Senior Infrastructure Engineer (Exchange & Windows)

About the role

Beyondsoft, a mid-sized business IT and consulting company with offices across four continents, is looking for an experienced Senior Infrastructure Engineer (Exchange & Windows) to join its team in Taiwan. The role covers designing, deploying, maintaining and supporting highly available messaging and collaboration environments, managing Exchange hybrid configurations, troubleshooting mail flow and infrastructure issues, and implementing security and compliance solutions.

Key responsibilities

• Manage and maintain Microsoft Exchange, including hybrid configurations with Office 365
• Design, implement and support enterprise messaging platforms and collaboration tools such as Exchange and Microsoft Teams
• Administer Active Directory, ADFS and Azure AD, keeping synchronization and identity federation running
• Monitor messaging infrastructure for performance, availability and reliability
• Troubleshoot mail flow, client access and calendar issues and perform root cause analysis
• Implement email security protocols (SPF, DKIM, DMARC) and manage EOP and Defender for Office 365
• Work with security and compliance teams on regulatory and data protection policies
• Automate tasks and workflows with PowerShell scripting
• Maintain system documentation, diagrams and procedures

Required profile

• Bachelor's degree in Information Technology, Computer Science or a related field
• 10+ years of hands-on experience managing Microsoft Exchange and Windows Server environments
• Proven experience with Exchange 2016/2019, Exchange Online, Office 365 and hybrid deployments
• Experience in large-scale enterprise or global environments

Required skills

• Active Directory, ADFS, DNS, DHCP and related infrastructure services
• PowerShell scripting for administration and automation
• Email archiving, retention and compliance policies
• Familiarity with Microsoft Defender for Office 365, spam filtering and anti-malware solutions
• Mail protocols: SMTP, MAPI, POP, IMAP, Autodiscover
• Nice to have: Microsoft Teams, SharePoint Online, Azure AD Connect, Intune, ticketing and monitoring tools (ServiceNow, SCOM)