Role overview

Qualifications

5–10+ years of experience in Windows system administration
Strong expertise in Windows Server administration, Active Directory, and Group Policy
PowerShell scripting experience
Hands-on experience with Kubernetes, Red Hat OpenShift, and virtualization platforms (VMware vSphere and/or Hyper-V)

Responsibilities

Administer, maintain, and support Windows Server environments (2016/2019/2022)
Manage Active Directory, Group Policy, DNS, DHCP, and IIS
Design and support virtualized environments (VMware, Hyper-V)
Deploy, manage, and troubleshoot containerized applications using Kubernetes and OpenShift

Key facts

Remote from: Texas (USA)
Full time
Senior (5-10 years)
English

Other skills

Troubleshooting (Problem Solving)
Collaboration
Communication
Mentorship
Problem Solving

About the company

TISTA Science and Technology Corporation

IT Services & IT Consulting

TISTA Science and Technology Corporation, a CMMI Level 3 company, focuses on delivering information technology (IT) and professional services to Federal and State agencies, and to various commercial clients. TISTA is an Inc. 500 company, a recipient of the 2010 “Top 100 Service-Disabled Veteran-Owned Businesses," “Top 100 8(a) Business“ awards from Diversity Business, 2012 “Top 100 Privately-held Businesses in Maryland," and recognized in Washington Technology’s FAST 50 list of the fastest-growing small businesses in government contracting in 2012. We offer expertise in cyber security, software, and database development, engineering support, network, and critical infrastructure protection, IT operations and maintenance, information assurance, identity, and access management, certification & accreditation, enterprise security, disaster recovery planning, continuity of operations (COOP), risk management, IT architecture, IT Security Training Services, and Program Management.

Company details

Company typeLarge

IndustryIT Services & IT Consulting

Company size1001 - 5000

Links

Website LinkedIn See all jobs

Your match analysis

See how your profile stacks up against this role.

We compared the job requirements to your profile to show where you're strong and where you fall short.

Job description

Overview:

TISTA Science and Technology is seeking a Senior Windows System Administrator to join our growing team.

At TISTA, you’ll do meaningful, mission‑driven work that improves lives alongside teammates you trust and leaders who are transparent and supportive. We invest in your learning and internal mobility so you can build a career that keeps advancing. We’re proud to serve and hire Veterans, and we put people first in everything we do.

TISTA associates enjoy above Industry Healthcare Benefits, Remote Working Options, Paid Time Off, Training/Certification opportunities, Healthcare Savings Account & Flexible Savings Account, Paid Life Insurance, Short-term & Long-term Disability, 401K Match, Professional development reimbursement, Employee Assistance Program, Paid Holidays, Military Leave, and much more!

Responsibilities:

Senior Windows System Administrator to design, implement, and support enterprise infrastructure environments. This role requires expertise in Windows Server administration along with hands-on experience in container platforms such as OpenShift and Kubernetes, and virtualization technologies. The ideal candidate will play a key role in maintaining system reliability, performance, and security across hybrid environments.

Administer, maintain, and support Windows Server environments (2016/2019/2022).
Manage Active Directory, Group Policy, DNS, DHCP, and IIS.
Design and support virtualized environments (VMware, Hyper-V).
Deploy, manage, and troubleshoot containerized applications using Kubernetes and OpenShift.
Monitor system performance and ensure high availability and disaster recovery readiness.
Automate system administration tasks using PowerShell and scripting tools.
Collaborate with DevOps and application teams to support CI/CD pipelines.
Implement and enforce security best practices, patch management, and compliance standards.
Troubleshoot complex system, network, and application issues.
Maintain system documentation, procedures, and configurations.
Provide mentorship and guidance to junior administrators.

Qualifications:

5–10+ years of experience in Windows system administration.
Strong expertise in:

Windows Server administration.
Active Directory & Group Policy.
PowerShell scripting.

Hands-on experience with:

Kubernetes
Red Hat OpenShift
Virtualization platforms (VMware vSphere and/or Hyper-V)

Experience with system monitoring tools and backup solutions.
Knowledge of networking fundamentals (TCP/IP, firewalls, load balancing).

Preferred Qualifications

Familiarity with Infrastructure as Code (Terraform, Ansible).
Red Hat or Kubernetes certifications (e.g., CKA, OpenShift Administrator).

Education:

Bachelor’s degree in computer science, electronics engineering or related technical discipline and 5+ years’ work experience.
Eight (8) years of additional relevant experience may be substituted for education (13 years total).

Clearance:

The ability to pass a Tier 2/Moderate Background Investigation.

Location:

Department of Veteran's Affairs (100% On-site)
Monday - Friday (8:00 AM - 4:30 PM CST Time)
Austin Information Technology Center (AITC)

1615 Woodward Street,

Austin, TX 78741