System Administrator (Levels 1-3) with Security Clearance

If interested, please send resume to Andie at . Must sit onsite in Oklahoma City or St. Louis CompTIA Security+ CE certification required prior to start
Candidates must be able to obtain and/or maintain a Department of Defense ­­Secret clearance as a condition and continuation of employment. Desired Qualifications & Experience
· 3+ years of experience providing end-to-end hardware and software support for desktop systems, servers, applications, networks, and infrastructure in DoD or secure environments.
· Strong experience supporting Microsoft Windows desktop and server operating systems, including installation, configuration, maintenance, upgrades, patching, and troubleshooting.
· Experience supporting Linux/Unix environments, application/development/production servers, High Performance Computing (HPC) systems, and virtualization technologies (VMware/ESX preferred).
· Working knowledge of Active Directory, Group Policy (GPO), networking fundamentals, asset management, configuration/change/release management, and problem resolution.
· Experience providing technical support in Closed Areas, including workstation, laptop, peripheral, and dedicated network infrastructure support.
· Perform Install, Move, Add, Change, and Dispose (IMACD) activities, software deployments, system upgrades, and hardware lifecycle management.
· Ability to troubleshoot complex hardware, software, system, and network issues while managing escalations through resolution.
· Strong customer service and communication skills with the ability to build relationships, work across technical teams, and operate effectively in a dynamic environment.
· Experience with Microsoft Office products and technical documentation development/editing.
· Preferred experience with SQL, Exchange, Web servers, WSUS, SAN technologies, NetBackup, and HP hardware. Apex Systems Military & Veteran Programs
At Apex Systems, we are proud to support those who serve. Our commitment to the military community is reflected in our robust veteran hiring initiatives, military-friendly workplace policies, and nationally recognized programs. We value the leadership, discipline, and mission-first mindset that military professionals bring to our team. Join us in continuing your mission.
Why Apex is a Top Choice for Veterans and Military Talent:
Military-Friendly Employer: Recognized as a Military Friendly® Employer for multiple consecutive years.
Transition Programs: DoD Skill Bridge program with multiple pathway options.
Veteran Hiring Commitment: We actively partner with multiple veteran and military organizations that specialize in IT upskilling and certification training, helping service members and veterans transition into high-demand tech careers
Apex Military Network: Internal employee resource group supporting veterans, Guard/Reserve members, and their families. Apex 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. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide. EEO 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 or 844-463-6178. Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.