APIs, Integration & Microservices

Most enterprise software is really integration work: getting systems that were never designed together to exchange data safely. I design API-first architectures and the integration patterns around them — REST, event-driven and webhook — and I have led government-to-government (G2G) integrations where inter-agency contracts, secure data exchange and compliance all had to line up.

I also build the integrations themselves: Microsoft 365 through MS Graph (Teams, Planner, To Do), Exchange and Outlook through EWS, Active Directory / LDAP, SMTP and push-notification services.

What I deliver

  • API-first design

    Module boundaries, API contracts and data-ownership decisions that let several teams build in parallel.

  • G2G and cross-entity integration

    Inter-agency API contracts, secure data-exchange protocols and compliance requirements across Sharjah government entities.

  • Reusable integration patterns

    REST, event-driven and webhook patterns packaged as platform components adopted organisation-wide, so new projects onboard faster.

  • Microsoft ecosystem integrations

    MS Graph with least-privilege access, Exchange calendar sync through EWS subscription events (via a Windows Service), Outlook task-pane add-ins and Active Directory / LDAP lookups.

  • Performance and resilience

    Redis distributed caching for session management and scale; SignalR for real-time updates.

Selected work

  • OnePortal — unified digital workplace

    MS Graph integrations for Teams, Planner and To Do with least-privilege API access, plus a service catalogue and workflow automation.

  • Meeting Rooms Booking System

    A custom Outlook add-in with real-time free/busy validation against Exchange resource mailboxes, and a Windows Service that syncs calendar events via EWS.

  • Vision eForm — visa processing platform

    Redis distributed cache for session management, multi-channel payments and automated visa generation through a Windows Service.

Technologies

  • REST
  • Microservices
  • MS Graph API
  • Exchange / EWS
  • Active Directory / LDAP
  • SignalR
  • Redis
  • Webhooks
  • .NET

Case studies