gameplay moments for sharing. What I build • Outlook add-ins: email signatures, letterheads, compose and read surfaces, event-based activation • Word add-ins: citation management, certificate and document generation, dynamic templates • Office.js, Word and Outlook JavaScript APIs, React, TypeScript, HTML and CSS • Microsoft 365 authentication with MSAL, Entra ID and Azure AD B2C • AppSource submission and Partner Center publishing • Cross-platform support for Windows, Mac and Outlook on the web Also delivered • Word citation add-in with secure login, live citation search, one-click insertion and auto-generated reference lists • Word certificate add-in with dynamic templates, headers and footers, custom fields and automatic certificate IDs Add-ins rarely live alone, so I also handle what sits behind them: Python/FastAPI backends, REST and third-party API integration, AI and GPT features, WebSockets and Redis for real-time, and deployment on Azure with Docker and CI/CD. You don't need a separate backend developer, a separate DevOps person and a separate Microsoft specialist. Typical projects → Build an Outlook or Word add-in from scratch → Fix, extend or modernise an add-in someone else left behind → Get an existing add-in through AppSource validation → Add Microsoft 365 SSO to an add-in that doesn't have it Send me what you're trying to build, or the error you're stuck on, and I'll tell you how I'd approach it before you commit to anything.