Senior Microsoft 365 & Hybrid Infrastructure Architect

Forn AB is looking for an experienced Senior Microsoft 365 & Hybrid Infrastructure Architect.

The role focuses on Microsoft 365, Exchange Hybrid, identity, enterprise infrastructure, and large-scale migration projects.

You will work across the complete technical lifecycle, from assessment and architecture design to migration planning, implementation, cutover, validation, and operational handover.

Key Responsibilities

• Design Microsoft 365 and hybrid infrastructure solutions

• Develop target architecture and migration architecture

• Design Exchange Hybrid solutions between on-premises Exchange and Exchange Online

• Plan and execute Microsoft 365 tenant-to-tenant migrations

• Design hybrid identity and authentication solutions

• Work with Entra ID, Azure AD Connect / Entra Connect, and ADFS

• Define mail flow, connectors, certificates, Autodiscover, and free/busy configurations

• Plan and support mailbox, PST, and Enterprise Vault migrations

• Design solutions for Microsoft Teams, OneDrive, SharePoint, and Microsoft 365 Groups

• Assess Active Directory, DNS, Group Policy, authentication, and directory dependencies

• Support Active Directory recovery, health checks, and identity troubleshooting

• Define pre-stage, cutover, rollback, and post-migration validation strategies

• Ensure technical readiness and business continuity during infrastructure changes

• Coordinate technical activities between architects, engineering teams, vendors, service desk, and service management

• Participate in CAB and technical governance activities

• Ensure structured transition and handover from project delivery to operations

Technical Skills

We are looking for strong experience in several of the following areas:

• Microsoft 365

• Exchange Online

• Exchange Server 2010 / 2016 / 2019

• Exchange Hybrid

• Active Directory

• Entra ID / Azure AD

• Azure AD Connect / Entra Connect

• ADFS

• DNS

• Group Policy

• Microsoft Teams

• OneDrive

• SharePoint

• Hybrid Identity

• Cross-Tenant Migration

• Enterprise Migration Architecture

Migration and Infrastructure Tools

Experience with the following is advantageous:

• BitTitan MigrationWiz

• BitTitan DeploymentPro

• Quest On-Demand

• Quest NME / CMN

• Quest MMPST