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Messaging Systems Engineer

Debevoise & Plimpton

About this role

Job title: Messaging Systems Engineer

RESPONSIBILITIES

  • Design, implement, migrate, and support Microsoft on premises Exchange, as well as Exchange Online
  • Architect, implement, and maintain global messaging infrastructure which includes but not limited to; Exchange, MDM, Active Directory, DHCP, DNS, and security.
  • Maintain Microsoft Windows Active Directory/Entra by performing role based access control, monitoring, security, backups, scripting, and disaster recovery.
  • Troubleshoot and resolve all messaging and Active Directory related issues.
  • Manage messaging related security, such as but not limited to; third party mail gateways, anti-virus, anti-spam and TLS technologies.
  • Proactive monitoring of the messaging environment and recommend changes as necessary.
  • Provide documentation and training to peers as well as other engineers in the Information Services Department.
  • Create technical proposals for business reviews and documentation for training.
  • Design, implement, and support mobile devices management, such as Mobile Iron, AirWatch, and Intune MDM.
  • Execute projects both individually and on a team basis for large initiatives.
  • Other duties as deemed appropriate by the Manager of Messaging Engineering.

REQUIREMENTS, SKILLS AND RELATED COMPETENCIES:

  • Minimum of six years of experience in Microsoft Exchange and Active Directory.
  • Expert in Exchange Online administration.
  • Expert in Entra administration, including:
  • User and Group Management: Creating, updating, and removing users, managing password resets, and managing group memberships (including dynamic groups) for resource access.
  • Conditional Access (CA) Policies: Creating and managing rules that enforce security requirements (like Multi-Factor Authentication) based on user, location, device state, or risk.
  • Guest Identity Lifecycle (External ID): Managing external collaboration settings, reviewing guest user access, and ensuring secure invitation policies.
  • Privileged Identity Management (PIM): Implementing just-in-time (JIT) access for administrative roles to minimize the risk of over-privileged accounts.
  • Monitoring and Audit Logs: Reviewing Entra ID sign-in and audit logs to troubleshoot access issues, identify suspicious activity, and ensure compliance.
  • Configuring MFA (Multi-Factor Authentication) for all users, especially administrators
  • Providing secure access to the Microsoft Entra Graph API
  • Excellent troubleshooting skills related to Active Directory and Exchange.
  • Expert working knowledge of DHCP, DNS, and PowerShell.
  • Expert working knowledge of MDM solutions such as Mobile Iron and Intune MDM.
  • Excellent written and oral communication skills, with the ability to communicate with technical and non-technical staff at all levels.
  • Highly proficient in Microsoft Office including Visio.
  • Must be willing to learn and adapt to technologies outside of current skill set.
  • Must be available to provide after-hours support and project deliverables.

PREFERRED QUALIFICATIONS:

  • Experience with large law firms preferred.
  • Bachelors Degree in Information Technology or Engineering preferred.
  • Current Exchange and Active Directory certifications.
  • Understanding of large global user environments
  • Knowledge and familiarity with load balancers, VMware, compute, and storage.

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