Information System Security Officer (ISSO)

Skills

Job Specifications

We are supporting a large, well-established consulting engagement on a federal program and are actively hiring 2 Information System Security Officers (ISSO) for a 12-month W2 contract in Washington, DC (Hybrid: 3 days onsite / 2 remote).

This opportunity is ideal for ISSO professionals with hands-on RMF and ATO lifecycle ownership who thrive in regulated federal environments.

Contract Details

Duration: 12 months
Employment Type: W2 Only
US Citizenship: Required

Key Responsibilities

Maintain and support active Authorizations to Operate (ATO)
Perform continuous monitoring, system self-assessments, and control validations
Review vulnerability scan reports, compliance findings, and system logs
Manage and update POA&Ms, driving remediation through closure
Conduct Security Impact Analyses (SIA) for system changes
Partner with technical and business stakeholders to resolve security gaps
Support audits, inspections, and risk assessments with required documentation

Required Experience

Strong hands-on experience with NIST Risk Management Framework (RMF)
Proven experience developing and maintaining:
System Security Plans (SSP)
POA&Ms
ATO packages
Vulnerability reports
Configuration Management & Supply Chain Risk Management Plans
Interconnection Security Agreements (ISA), MOUs, and IDEAs
Background in federal or highly regulated environments
Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, or related field

Why This Role

High-impact federal cybersecurity work
Long-term contract stability
Hybrid flexibility in the DC area

About the Company

Welcome to Mastech Digital, a leading digital-first company that empowers global corporations through innovative digital transformation services. We specialize in analytics and AI-driven data modernization solutions and integrate them with our global expertise to source any digital and engineering technology skill set worldwide. Through a combination of people, processes, and technology, we help clients derive greater value from their digital transformation services programs. We help organizations across various industries... Know more

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