Senior ISSO (TS/SCI + Poly) – Onsite in MD, Learning Budget

VulnU; Columbia (MD); On-site; USD 98,000 - 210,000; Full time

Benefits offered by this job

Paid parental leave

23 days PTO

Learning budget

Medical/Dental/Vision coverage

401(k) plan

Tuition reimbursement

Paid Time Off and Holidays

Disability Benefits

Life and AD&D Insurance

Job summary

AT&T Global Public Sector is seeking a Senior Information System Security Officer (ISSO) to support RMF-based accreditation and continuous monitoring for government IT systems. The role emphasizes on-site IA leadership, documentation, and collaboration with engineering and cybersecurity specialists.

The position requires a TS/SCI with Poly clearance, a related bachelor’s degree, and substantial RMF experience. This is a full-time onsite role based in Columbia, MD with comprehensive benefits.

Qualifications

• Bachelor’s degree in related field.
• Experience supporting RMF A&A for IT systems.
• Active TS/SCI with Poly required.

Responsibilities

• Maintain IT Systems Accreditation Documentation (SSP, SCTM, CONOPs, A&A, Test Plans).
• Provide IA security on-site support for IT systems.
• Ensure personnel trained on IA procedures.
• Review hardware/software changes for security operation.
• Advise on IA policy and training.
• Collaborate with engineers and cybersecurity SMEs.

Skills

RMF experience

IA security

Policy development

Stakeholder collaboration

Education

Bachelor’s degree in related field

Tools

Documentation tools

Job description

AT&T Global Public Sector is seeking a Senior Information System Security Officer (ISSO) to support RMF-based accreditation and continuous monitoring for government IT systems. The role emphasizes on-site IA leadership, documentation, and collaboration with engineering and cybersecurity specialists.

The position requires a TS/SCI with Poly clearance, a related bachelor’s degree, and substantial RMF experience. This is a full-time onsite role based in Columbia, MD with comprehensive benefits.