Systems Administrator II | ACAS - Crystal City, VA

Systems Administrator II | 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 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 | ACAS you will be responsible for supporting the administration and maintenance of IT infrastructures, including domestic and international data centers, for a large federal enterprise effort. This role involves working with server environments, implementing security measures, and ensuring system performance. You will collaborate with senior administrators and other IT teams to support mission-critical systems and contribute to system improvements. Additionally, in this position you will:

Support the deployment, configuration, and maintenance of operating systems and applications.

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.

Participate in system upgrades, migrations, and disaster recovery activities.

Maintain documentation for system configurations, procedures, and standard operating guidelines.

Troubleshoot and resolve routine system issues and respond to service requests.

Collaborate with network, security, and application teams to ensure system compatibility and integration.

Provide input on system design and enhancements, contributing to the improvement of the overall infrastructure

Install, configure, and maintain ACAS infrastructure including Tenable Security Center and Nessus Scanners while ensuring optimal performance and regular updates

Configure and manage vulnerability scanning operations including policies, templates, schedules, and monitoring scan execution for network coverage

Maintain accurate asset inventory, manage asset discovery scans, and track system boundaries while updating criticality ratings

Analyze vulnerability scan results, prioritize findings based on risk, and track remediation progress while generating metrics and trends

Configure compliance audit policies, map vulnerabilities to security controls, and monitor STIG/security checklist implementation

Create and maintain dashboards, generate vulnerability reports, and provide analysis for different stakeholders including trending metrics

Manage integration with other security tools and systems, including Active Directory integration and security information sharing

Implement and maintain access control through user account management, role-based permissions, and activity monitoring

Support incident response through targeted vulnerability scans, forensic data provision, and impact analysis while maintaining system documentation

Basic Qualifications:

As a requirement of this position, all candidates must be a U.S. Citizen. In accordance with , 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 3+ years of vulnerability management experience and 2+ years hands-on ACAS/Tenable Security Center experience

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

Proven experience with ACAS core components including Tenable Security Center administration, Nessus scanner configuration, and vulnerability assessment methodologies

Strong knowledge of TCP/IP networking, Windows/Linux administration, system hardening, and network security concepts

Demonstrated expertise in DoD security policies, RMF, NIST standards, DISA STIGs, and security control implementation

Proficiency in vulnerability analysis, compliance scanning, SCAP implementation, and remediation tracking

Experience with report generation, performance tuning, troubleshooting, and system monitoring

Strong analytical and problem-solving skills, with ability to communicate effectively and coordinate with teams

Ability to obtain/maintain security clearance and 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: Minorities/Females/Disabled/Vets.

Please click  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 (phone number removed) or by email .

 

 

 

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