Information Systems Security Engineer, Senior

In a world of possibilities, pursue one with endless opportunities. Imagine Next!

At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of valuing people, embracing agility, and fostering growth, we cultivate an innovative culture that empowers you to achieve your full potential. Unleash your talent and redefine what's possible.

Job Description:

Are you ready to make a real impact in national defense cyberspace operations? We're seeking a skilled cybersecurity professional to join our dynamic team supporting USCYBERCOM's internal command IT systems, integral components of the broader Joint Cyber Warfighting Architecture (JCWA).

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:

• Active TS/SCI w/ Poly required for consideration
• Bachelor's degree and 12+ years of experience or Master's degree and 10+ years of experience; degree should be in Computer Science, Information Assurance, Information Security System Engineering, Cybersecurity, 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. Alternatively; Master's Degree in related discipline and 10+ years of experience.
• Certifications: active DoD 8570 IAM Level III certification, such as: CISSP or CISM.
• Proven understanding and application of RMF processes, including security control assessment, continuous monitoring, and system authorization.
• Used strategies and technologies to safeguard sensitive information from unauthorized access, corruption, loss, or misuse. It ensures the confidentiality, integrity, and availability of data throughout its lifecycle, whether it's stored, transmitted, or processed.
• Lead the design and implementation of advanced security architectures and technologies to protect sensitive data from unauthorized access, compromise, loss, or misuse.
• Championed enterprise-wide initiatives to uphold confidentiality, integrity, and availability (CIA) of information across its entire lifecycle - whether at rest, in transit, or during processing.
• Ensured alignment with regulatory frameworks and industry best practices through continuous risk assessment, threat modeling, and security control optimization.
• Proficient in applying configuration management tools and practices to maintain system integrity, enforce secure baselines, and ensure alignment with federal cybersecurity requirements across all phases of the system lifecycle.
• Proven capability to identify, investigate, and escalate cybersecurity incidents, ensuring timely containment, resolution, and compliance with reporting protocols.
• Skilled in applying structured response methodologies to minimize impact and strengthen organizational resilience.
• Demonstrated expertise in leading the identification, analysis, and escalation of complex cybersecurity incidents, ensuring rapid containment, effective remediation, and adherence to regulatory reporting requirements to reduce operational impact, coordinate cross-functional response efforts, and enhance organizational cyber resilience through post-incident forensics and continuous improvement initiative's.
• Skilled in implementing and managing security technologies, including monitoring tools, endpoint protection, IAM systems, vulnerability scanners, and threat intelligence platforms to enhance cybersecurity resilience.
• Extensive knowledge and practical application of NIST SP 800-37, 800-53, and CNSSI 1253 for system authorization.
• Strong written and verbal communication skills for interfacing with stakeholders at all levels.
• Demonstrated leadership and decision-making capabilities in high-visibility, security-critical environments.
• Proficiency with tools such as eMASS, Xacta, ACAS, SCAP, and Nessus.

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: $144,800.00 - $260,600.00

We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as medical, dental, vision, paid time off, 401(k), life insurance, flexible work schedules, and holidays to fit your busy lifestyle!

Parsons is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status or any other protected status.

We truly invest and care about our employee's wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest-APPLY TODAY!

Parsons is aware of fraudulent recruitment practices. To learn more about recruitment fraud and how to report it, please refer to