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T.S. Cleared-Information Systems Security Officer; ISSO

Job in Bellevue, Sarpy County, Nebraska, 68123, USA
Listing for: Terrestris Global Solutions
Full Time, Part Time position
Listed on 2026-02-16
Job specializations:
  • IT/Tech
    Cybersecurity, Information Security, IT Consultant
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Position: T.S. Cleared-Information Systems Security Officer (ISSO)

Are you looking for a Challenge? Looking for an innovative organization and the opportunity to learn and grow professionally? We can help! We are seeking a Senior Information Systems Security Officer (ISSO), for the Cybersecurity Support Services for Offutt AFB Defense Red Switch Network (DRSN). This project will provide Cybersecurity Support Services for Offutt AFB’s DRSN and other Nuclear Command, Control, and Communications (NC3) systems in support of the US Air Force’s 55th Strategic Communications Squadron (55 SCS).

This is an on-site position at the Offutt Air Force Base (AFB), Nebraska Monday–Friday (0730–1630).

I’ve never heard of Terrestris. What do you do?

At Terrestris, we leverage technology to create better mission outcomes through better human performance. We form strong client and team relationships through transparency and strive to create an environment where our team can let their excellence shine through. By finding, developing, and incorporating new ideas, we provide memorable services. Rooted in the USMC values of honor, courage, and commitment, Terrestris seeks to deliver extraordinary value to the American people by helping the Government become more efficient and effective.

So, what will the Senior Information Systems Security Officer at Terrestris do?

The Senior Information Systems Security Officer will be a full-time personnel position for the Cybersecurity Support Services for Offutt AFB Defense Red Switch Network contract, providing DRSN cybersecurity support. This position will establish and continuously maintain the Authorization to Operate (ATO) for Offutt DRSN, related subsystems, as well as Offutt DRSN accreditation associated with segments of multiple NC3 systems that connect to Offutt DRSN, such as Presidential and National Voice Conferencing (PNVC), various gateways, and long local communications circuits, in accordance with risk management framework (RMF) guidelines and risk management framework directives (NIST 800-53, Rev 4, Security and Privacy Controls for Federal Information Systems and Organizations, Committee on National Security Systems Instruction No.

1253 (CNSSI 1253, Rev
4), Security Categorization and Control Selection for National Security Systems, DODI 8510.01, Risk Management Framework for DoD Systems, and DISAI 270-50-9, Life Cycle Sustainment Planning).

This position is contingent upon contract award.

What does a typical day look like for a Senior Information Systems Security Officer?

You will:

  • Establish and maintain ATO for Offutt DRSN and interconnected NC3 systems
  • Lead RMF lifecycle using NIST 800-53, CNSSI 1253, DoDI 8510.01
  • Maintain RMF Body of Evidence in XACTA
  • Conduct vulnerability assessments and audit response plans
  • Perform Special Security Representative (SSR) functions
  • Support inspections and external audits

What qualifications do you look for?

You might be the professional we’re looking for if you have:

  • A current Top Secret clearance is required.
  • Authorization to permanently work in the United States without sponsorship.
  • Associate degree (minimum) in IT or Cybersecurity
  • Minimum 4 years RMF / ISSO experience
  • Training Required in accordance with DoD 8140 for this role:
    Bachelors in Computer Science, Cybersecurity, Data Science, Information Systems, Information Technology, Software Engineering,
    OR one of the following certifications: GMON, Security

    X / CASP+, CCISO, CCSP, CGRC/CAP, CISSO, Cloud+, GCSA, GSEC, Security+, SSCP,
    OR one of the following DOD/Military Training: 531-25B40-C46, Information Systems Security Manager (Intermediate) Playlist.

What kind of benefits does Terrestris Offer?

We offer outstanding benefits including health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, and work-life programs. Our award programs acknowledge employees for exceptional performance and superior demonstration of our service standards. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in our benefit programs.

Other offerings may be provided for employees not within this category.

Terrestris is an Equal Opportunity Employer (EOE). Qualified applicants are considered for employment without regard to age, race, color, religion, sex, national origin, sexual orientation, disability, or veteran status. Applicants must be authorized to work in the U.S.

DILBERT © 2018 Scott Adams. Used By permission of ANDREWS MCMEEL SYNDICATION. All rights reserved.

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