Senior Systems Engineer

CACI International; Virginia (MN); On-site; USD 94,000 - 198,000; Full time

Job summary

CACI International is seeking a Senior Systems Engineer to support the Zero Trust ICAM program for DISA and related clients. You will apply rigorous systems engineering to requirements, architecture, integration, verification, and technical documentation, influencing end-to-end solutions across diverse environments.

You will define operational needs for federated authorization, collaborate with government and industry teams, and produce actionable engineering artifacts.

Qualifications

• TS/SCI clearance with polygraph is required.
• Bachelor’s degree in Systems Engineering, Computer Science, Information Systems, Engineering, or related discipline, or equivalent contract-permitted experience.
• Senior systems engineering experience across requirements, design, integration, test, deployment, and sustainment.
• Experience in requirements elicitation, decomposition, baselining, traceability, interface management, risk management, and verification/validation.
• Ability to write clear technical requirements, architecture/interface documentation, installation/guidance, and verification procedures.
• Experience collaborating with customer integration or deployment teams in regulated or enterprise environments.

Responsibilities

• Develop, analyze, allocate, and maintain functional, interface, security, performance, and operational requirements with end-to-end traceability.
• Apply systems engineering processes to architecture, interface management, trade studies, risk management, configuration control, integration, and verification activities.
• Define use cases, requirements, interfaces, and interactions among PAP, PDP, PIP, PEP, identity providers, attribute sources, relying party services, and federation hubs.
• Address authorization across enterprise, multi-domain, tactical, and disconnected environments.
• Develop architecture descriptions, interface documentation, requirements traceability matrices, verification procedures, release documentation, and customer integration guides.
• Work with DISA and other customer teams to assess environments, identify integration gaps, support deployment planning, and resolve technical issues.
• Draft and review technical standards, conformance criteria, and compliance matrices using clear, measurable, vendor-neutral requirements.
• Lead technical reviews, adjudicate comments, brief stakeholders, and maintain approved engineering and documentation baselines.

Skills

Technical writing

Facilitation

Briefing

Cross-organizational collaboration

Education

Bachelor’s degree in Systems Engineering / CS / Information Systems

Tools

Jira

Confluence

Microsoft Word

Visio

SharePoint

Git

Job description

Job Title: Senior Systems Engineer

Job Category: Engineering

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

* * *

Position Overview:

The Senior Systems Engineer Level 3 will support the Zero Trust Identity, Credential, and Access Management (ZT ICAM) program and related deployments for DISA and other Department of War clients. This role requires applying sound systems engineering practices to requirements, architecture, integration, verification, and technical documentation. Additionally, the engineer will support the ZT ICAM Federated Authorization Service by defining operational needs, interfaces, distributed authorization requirements, and customer integration strategies. Collaboration with government, industry, product, and customer teams is essential to produce clear standards, guides, and engineering artifacts that are implementable, testable, and suitable for diverse environments.

Responsibilities

• Develop, analyze, allocate, and maintain functional, interface, security, performance, and operational requirements with end-to-end traceability.
• Apply systems engineering processes to architecture, interface management, trade studies, risk management, configuration control, integration, and verification activities.
• Define use cases, requirements, interfaces, and interactions among PAP, PDP, PIP, PEP, identity providers, attribute sources, relying party services, and federation hubs.
• Address person entity, non-person entity, resource, application, and service-to-service authorization across enterprise, multi-domain, tactical, and disconnected environments.
• Develop architecture descriptions, interface documentation, requirements traceability matrices, verification procedures, release documentation, and customer integration guides.
• Work with DISA and other Department of War customer teams to assess environments, identify integration gaps, support deployment planning, and resolve technical issues.
• Draft and review technical standards, implementation guidance, conformance criteria, and compliance matrices using clear, measurable, and vendor-neutral requirements.
• Lead technical reviews, adjudicate comments, brief stakeholders, and maintain approved engineering and documentation baselines.

Qualifications

Required:

• TS/SCI clearance with polygraph.
• Bachelor’s degree in Systems Engineering, Computer Science, Information Systems, Engineering, or a related discipline, or equivalent experience as permitted by contract.
• Senior systems engineering experience supporting software-intensive systems through requirements, design, integration, test, deployment, and sustainment.
• Experience with requirements elicitation, decomposition, baselining, traceability, interface management, risk management, and verification and validation.
• Demonstrated ability to write clear technical requirements, architecture and interface documentation, installation/integration guides, and verification procedures.
• Experience working with customer integration or deployment teams in regulated, mission, or enterprise environments.
• Ability to assess designs and implementations, identify gaps and risks, and recommend technically sound courses of action.
• Strong technical writing, facilitation, briefing, and cross-organizational collaboration skills.

Desired:

• Knowledge of Zero Trust, ICAM, Attribute-Based Access Control, and NIST SP 800-162.

• Understanding of federated or distributed authorization, including PAP, PDP, PIP, PEP, policy and attribute exchange, trust, synchronization, and decision portability.

• Experience supporting open architecture, modularity, interoperability, standards development, or conformance assessment across multiple organizations.

• Familiarity with REST APIs, JSON, PKI, mutual TLS, OAuth 2.0, OpenID Connect, SAML, containers, and Kubernetes.

• Experience with Department of War customers, DDIL operations, DevSecOps, software supply chain security, or Section 508 documentation.

• Ability to understand and communicate complex software systems.

• Experience using Jira, Confluence, Microsoft Word, Visio, SharePoint, or Git-based repositories.

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:

$94,400 - $198,200

CACI is anEqualOpportunity 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 otherprotectedcharacteristic.