B3 ISSO / Sys Ad

Job#: 3056845 Job Description: Candidates must be U.S. citizens able to obtain and/or maintain a Department of Defense security clearance as a condition and continuation of employment. Information Systems Security Officer / Systems Administrator Location: Baltimore, Maryland (On-site) Secret Clearaed Special Access Program Role Overview We are seeking a versatile technical professional who can administer Windows and Linux systems while also supporting cybersecurity compliance, authorization, and continuous-monitoring requirements for secure information systems. This position involves working within secured environments, utilizing hands-on experience with system administration, Risk Management Framework guidelines, vulnerability management, and security documentation. The selected candidate will collaborate with engineering teams, program leadership, network administrators, and end users to ensure the integrity and compliance of multi-user computing environments. Key Responsibilities Support the implementation and maintenance of cybersecurity requirements under the Risk Management Framework.Ensure information systems are operated, maintained, configured, and disposed of in accordance with approved System Security Plans, internal security policies, and applicable government requirements.Develop, review, and maintain documentation including System Security Plans, hardware and software inventories, configuration-management records, and Plans of Action and Milestones.Perform recurring security audits and reviews of operating systems, user accounts, access controls, audit logs, network configurations, and security-relevant settings.Conduct vulnerability assessments using enterprise scanning platforms and coordinate remediation or mitigation activities.Apply and assess Security Technical Implementation Guides for Windows, Linux, virtualization, network, and supporting infrastructure.Administer Windows Server and Red Hat Enterprise Linux systems, including Windows domain services, Active Directory, Group Policy, LDAP, user accounts, and access-control lists.Perform system patching, operating-system upgrades, software installations, configuration changes, and vulnerability remediation.Configure and maintain VMware environments, virtual machines, and associated infrastructure.Perform security monitoring, log analysis, and component administration using enterprise-monitoring platforms. Required Qualifications Education: Bachelor's degree in Cybersecurity, Computer Science, Information Systems, Information Technology, or a related technical discipline. A combination of additional education and directly related experience will be considered in lieu of a completed degree. Must be willing and able to obtain a DOD secret clearance prior to supporting program work Experience: At least 5 years of relevant experience performing systems administration, cybersecurity compliance, or closely related responsibilities within a secure environment. Experience administering Windows Server operating systems, Windows domain architecture, and Red Hat Enterprise Linux is required. Technical Skills: Proficiency with the Risk Management Framework documentation and security controls. Hands-on experience with operating-system patching, system hardening, account administration, configuration management, and vulnerability remediation. Familiarity with virtualization technologies, Active Directory, Group Policy, and enterprise-monitoring tools. Preferred Qualifications Active DOD Secrete ClearancePrevious experience supporting systems within restricted areas and secure facilities.Experience with vulnerability-scanning technologies and enterprise log-analysis platforms.Experience with network administration and technologies, including switching, routing, subnets, and VLANs.Familiarity with public key infrastructure, encryption technologies, multifactor authentication, and privileged-access management.Experience with PowerShell, Bash, Python, or other scripting languages used to automate administrative or security tasks.Operating-system or infrastructure certifications involving Windows, Linux, VMware, or Cisco. Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth 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 ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy Everforth Apex Benefits Overview: Everforth 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. Everforth 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, Everforth 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. Everforth 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 Everforth Apex team member can provide. Everforth 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. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered. UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems. © 2026 Everforth, Inc. All rights reserved. Everforth Apex Systems is part of the Commercial Segment of Everforth, Inc. NYSE: EFOR 4400 Cox Road Suite 200 Glen Allen, Virginia 23060 Everforth Apex 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. Everforth 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 Benefits Department at [email protected] or 804-523-8228. (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex.