Active Directory-Administration

System Engineer  Senior

Required SkillsExperience

A minimum of 5 years of relevant experience supporting Microsoft Exchange OnPrem and Exchange Online

5 years of relevant practical experience managingtroubleshooting email Gateway solutions Mimecast preferred

5 years of strong PowerShell automation and advanced active directory experience

Knowledge of Kerberos LDAP Active Directory ADFS DNS DHCP

Very good knowledge of Azure AD Conditional Access MFA O365 licensing etc

Expert knowledge of Windows servers Active Directory ADFS GPOs in a Windows Server 2012 R2 and 2016 environment

Desired SkillsExperience

Ability to effectively plan facilitate and participate in meetings with employees from all organizational levels

Effectively use teamwork to contribute to a high moralehighperformance team culture leading by example

Demonstrate the ability to work in an open way willingness to share knowledge and resources and to educate others within a global team

Effective team player and collaborator

Strong skills in prioritization and reprioritization to react to a dynamic environment as Arch continues to evolve

Excellent interpersonal and communication skills including strong listening skills

Ability to effectively communicate business and technical information to audiences with varying backgrounds

Ability to communicate with offshore teams and technical development teams

Good documentation and presentation skills

Ability to interact with management in a professional manner

Job Responsibilities

Exchange OnPrem and Exchange Online Administration

o Ensure email services are stable secure and available across various Business Units BUs at Arch

o Installing Exchange and setting up Exchange orgs from scratch or upgrading from MS Exchange 2013 to 2016 to 2019

o Support multiple Hybrid Exchange environments syncing to one Multi Geo O365 tenant

o Perform mailbox data migrations during Merger and acquisition or internal transfer of employees

o Develop strategic plans for Mail flow routing Journaling Email retention policies Role based access control etc

o Support merger and acquisitions to lead complex Exchange O365 tenant and AD integrationsmigrations

o Troubleshooting complex Mail flow scenarios to resolve P1P2 tickets across various technologies

o Review and suggest strategic improvements

Active Directory

o Plan and Deploy AD Sites and Services PromoteDemote Domain Controllers

o AD user migration using ADMT and Quest

o Support Multiple AD forests and trust between them

o Automate AD health checks Identity Lifecyle management etc

o Setup configure and administer Quest Change auditor

o Setup and review AD health assessments to remediate any Vulnerabilities

o Setup and support Active Directory Certificate Services

o Troubleshoot AD replication and Entra connect sync issues

O365Entra AD

o Setup and troubleshoot Entra Conditional access policies

o Configure Privileged Identity Manager to administer various AAD Roles

o Create enterprise apps to setup SSO with third party vendors

o Setup Multifactor Authentication

o Assignreassign various O365 licenses and enable relevant services within the O365 licenses

o Create and manage service principals and OAuth app registrations

Email Gateway Mimecast Administration

o Build new Mimecast tenant with standard gateway configuration

o Develop and manage email gateway policies

o Work in coordination with Mimecast and corporate information security to improve security posture

o Document standards and schedule KT sessions with service desk teams

Automation

o Develop PowerShell scripts to help automate routine tasks monitor and generate reports on various workloads EXO Azure AD Teams SPO O365 licensing etc

o Working experience with GitHub and YAML configuration

o Terraform experience a plus

Develop processes and procedures to ensure managed environments maintain the highest levels of availability security and quality

Follow all set procedures to the change management system

Develop capacity forecasts for managed environments and prevent problems prior to outages

Serve as an escalation point and provide guidance and direction for the resolution of escalated issues andor complex production application or system problems

Must be able to accommodate schedule flexibility to deal with escalations and occasional changes during noncore business hours

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