Sr. System Administrator - VMWare Horizon

Job Description

Senior Systems Administrator - VDI specific

Location: Houston, TX - onsite 3 days a week

Direct Hire - MUST BE AUTHORIZED TO WORK IN THE UNITED STATES NOW AND IN THE FUTURE WITHOUT ASSISTANCE

Target Pay: $120-140K depending on experience

I'm working with a client seeking a Senior Systems Administrator to lead the management and optimization of their VMware Horizon-based Virtual Desktop Infrastructure (VDI). This is a highly impactful role focused on maintaining system performance, implementing upgrades, and resolving escalated technical issues across a complex enterprise environment.

Key Responsibilities:

Oversee the administration, support, and troubleshooting of VMware Horizon, including Instant Clones, UEM/DEM, and App Volumes.

Install, configure, and upgrade Windows Server environments (2016+), Active Directory, and associated services.

Support VDI performance tuning, monitoring, and issue resolution, including after-hours support as needed.

Collaborate with IT leadership on planning and implementation of new infrastructure projects.

Supervise and mentor junior system administrators and coordinate with 3rd-party support vendors.

Ensure system documentation, security, and compliance with organizational standards.

Participate in change control, disaster recovery planning, and end-user rollout initiatives.Requirements:

10+ years of enterprise IT administration experience.

3+ years of hands-on experience with VMware Horizon, vSphere, vCenter, Workspace ONE, and Identity Manager.

Strong understanding of Windows Server, Active Directory, Group Policy, and networking protocols (TCP/IP, DNS, SMB, iSCSI, etc.).

Experience with backup solutions, monitoring tools, and system configuration management.

VMware certifications preferred.

Bachelor's degree in a relevant field required.

Addison Group is an Equal Opportunity Employer. Addison Group provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, gender, sexual orientation, national origin, age, disability, genetic information, marital status, amnesty, or status as a covered veteran in accordance with applicable federal, state and local laws. Addison Group complies with applicable state and local laws governing non-discrimination in employment in every location in which the company has facilities. Reasonable accommodation is available for qualified individuals with disabilities, upon request.

Full-time