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Information System Security Officer (ISSO)

Caci, LLC - Commercial

MD, US · Posted September 23, 2026

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Caci, LLC - Commercial has filed one layoff notice in the last twelve months, covering 75 workers, most recently June 2026. These are public filings with state labor departments, and an open role can sit alongside them. See the filings

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About the job

Job Title: Information System Security Officer (ISSO)

Job Category: Security

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI with Polygraph

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Local

* * *

The Opportunity:

CACI as a Prime Contractor on MWIII Bridge. All positions in the Hanover, MD area. MWIII Bridge develops and supports Identity, Credential and Access Management (ICAM) capabilities for the enterprise and stand-alone deployment throughout the IC. Tasks include program management, mission support, software integration, software development, system engineering, migration, testing, documentation development, network and system monitoring, configuration control and release management.

Responsibilities:

The candidate will be responsible for security architecture and systems engineering supporting ICAM projects. The ISSO will provide guidance to the team to support system accreditation (IATT and ATO).

ISSO tasks include:

Prepare system security plan (SSP) and provide recommendations to assist in obtaining ATOs.

Identify, develop (either directly, or in coordination with applicable experts), review and incorporate common artifacts found in an RMF accreditation package such as: system architecture and boundaries, hardware and software lists, risk assessment reports, POA&Ms, data flows, and other necessary system, network, and application documentation.

Work with ISSM and DAOs to ensure systems obtain and maintain accreditation.

Verify package submissions have met the threshold for approval such as: C&A Package for System Reauthorization, SAR Findings, CTO’s, POA&Ms, and System Security Plans (SSPs).

Apply continuous monitoring techniques to evaluate the systems security posture.

Create tasking for developers and system administrators as changes and patching are required.

Oversee the implementation of software patches to maintain the security posture of the organization.

Responsible for implementing and enforcing information systems security policies, standards, and methodologies.

Familiarity with the use of vulnerability scanning and assessment tools (e.g., ACAS/Nessus) necessary to identify and document compliance.

Review Audit Logs on a weekly basis.

Perform Data transfers on a weekly basis driving from CACI Hanover Office to Ft. Meade.

Maintain and report assessment and authorization statuses and issues in accordance with organizational guidance.

Understand the PRIVAC process. Support personnel with new PRIVAC requests and extensions.

Qualifications: Required:

TS/SCI clearance with polygraph

This position has been designated as requiring IAM Level 1 CWIP certification and requires one of the following baseline certifications to qualify

CAP, CND, Cloud+, GSLC, Security+CE, HCISPP, CASP+CE, CISM, CISSP (or Associate), CCISO

Bachelor's degree in a technical discipline from an accredited college or university

Ten (10) years relevant work experience. Four (4) years of additional experience may be substituted for a bachelor's degree.

At least four (4) years of this experience must be as an ISSO on programs and contracts of similar scope, type, and complexity.

Desired:

Experience with:

The ICD 503/NIST 800-53 certification and accreditation process

The Risk Management Framework

Developing and maintaining SSPs

IAVA review and handling

Interpreting Security Scan results

Interfacing with System Administrators and Software Engineers

Task tracking systems (e.g. Jira, Redmine, ServiceNow)

​ Understands:

Public Key Infrastructure-based authentication

A variety of security policies, especially within the IC

Fundamentals of technical security risk assessment

Understands how to perform analysis of alternatives

Able to clearly communicate ideas and status updates to management and other stakeholders

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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: $103,800 - $218,100

CACI 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.