Career Opportunities with Epsilon Systems Inc

A great place to work.

Careers At Epsilon Systems Inc
Share with friends or Subscribe!

Current job opportunities are posted here as they become available.

Subscribe to our RSS feeds to receive instant updates as new positions become available.

Senior Information Security Engineer II (CGSWeb)

Department: Epsilon C5I
Location: St. Louis, MO

Epsilon C5I (, focused on software development and systems engineering for intelligence and combat systems, is seeking a full-time, exempt Senior Security Engineer with at least 8 years of experience to work out of St. Louis, MO. The ideal candidate will have sound knowledge of NGA’s information security processes and procedures. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on!

Duties and Responsibilities:

  • Acts as the Information System Security Officer (ISSO) of a U.S. Government system across several domains.
  • Maintains Authority to Operate (ATO), updates XACTA, works with Assured Compliance Assessment Solution (ACAS) team to verify scans are complete, works with Host Based Security System (HBSS) team to verify security software is up to date and functional, submits system change request into serviceplus, and maintains Plan of Action and Milestones (POAM).
  • Employ a functional knowledge of a wide variety of systems and network engineering procedures as they apply to cyber security or infrastructure of network systems and their design development processes.
  • Work with systems leads and systems engineering peers on system designs, requirements development, and process implementation
  • Troubleshoot user issues with regard to the network, servers, and software code.
  • Work with personnel across multiple engineering disciplines and teams.
  • Participate in continual product improvement efforts and work with team members to implement best practices.
  • Work with limited supervision and takes ownership of assigned projects as assigned.
  • Responsible for installing Windows OS and CentOS updates.

Required Qualifications:

  • Bachelor's Degree in an Engineering, Computer Science/Networks, Mathematics, or a related engineering field.
  • At least eight (8+) years of professional experience designing systems or performing network and information technology engineering or evaluation.
  • Current TS/SCI clearance.
  • Security+ or relevant IAM II certification
  • Expertise in ICD 503 process including use of XACTA 360
  • Knowledgeable in Information standards DIACAP, DITSCAP, STIGS.
  • Perform security reviews and recommend security strategies for the Defense Information Security Agency (DISA).
  • Knowledgeable with the System Engineering Design & Development Phases including architecture, requirements, design, integration, testing, delivery, and support.
  • Proficiency with Microsoft Office Suite, especially Excel and PowerPoint.
  • Knowledge of DoD System Architecture and system design documentation.
  • Excellent oral and written communication skills.
  • Effective team player with highly proficient customer service skills.
  • Flexible and able to work in a dynamic, team-oriented environment.
  • Pursuant to the various government contractual requirements, all applicants must be U.S. Citizens.


ADA Notations:

  • Regular communication (hearing/speaking).
  • Noise conditions range from very quiet to very noisy.
  • Prolonged use of computer (typing/keyboarding).
  • Frequently required to sit for long periods of time, stand, and walk.
  • Ability to travel by car, air or other means of transportation, if required.


Epsilon Systems Solutions, Inc. and its subsidiaries are proud to be Equal Employment Opportunity and Affirmative Action employers, Minority/Female/Disabled/Veterans.

Applicant Tracking System Powered by ClearCompany HRM Applicant Tracking System