Position Description

• Installing, configuring, and maintaining enterprise applications and complex identity services, including multi-forest Active Directory environments, cross-forest trusts, child domains, GPOs, and Entra ID.
• Managing enterprise messaging, edge security, and collaboration platforms, specifically Cisco IronPort (Secure Email Gateway), Exchange Server Subscription Edition (SE) On-Premises, Exchange 365 / Exchange Online hybrid environments, and Microsoft Teams.
• Overseeing inbound and outbound mail flow security, including Cisco IronPort policy controls, content filters, blocklists, and messaging coexistence/synchronization across hybrid cloud and cross-domain boundaries.
• Automating system administration and infrastructure tasks across multiple domains using advanced scripting (e.g., PowerShell, Python) to streamline server deployment, bulk object lifecycle management, and metadata cleanup.
• Overseeing core infrastructure services (DNS, DHCP, PKI) and the lifecycle management of enterprise servers in a distributed network architecture.
• Designing, testing, and maintaining disaster recovery, backup solutions, and high-availability server clusters.
• Monitoring system performance and capacity needs for all supported applications, databases, and core collaboration/gateway infrastructure.
• Coordinating with customers and departmental users across different domains to troubleshoot complex mail flow and cross-boundary issues, providing high-level ticket support, and driving problem resolution.
• Maintaining server and application documentation.
• Collaborating with Cybersecurity, Desktop Endpoint, and compliance teams to ensure appropriate patch management, gateway security baselines, and cross-forest access-control alignment.
• Performing other duties as assigned by the department.

Requirements

• Bachelor’s degree in an IT-related field plus 4 years of progressive enterprise systems administration experience

• High School diploma/GED plus 8 years of progressive enterprise systems administration experience

• Five (5) years of IT work experience supporting servers and software applications and problem solving/troubleshooting.
• Proven advanced experience supporting servers and enterprise applications (including O365, Exchange, and Active Directory) in a large enterprise, advanced experience supporting Microsoft productivity applications.

• Exceptional technical troubleshooting skills.
• Advanced experience supporting PC operating system and hardware.
• Excellent interpersonal and written/oral communication skills.
• The ability to interact with staff at all levels, including VIPs.
• The ability to work independently with a high level of productivity and accuracy.
• Ability to work extended hours occasionally on special projects or emergency activations.
• MUST have exceptional customer service skills.
• Ability to identify and troubleshoot complicated issues.

• Convictions, probation, or deferred adjudication for any Felony, and any Class A Misdemeanor
• Convictions, probation, or deferred adjudication for a Class B Misdemeanor, if within the previous 10 years
• Open arrest for any criminal offense (Felony or Misdemeanor)
• Family Violence conviction

Preferences

• Advanced degree or certifications

• Five (5) years of experience managing Active Directory and DNS systems.
• Knowledge of ITIL, change management, active directory and group policy concepts is a plus.

• Certifications including Azure experience.

General Information

• Mon. - Fri., 40Hrs
• Hybrid Schedule: Minimum 2 Days In-Office (Non- Negotiable)
• May be required to work more than forty hours during the workweek and/or weekends or on-call 24 hours a day to meet special projects or deadlines
• Subject to performing other duties as assigned

• 406 Caroline St., Houston, Tx. 77002
• Must live or plan to live in the Houston Texas metropolitan area

• Depends on Qualifications.
• Based on 26-Pay Periods
• Due to a high volume of applications positions may close prior to the advertised closing date.

• Medical Coverage
• Dental Coverage
• Vision Coverage
• Wellness Plan
• Life Insurance
• Long-Term Disability (LTD) Insurance
• Employee Assistance Program (EAP)
• Healthcare Flexible Spending Account
• Dependent Care Flexible Spending Account

• Ten (10) days of vacation leave per year (accrual rate increases after 5 years of service)
• Eleven (11) County-observed holidays
• One (1) floating holiday per year
• Paid Parental Leave*
• Sick Leave

• 457 Deferred Compensation Plan

• Professional learning & development opportunities
• Retirement pension (TCDRS defined benefit plan)
• Flexible work schedule*
• METRO RideSponsor Program*

• Participation may vary by County department. The employee benefits plans of Harris County are extended to all eligible participants across various departments with the exception of the Harris County Community Supervision and Corrections Department, for which the cited Health & Wellness Benefits are administered through the State of Texas.