Information Systems Security Engineer (ISSE)

CACI; Maryland; On-site; USD 110,000 - 170,000; Full time

Job summary

CACI is seeking an ISSE to support US Army modernization, embedding security-by-design across hybrid cloud/on-prem architectures. You will work with program managers and engineers to fortify the system against evolving threats and ensure a robust security posture.

The role emphasizes secure architecture, Zero Trust, and automated security controls within CI/CD, plus collaboration with DevSecOps and vulnerability management teams.

Qualifications

• Bachelor's degree required; 6 years substitutable 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

• Partner with program leads to implement cybersecurity strategy.
• Develop and maintain program cybersecurity documentation (PPP, CSS, SSP).
• Contribute to secure hybrid cloud and on-prem architectures with Zero Trust.
• Promote secure software engineering practices within CI/CD pipelines.
• Coordinate vulnerability management and remediation activities.

Skills

Cybersecurity engineering

Secure systems design

DevSecOps / CI/CD security

Agile / SAFe

Containerization

Education

Bachelor's degree in Cybersecurity, Systems Engineering, Computer Science, or related field

Tools

eMASS

ACAS/NESSUS

SOAR

Job description

Job Title: Information Systems Security Engineer (ISSE)

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: Secret

Employee Type: Regular

Percentage 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 & Collaboration

Partner 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 & Artifacts

Develop, 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 Support

Contribute 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 & Automation

Promote 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 Verification

Conduct 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 & Remediation

Represent 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 pla