Systems Administrator III | ACAS

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 Pt Mugu, CA.

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 III | ACAS, you will be responsible for overseeing the administration and optimization of IT infrastructures across both domestic and international data centers for a large federal enterprise. This position requires advanced knowledge and hands-on experience with server environments, security frameworks, and systems performance. The Systems Administrator III | ACAS will guide system improvements, manage large-scale infrastructure projects, and collaborate across teams to ensure the alignment of security protocols, vulnerability management, and overall system health in highly complex environments. Additionally, in this position you will:

• Facilitate the deployment, configuration, and management of complex operating systems and applications, ensuring performance, security, and availability across the enterprise.

• Provide strategic direction for virtualization technologies (VMware, Hyper-V) and other emerging technologies, enhancing the virtualized environment to meet scalability and performance demands.

• Architect and implement advanced security protocols, including system hardening, advanced patch management, and vulnerability remediation, in line with organizational and federal security standards.

• Take the lead in managing enterprise-level storage solutions (SAN, NAS) and backup/recovery operations, ensuring continuous data integrity and availability.

• Spearhead system upgrades, migrations, and disaster recovery activities, ensuring minimal disruption and maximum resilience.

• Direct the development and management of comprehensive system documentation for configurations, procedures, and standards, ensuring compliance and operational consistency.

• Oversee troubleshooting and resolution of complex system issues, while maintaining operational excellence and rapid incident response times.

• Serve as a subject matter expert and mentor to junior administrators, guiding them through system integration, design, and troubleshooting processes.

• Analyze and provide actionable insights into system performance and capacity, driving continual improvements in system design and infrastructure capabilities.

• Take ownership of the ACAS infrastructure, including Tenable Security Center and Nessus Scanners, ensuring the infrastructure is optimally configured and fully up to date with the latest releases and best practices.

• Design and manage complex vulnerability scanning and compliance audit policies, and direct vulnerability remediation efforts across multiple teams.

• Facilitate vulnerability assessments, risk analysis, and remediation tracking, producing high-level reports and metrics for executive leadership and key stakeholders.

• Direct the integration of ACAS with other enterprise security tools, enhancing threat intelligence, system visibility, and information sharing.

• Own and enhance access control measures across the organization, ensuring compliance with security policies, user role definitions, and activity monitoring standards.

• Guide incident response activities, utilizing advanced vulnerability scanning, forensic data gathering, and impact analysis to ensure swift remediation and lessons learned are integrated into future security strategies.

• Partner with security, network, and application teams to develop and implement strategic improvements across all security and system management platforms.

• Provide strategic guidance on security policy compliance, including NIST, DISA STIGs, RMF, and other DoD security protocols, driving continuous improvement and ensuring adherence to evolving guidelines.

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 the aforementioned conditions.

• Bachelor's degree in Cybersecurity, Computer Science, Information Technology, or related field, plus 5+ years of vulnerability management experience and 2+ years hands-on ACAS/Tenable Security Center experience

• Must hold a current 8570/8140 IAT Level II Certification (CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP)

• Desired Security+ CE certification, plus at least one advanced certification (CASP+, CISSP, GSEC, or Tenable Certified Security Engineer) and current DoD 8570.01-M IAT Level II or higher

• Minimum 3 years of hands-on experience with ACAS/Tenable Security Center, Nessus scanners, and advanced vulnerability management practices.

• In-depth knowledge of DoD security policies, NIST standards, DISA STIGs, and security control implementation in enterprise environments.

• Proven experience designing, implementing, and optimizing enterprise-wide vulnerability management solutions and compliance scanning operations.

• Advanced troubleshooting, system performance tuning, and root cause analysis expertise.

• Expertise in integrating complex security tools and technologies, with a focus on vulnerability management, system health monitoring, and incident response coordination.

• Excellent analytical, problem-solving, and leadership skills, with the ability to effectively communicate technical concepts to both technical and non-technical stakeholders.

• Ability to obtain and maintain security clearance, and experience with POA&M development, CMMC frameworks, 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.

www.epsilon-inc.com/careers

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: Minorities/Females/Disabled/Vets.

Please click here (https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf) 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 828-398-5414 or by email careers@epsilon-inc.com .

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