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C3EL

Senior Information System Security Officer (ISSO)

C3EL · Washington, D.C.

Posted 19 days ago

or apply directly on C3EL's site. We never take the application ourselves.

Is this posting real?

This role has been open
19 days
C3EL's roles stay open a median of 45 days
Reposted
No
Salary listed
No
0% of C3EL's roles list one
Ghost-job risk at C3EL
high
40 stale, 0 reposted of 54 open
Hiring momentum
61 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-09-17

Measured from postings appearing on and disappearing from C3EL's own greenhouse board since 2026-08-03. Full hiring picture for C3EL.

About this role

The Senior Information System Security Officer (ISSO) will provide on-site cybersecurity and Risk Management Framework (RMF) support in Washington, D.C. This role involves managing cybersecurity documentation, supporting FedRAMP cloud services, and ensuring compliance with federal regulations while also serving as the primary Alternate Lead. The ISSO will track authorization milestones and participate in after-hours incident coverage as needed.

Our read on this posting2.6out of 5
benefits
1/5
freshness
4/5
career value
4/5
role clarity
4/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of C3EL as an employer.

What you need

  • U.S. Citizenship
  • Eligibility to obtain a Tier 4 High-Risk Public Trust
  • Minimum seven (7) years of cybersecurity experience
  • Minimum five (5) years in federal RMF, A&A, ISSO, or authorization work
  • Working knowledge of NIST SP 800-37, 800-53, 800-53B, FIPS 199, FISMA, and applicable CISA/OMB guidance
  • Familiarity with GRC, ITSM, SIEM, scanner, identity, endpoint and cloud-security platforms

Nice to have

  • At least one current cybersecurity certification such as CISSP, CGRC, CISM, CRISC, Security+, SecurityX, CCSP, or GIAC

Worth weighing

  • Position contingent upon contract award
  • Requires after-hours incident coverage
  • Role may involve significant documentation and compliance work
  • U.S. Citizenship is a strict requirement

Summarised from C3EL's posting. Read the full original.

Listed by C3EL on their greenhouse job board, last confirmed open on 2026-09-17. PitchMeAI is not the employer.

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