Senior Staff Information Systems Security Engineer (ISSE)

About the role

CACI is hiring a Senior Staff Information Systems Security Engineer (ISSE) in Chantilly, Virginia. The ISSE is the primary technical authority for the security and resilience of mission-critical systems, integrating security engineering into every phase of the Software Development Life Cycle. The role works with software developers, systems engineers and government stakeholders to run the Risk Management Framework (RMF) and keep the Authority to Operate (ATO) for complex cloud and on-premise environments.

Key responsibilities

• Lead the end-to-end RMF process, manage NIST 800-53/171 control sets and coordinate with cybersecurity entities (SCA/DAO) to maintain the ATO.
• Drive "security by design" by reviewing technical change requests, evaluating new technologies and overseeing cloud platforms (AWS/Azure).
• Run system inspections and vulnerability assessments, manage POA&Ms, prioritize patching and support disaster recovery and contingency planning.
• Set up continuous monitoring to track security posture, enforce cybersecurity policies and brief complex technical risks to senior stakeholders.

Required profile

• Bachelor's degree in Computer Science, Information Technology, Cybersecurity, Engineering or a related field.
• At least 10 years of progressive experience in Cybersecurity, Information Assurance or a related background.
• Active TS/SCI clearance with polygraph.
• DoD 8570 IAT Level II compliance (e.g. Security+, CCNA Security, CySA+).

Required skills

• Deep experience with the RMF lifecycle (NIST 800-37) and maintaining ATO.
• Expert knowledge of NIST 800-53 and 800-171 controls, including control inheritance and overlays.
• Ability to write cybersecurity policies, manage POA&Ms and develop contingency/disaster recovery plans.
• Experience reviewing system changes for security impact and collaborating with development teams.
• Functional understanding of security operations in AWS or Azure.
• Desired: experience with GRC tools (Xacta, SNOW) and industry tools (Nessus, Splunk, Anchore).

What we offer

• Proposed pay range of $120,800 - $265,800, depending on location, contract category, experience and skills.
• Healthcare, wellness, financial, retirement, family support, continuing education and time-off benefits.
• Flexible time off and learning resources.