Office.js Developer

Senior Outlook Add-In Developer (Office.js) | Hybrid | London / Sheffield | 10 Month Contract | £500 - £550 inside IR35

About the Role

We’re looking for a Senior Outlook Add-in Developer to join our team and take ownership of designing, building, and supporting Outlook add-ins used in large, enterprise-scale environments.

This role is ideal for someone who thrives in complex messaging ecosystems and has hands-on experience delivering solutions that work flawlessly across Windows, macOS, web, and mobile Outlook clients, including hybrid Exchange setups spanning on-premises and Microsoft 365.

What You’ll Be Doing

• Architect, develop, and support Outlook add-ins using Office.js and modern web technologies
• Ensure add-ins perform consistently across Outlook for Windows, Mac, Web, and Mobile
• Integrate Outlook add-ins with backend services, APIs, ...