Systems Administrator II Domain Administrator with Security Clearance

Systems Administrator II Domain Administrator Who is Epsilon: Epsilon is an IT Services company that was founded in 2009 and has become an established leader in providing Information Technology services to both Federal Government and Commercial businesses across the United States. Epsilon is known for its solution-focused and innovative approach, aligning technology systems, tools, and processes with the missions and objectives of its customers. Epsilon's headquarters are in Weaverville, NC with other corporate offices in Greenville, SC, Crystal City, VA, and Denver, CO. We have employees in 30+ States across the U.S. Why work for Epsilon: In joining Epsilon's team, you will have the opportunity to contribute to Epsilon's business and customer initiatives, as well as influence our brand culture through people interaction and technology advancements. Epsilon invests in our employees by promoting from within and enabling employees to elevate their knowledge and skill set in their profession by allocating $3,000 annually in Professional Development funds. We also offer competitive pay, comprehensive benefits through one of the largest national carriers, Paid Time Off (PTO) that increases with tenure and has a generous rollover, 11 company paid Holidays, and 401(k) with immediate contribution. Where you'll work: You will work onsite in Crystal City, VA initially and then transition to onsite in Manassas, VA within the first year. Our Customer's Mission: Team Epsilon has been chosen to deliver full-spectrum IT and Cyber Security support to a critical and enduring multinational organization within the United States Department of Defense. This DoD organization manages the resourcing, development and sustainment of one of our nation's most coveted and capable platforms. Our role in this mission involves managing classified environments, supporting international partners and foreign military sales (FMS) clients, providing top-tier desk-side support, and offering adaptable enterprise infrastructure solutions. Our services, ranging from systems administration and network engineering to Information security and data center management, are essential to the mission's success, so we're looking for team members who are committed to delivering excellence without compromise and who view customer service as a top priority. An average day: As Systems Administrator II Domain Administrator, you will be responsible for supporting the administration and maintenance of Active Directory domain infrastructures, including domestic and international domain environments, for a large federal enterprise effort. This role involves managing domain controllers, implementing domain security policies, and ensuring domain service performance. The Domain Administrator will collaborate with senior administrators and other IT teams to support mission-critical domain services and contribute to domain infrastructure improvements. In this position you will: Configure, deploy, and maintain Active Directory domain infrastructure, including domain controllers and related services Manage domain user accounts, group policies, OU structures, and security permissions across the enterprise Implement domain security measures, including password policies, account lockout policies, and privileged access management Monitor and maintain domain replication, ensuring proper synchronization across distributed domain controllers Configure and manage DNS/DHCP services to support reliable domain name resolution and IP address assignment Implement and maintain domain certificate services and PKI infrastructure Assist with domain migrations, consolidations, and forest/domain trust relationships Troubleshoot and resolve domain authentication issues, service disruptions, and performance problems Maintain domain documentation, including domain architecture diagrams, recovery procedures, and operational guidelines Collaborate with security teams to implement domain-level security controls and respond to security incidents Perform regular domain health checks, backup validation, and disaster recovery testing Support integration between Active Directory and other enterprise systems, including cloud services and authentication mechanisms Provide escalation support and technical guidance for domain-related issues to IT support teams Create and maintain domain monitoring dashboards and generate regular health reports for stakeholders Work with virtualization technologies, such as VMware and Hyper-V, to support virtual environments Implement basic security measures, including system hardening and routine patching Assist with managing storage solutions (SAN, NAS) and backup/recovery operations Basic Qualifications: As a requirement of this position, all candidates must be a U.S. Citizen. In accordance with 8 U.S.C. 1324b(a)(2)(C), Epsilon will not consider candidates for this position who do not meet these conditions. Bachelor's degree in Cybersecurity, Computer Science, Information Technology, or related field, OR, 5 years of related experience in place of degree. 3+ years of Active Directory administration experience and 2+ years hands-on domain infrastructure management experience Must hold a current 8570/8140 IAT Level II Certification (CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP), Security + CE is preferred At least one advanced certification (CASP+, CISSP, GSEC, or Microsoft Certified: Azure Administrator Associate) is desired Proven experience with Active Directory core components including domain controller administration, group policy management, and identity management methodologies Strong knowledge of TCP/IP networking, Windows/Linux administration, system hardening, and network security concepts Proficiency in domain security analysis, compliance implementation, authentication protocols, and access control management Experience with domain monitoring, performance tuning, troubleshooting, and service availability management Strong analytical and problem-solving skills, with ability to communicate effectively and coordinate with teams Experience with POA&M development, CMMC framework, and continuous monitoring practices Other Requirements: Must have an active Secret clearance with the ability to obtain a Top Secret with SCI eligibility or have an active Top Secret with SCI eligibility. Will be subject to a federal background investigation. Physical Demands and Working Conditions: Listed below are the physical or mental requirements necessary for the job's performance. Reasonable accommodation may be made to enable individuals with disabilities to perform essential job functions: Prolonged periods of computer desk work. Dexterity of hands and fingers to operate a computer keyboard and other computer components. Speaking and hearing are sufficient to converse and understand conversations, both in-person, telephone, and virtual meetings. The cognitive skills needed to complete tasks, including abilities such as learning, remembering, focusing, categorizing, and integrating information for decision-making, problem-solving, and comprehending. Ability to learn new tasks, remember processes, maintain focus, complete tasks independently, make timely decisions in the context of a workflow, and the ability to communicate with managers and co-workers. Mental aptitude to respond appropriately in high-pressure situations or deadline-driven environments. Maintain a professional emotional response when working with others. Connect directly with your dedicated recruiter, Jeannine, on Epsilon's careers page. Epsilon is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applications will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. EEO/AA: Disabled/Vets. Please click here to review your rights under EEO policy. If you are an individual with a disability and need special assistance or reasonable accommodation in applying for employment with Epsilon, Inc., please contact our Recruiting department by phone or by email .