Job#: 2082107

Job Description:

Job Title: Systems Administrator

Location: Norco, California (Full time on-site)

Clearance Required: Active DoD Secret (TS/SCI preferred)

Email Julissa Rowell at [email protected] to apply!

Our client is seeking a Systems Administrator to support a DoD client in Norco, California. This role will work under the guidance of the Senior Systems Administrator and collaborate with cybersecurity professionals, program analysts, and fellow system administrators in a dynamic, agile environment. The ideal candidate will bring strong technical expertise in system administration, scripting, and cybersecurity compliance within a DoD or federal IT setting.

• Administer and support daily operations of computer network systems including workstations, file servers, and web servers
• Install and maintain hardware, software, system upgrades, and network security tools (e.g., firewalls, antivirus, IDS)
• Troubleshoot and resolve hardware, software, and network issues across Windows and Linux/Unix platforms
• Develop and maintain scripts or small applications to automate system tasks and support operational needs
• Monitor system performance, availability, and security compliance; implement STIGs and support RMF accreditation
• Collaborate with the ISSO to ensure systems meet cybersecurity and accreditation requirements
• Provide Tier II support for escalated service tickets and participate in incident response and change control processes
• Maintain documentation for system configurations, procedures, and code
• Support integration of new technologies into classified and unclassified environments
• Ensure compliance with Cyber Workforce (CWF) directives and maintain required certifications

• U.S. Citizenship and active DoD Secret clearance (TS/SCI preferred)
• High school diploma or GED with 3+ years of relevant experience, OR a bachelor’s or master’s degree in a related field
• 3–5 years of experience in system administration or software programming in a DoD or federal IT environment
• Proficiency in at least one scripting or programming language (e.g., PowerShell, Bash, Python, JavaScript)
• Experience with Windows and Linux/Unix OS, virtualization platforms (VMware, Hyper-V), and system monitoring tools
• Familiarity with cybersecurity frameworks, STIGs, RMF, and DoD IA policies
• Understanding of version control systems (e.g., Git) and basic SDLC practices
• Strong problem-solving, communication, and documentation skills
• Must meet DoD 8140 Cyber Workforce (CWF) IAT Level II requirements

• Ability to lift 10–25 pounds
• Ability to stand, walk, twist, bend, and squat for extended periods

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 [email protected] 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.

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.