Information Systems Security Officer

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Job Description:

Parsons is looking for an amazingly talented ISSO to join our team! If you're passionate about cyber defense, thrive in high-stakes environments, and want to work alongside some of the brightest minds in the field—this is your opportunity to step into a pivotal role. Imagine Next with Parsons...

What You'll Be Doing:

• In this role, you’ll be at the forefront of securing mission-critical systems, helping to fortify the cyber infrastructure that underpins joint operations across the Department of Defense.

• Maintain the operational security posture of DoD information systems, ensuring compliance with RMF and related DoD, CNSSI, and NIST directives.

• Lead all phases of the Assessment & Authorization (A&A) process in alignment with DoDI 8510.01 and DoDI 8500.01.

• Serve as the principal advisor to the Information System Owner (ISO) regarding cybersecurity best practices and regulatory obligations.

• Review and validate System Security Plans (SSPs), security controls, and supporting artifacts for completeness and accuracy.

• Recommend and implement technical and procedural safeguards, tailored to mission objectives and emerging threats.

• Conduct system assessments and continuous monitoring activities to maintain the CIA Triad—Confidentiality, Integrity, and Availability.

• Collaborate with ISSMs and DAOs to ensure risk-based decisions support operational readiness and compliance.

What Required Skills You'll Bring:

• Refer to Job Description for Education and Experience Requirements

• In this role, you’ll be at the forefront of securing mission-critical systems, helping to fortify the cyber infrastructure that underpins joint operations across the Department of Defense.

• Maintain the operational security posture of DoD information systems, ensuring compliance with RMF and related DoD, CNSSI, and NIST directives.

• Lead all phases of the Assessment & Authorization (A&A) process in alignment with DoDI 8510.01 and DoDI 8500.01.

• Serve as the principal advisor to the Information System Owner (ISO) regarding cybersecurity best practices and regulatory obligations.

• Review and validate System Security Plans (SSPs), security controls, and supporting artifacts for completeness and accuracy.

• Recommend and implement technical and procedural safeguards, tailored to mission objectives and emerging threats.

• Conduct system assessments and continuous monitoring activities to maintain the CIA Triad—Confidentiality, Integrity, and Availability.

• Collaborate with ISSMs and DAOs to ensure risk-based decisions support operational readiness and compliance.

What Desired Skills You'll Bring:

• Active TS/SCI w/ Poly required for consideration

• Bachelor’s degree and 3+ years of experience or Associates or hs diploma and 7+ years of experience; degree should be in Computer Science, Information Assurance, Information Security System Engineering, or a related technical/business discipline. Experience to include 6+ of direct experience in cybersecurity or information assurance within DoD or Federal IT environments.

• Certifications: active DoD 8570 IAM Level III certification, such as: CASP+ CE, CISSP (or Associate), CISM, GSLC, CCISO

Security Clearance Requirement:

An active Top Secret SCI w/Polygraph security clearance is required for this position.​

This position is part of our Federal Solutions team.

The Federal Solutions segment delivers resources to our US government customers that ensure the success of missions around the globe. Our intelligent employees drive the state of the art as they provide services and solutions in the areas of defense, security, intelligence, infrastructure, and environmental. We promote a culture of excellence and close-knit teams that take pride in delivering, protecting, and sustaining our nation's most critical assets, from Earth to cyberspace. Throughout the company, our people are anticipating what’s next to deliver the solutions our customers need now.

Salary Range: $108,700.00 - $190,200.00

We value our employees and want our empl