Information Systems Security Engineer (ISSE)

CACI International Inc.; Maryland; On-site; USD 83,000 - 174,000; Full time

Job summary

CACI International Inc. is seeking an Information Systems Security Engineer (ISSE) to support the US Army NG C2 modernization.

You will partner with APMs, PdMs, and engineers to embed security-by-design across modernized tactical software baselines, containerized apps, and secure hybrid cloud/on-prem architectures. You will develop and maintain core cybersecurity documentation (PPP, CSS, SSP) and contribute to architectural design, Zero Trust implementation, and secure CI/CD practices.

Qualifications

• Bachelor’s degree required; 6 years extra DoD cybersecurity experience may substitute for degree.
• 5 years hands-on engineering experience in cybersecurity or secure systems design.
• DoD 8140/8570 IASAE Level II certification (CASP+, CISSP, or CSSLP).

Responsibilities

• Support program cybersecurity strategy with engineers and cybersecurity personnel.
• Develop, review, and maintain PPP, CSS, SSP, and cyber architecture diagrams.
• Design secure, resilient architectures across hybrid cloud and tactical edge environments.
• Integrate Zero Trust, access control, encryption, and fault-tolerance into system designs.
• Promote secure software engineering practices and automate security controls in CI/CD pipelines.
• Coordinate vulnerability management, remediation steps, and residual risk with leadership.
• Support RMF/DoDI 8510.01 and eMASS lifecycle activities.

Skills

Cybersecurity engineering

Secure systems design

RMF knowledge

DevSecOps

Threat modeling

Education

Bachelor’s degree in Cybersecurity/Systems Engineering/Computer Science

Tools

Azure

AWS GovCloud

VMware

Hyper-V

Job description

Job Title: Information Systems Security Engineer (ISSE)Job Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: SecretEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Local* * *The Opportunity:The Information Systems Security Engineer (ISSE) serves as a key technical cybersecurity professional supporting our US Army customer and the Next Generation Command and Control (NGC2) modernization initiatives. In this role, you will partner closely with Assistant Program Managers (APMs), Product Managers (PdMs), and engineering teams to embed security‑by‑design across modernized tactical software baselines, containerized applications, and secure hybrid cloud/on‑prem architectures. The ISSE ensures modernization efforts maintain a robust, resilient, and defensible security posture against evolving tactical threats.Responsibilities:Program Support & CollaborationPartner with APMs, PdMs, lead systems engineers, and cybersecurity personnel to execute the program’s cybersecurity strategy.Provide proactive technical consultation to evaluate proposed designs, architectures, and software configurations early in the lifecycle to minimize security risk.Cybersecurity Documentation & ArtifactsDevelop, review, and maintain core program cybersecurity documentation such as the Program Protection Plan (PPP), Cybersecurity Strategy (CSS), System Security Plans (SSP), and technical cyber architecture diagrams.Modern Architecture & Zero Trust SupportContribute to the design and engineering of secure, resilient architectures across hybrid cloud (IL5/IL6), virtualized, and tactical edge environments.Integrate Zero Trust principles, access control mechanisms, encryption approaches, and fault‑tolerant strategies into system designs.Secure Engineering & AutomationPromote secure software engineering practices to reduce flaws, bugs, and weaknesses.Collaborate with DevSecOps teams to implement automated security controls, container vulnerability scanning, and compliance‑as‑code within CI/CD pipelines.Support automation of Windows and Linux system hardening efforts.Vulnerability Management & Compliance VerificationConduct and analyze ACAS/NESSUS scans, DISA STIG/SRG compliance checks, and static/dynamic source code vulnerability assessments.Assist in developing improved automated vulnerability management and patching processes.Governance & RemediationRepresent Cybersecurity interests on Configuration Control/Review Boards (CCB/CRB).Coordinate with engineering, vendor, and contractor teams to address vulnerabilities, communicate remediation steps, and manage residual risk.Qualifications:Required:Active DoD Secret clearance, with ability to obtain and maintain a Top Secret (TS).Bachelor’s degree in Cybersecurity, Systems Engineering, Computer Science, or related technical field — An additional 6 years of DoD cybersecurity experience may substitute for the degree.5 years of hands‑on engineering experience in cybersecurity, secure systems design, or related role.DoD 8140/8570 IASAE Level II certification (CASP+, CISSP, or CSSLP).Desired:Active DoD TS clearance.Familiarity with Army Systems Acquisition processes, milestone decision points, and associated cybersecurity artifact requirements.Ability to align technical solutions with Army program needs and support program‑level cybersecurity strategy.Agile & DevSecOps Frameworks: Practical experience working within Agile/SAFe development frameworks. Understanding of secure software development lifecycles, CI/CD automated pipeline security, and containerization.Architecture & Engineering: Hands-on experience with secure cloud (Azure and AWS GovCloud Impact Level 5/6 environments), virtualized platforms (VMware, Hyper-V), and on-premise tactical system architectures. Ability to translate complex security controls into technical, implementable requirements.Tactical Domain Expertise: Technical understanding of Army Mission Command (MC) / Command and Control (C2) architectures and tactical network environments. Experience securing systems within Army Warfighting Functions (WfF) and transitioning legacy systems to modernized NGC2 capabilities.Networking & Security Design: Solid understanding of traditional, cloud, and tactical networking concepts (TCP/IP, VLANs, routing, firewalls, VPNs) across the Integrated Tactical Network (ITN). Experience with endpoint detection and response (EDR) tools, automation scripting (Windows/Linux), and Security Orchestration, Automation, and Response (SOAR).Risk Management Framework (RMF): Strong working knowledge of NIST SP 800-53 security controls, DoDI 8510.01 Risk Management Framework (RMF) for DoD Information Technology, and AR 25-2 Army Cybersecurity. Fluent in navigating the DoD Authority to Operate (ATO) lifecycle via eMASS and conducting residual risk assessments.-What You Can Expect: A culture of integrity.At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.An environment of trust.CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.A focus on continuous growth.Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.Pay Range :There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.The proposed salary range for this position is:$82,700 - 173,900 USDCACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.