S4 Inc.
  • Colorado Springs, CO, USA
  • Commensurate with experience
  • Full Time
  • Secret

Comprehensive benefits package with 401k

Job Title: IT System Security Engineer (HBSS/ACAS)

Status: Looking for qualified candidates to fill our open position

Work Location: Colorado Springs, CO

Clearance: Active current Secret

Please note that you must be a US citizen to apply to this position

Education: BA/BS or AA with 4 years of IT Security experience

Certification: Current Security+ CE and current Server+ or Windows 10 and higher are both required

Schedule: Monday-Friday days and 24/7 coverage during exercises and contingency operations

Travel: Occasional

Salary: Commensurate with experience

Job Listing Number:

LCAT: IT System Security


Overview: The ideal candidate will have a minimum of four (4) years' experience in relevant Information Assurance and complete knowledge of Assessment and Authorization package creation, security control assessment, and IT security POA&M creation. The candidate shall possess a thorough understanding of cybersecurity and tasks required to protect and defend information and information systems by ensuring their availability, integrity, authentication, confidentiality, and non-repudiation. This includes providing for restoration of information systems by incorporating protection, detection, and reaction capabilities.


Job Duties:

  • Review system hardware/software design and architecture documentation and prepare materials addressing security technical issues.
  • Support RMF integrated product integrity analysis, development of security test plans, procedures, test reports, and security assessments
  • Provide cyber security subject matter expertise for the deployed instances of an accredited system as tasked and assist in the identification and assessment of site-specific technical requirements.
  • Provide technical support for IA Vulnerability Management (IAVM) compliance, analysis, and tracking for the accredited baseline
  • Create, update, and maintain a POA&M for the accredited system.
  • Provide IAVM status input for the systems supported.
  • Utilize eMASS for the documentation of test evidence and risk assessment for each system
  • Review RAW SCAP Scan Results and Checklists
  • Commence final scans for IA hardening
  • Review findings from final scans
  • Be responsible for operating, tuning, and reviewing maintenance of all cyber security tools, software suites, devices, appliances and systems, including, but not limited to:
    • DoD Host Based Security System Suite (HBSS) suite, including the HBSS Enterprise Policy Orchestrator (ePO)
    • The DoD Assured Compliance Assessment Solution (ACAS) suite
    • (ESM), Enterprise Log Manager (ELM),Splunk log receiver, event correlation engine or the equivalent replacements
  • Other duties as assigned




  • Active current clearance (please note that you must be a US citizen to apply to this job listing)
  • Certification Requirement: Security+ CE and Server+ or Windows 10 or higher
  • Education: BA/BS or AA with 4 years of experience
  • Monday-Friday days and 24/7 coverage during exercises and contingency operations

To apply to this position please go to www.s4inc.com and click on Careers to complete and an employment application and to upload your resume.


S4 Inc. offers competitive salaries and a comprehensive benefits package with 401(k), and universal time off.  We are an Equal Opportunity Employerminorities/females/veterans/individuals with disabilities/sexual orientation/gender identity. S4 participates in the E-Verify employment verification program.  If you are looking for a challenging and rewarding position, then we invite you to submit your resume including salary history/requirements.  Candidate selected must be able to obtain and maintain the security clearance required by the contract at all times


If you are an individual with a disability or a disabled veteran, and need a reasonable accommodation to apply to a position, please contact Michelle Sweeney, HR Manager, by phone at (781) 273-1600 or by email at accommodation@s4inc.com.

S4 Inc.
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