L3 Sys Admin - OKC

Apex Systems; Oklahoma City (OK); On-site; USD 52,000 - 61,000; Full time

Benefits offered by this job

ESPP

401K

HSA

EAP

Discount program

Certifications discounts

Training program

Job summary

Apex Systems is seeking a Systems Administrator (Level 3) for 100% on-site work in Oklahoma City, OK. This senior role covers end-to-end support, design, and lifecycle management of enterprise infrastructure, serving as the highest escalation point and SME for complex issues.

The candidate will manage Windows/UNIX/Linux servers, HPC, app servers, desktops, and networks; lead change and release management; and ensure compliance with standards while collaborating with customers and engineers.

Qualifications

• U.S. citizen with ability to obtain/maintain DoD clearance.
• CompTIA Security+ CE certification required prior to start.
• Minimum 5 years of systems administration experience.
• Hands-on Windows Server 2008/2012/2012R2; Windows 7/8 as applicable.
• VMware ESX 5.1+; Active Directory; GPO deployment and troubleshooting.
• HP server hardware experience.

Responsibilities

• Provide end-to-end hardware and software support for Windows and Unix/Linux servers, HPC systems, application servers, desktops, and network systems.
• Lead configuration, change, and release management activities.
• Perform advanced troubleshooting and permanent remediation of complex system issues.
• Manage asset lifecycle including tracking, maintenance, and disposition.
• Maintain compliance with client and customer technical standards.
• Serve as senior escalation point and SME to customers and program leadership.
• Develop program knowledge to effectively represent CNO services.

Skills

Windows Server administration

VMware ESX

Active Directory administration

Group Policy deployment

HP server hardware

Strong communication

Independent worker

Tools

WSUS

NetBackup

HP server management tools

Job description

Systems Administrator (Level 3)

Job ID: 3044848

Location: 100% on-site in Oklahoma City, OK

Schedule/Shift: 9/80 work shift (44 hours Monday-Friday one week, 36 hours Monday-Thursday the following week)

Pay Rate: $38-44/hour (depending upon experience)

Contract Type/Duration: W2 Contract; Long-term Rolling

Position Overview

The Level 3 Systems Administrator is a senior technical role responsible for end‑to‑end support, design, and lifecycle management of enterprise infrastructure. This position serves as the highest escalation point for complex technical issues and plays a critical role in configuration, change, and release management while acting as a technical representative to customers and program leadership.

Key Responsibilities

• Provide end‑to‑end hardware and software support for:
  • Windows and Unix/Linux servers
  • High Performance Computing (HPC) systems
  • Development, production, and application server environments
  • Desktop systems and supporting infrastructure
  • Network systems
• Lead and execute configuration, change, and release management activities
• Perform advanced troubleshooting, root cause analysis, and permanent remediation of complex system issues
• Manage asset lifecycle, including tracking, maintenance, and disposition
• Implement, enforce, and maintain compliance with client and customer technical standards
• Serve as a senior technical escalation point and subject matter expert
• Develop deep program and customer knowledge to effectively represent CNO services
• Build and maintain strong working relationships with customers, engineers, and management
• Produce and maintain technical documentation and operational procedures
• Execute tasks and projects as directed by Management

Requirements

• Candidates must be US Citizens with the ability to obtain and/or maintain a DoD-issued Interim, Secret, or higher Security Clearance as a condition and continuation of employment
• CompTIA Security+ CE certification (required prior to start)
• Minimum of 5 years of relevant systems administration experience
• Extensive hands‑on experience with:
  • Windows Server 2008 and Windows 7 (required)
  • Windows Server 2012 and Windows 8 (preferred)
  • VMware virtualization platforms (ESX 5.1 or higher)
  • Active Directory administration
  • Group Policy Object (GPO) deployment and troubleshooting
  • HP server hardware
• Strong understanding of enterprise server, network, and infrastructure environments
• Excellent written and verbal communication skills
• Ability to work independently in a dynamic, fast‑paced environment

Preferred Qualifications

• Experience administering server roles such as SQL, Web, and Exchange
• Experience with:
  • WSUS
  • SAN technologies
  • NetBackup or enterprise backup solutions
• Experience writing, editing, and maintaining technical documentation
• Prior experience supporting classified or regulated environments

Benefits Overview

Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach.

Equal Opportunity Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at [e-mail] or 844-463-6178.