System engineer Jobs in Thornton, CO

Job Title: System EngineerJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: TS/SCIEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: LocalAnticipated Posting End: 7/21/2027

The Opportunity:

We are looking for a highly motivated Systems Engineer who thrives on tackling complex challenges, integrating diverse systems, and designing intelligent, software-enabled solutions to enhance mission outcomes. This role calls for someone who combines strategic thinking with tactical execution, able to transform evolving operational requirements into scalable and maintainable technical solutions.

The ideal candidate is adaptable in dynamic mission environments, values collaboration across technical and operational teams, and appreciates how individual contributions impact larger organizational goals. This position supports sensitive national security programs and requires an active Top Secret security clearance. Preference will be given to candidates already holding a CI Polygraph, but those eligible and willing to obtain one are encouraged to apply.

Responsibilities:
The successful candidate excels at solving intricate technical problems with a systems-oriented approach. They understand how various systems, people, and processes work together to drive mission success, and can develop solutions that are both practical and sustainable. Effective communication across engineering, operations, and leadership is key, as is producing technical documentation that supports long-term system sustainment. Identifying opportunities for automation, integration, and continuous improvement is essential, and the ability to remain effective amidst shifting priorities while maintaining focus on strategic goals is highly valued. Professionalism, sound judgment, and a strong commitment to safeguarding sensitive information are fundamental.

Qualifications:

• Active TS/SCI security clearance with CI Polygraph, or willingness and eligibility to obtain a CI Polygraph.
• Bachelor’s degree in a technical field or equivalent experience.
• Ability to work in-person at CACI facilities in Sterling, VA, Sarasota, FL, or Denver, CO.
• At least 3 years of experience in systems engineering, software engineering, systems integration, solution architecture, or related technical fields.
• Minimum of 1 year of experience with mission management applications or enterprise data integration.
• Proven track record of solving complex technical and operational issues.
• Experience integrating software applications, enterprise systems, APIs, databases, and distributed technologies.
• Familiarity with system testing and automated application testing frameworks.
• Strong grasp of systems engineering principles and the system development lifecycle.
• Experience designing or implementing automation for operational efficiency.
• Advanced technical writing skills, including architecture documentation, interface control documents, system diagrams, procedures, and engineering artifacts.
• Excellent communication and collaboration skills with both technical and non-technical stakeholders.
• Ability to adapt quickly to changing priorities while staying aligned with strategic objectives.
• Demonstrated capability to independently prioritize tasks, manage multiple projects, and deliver results in fast-paced environments.
• Experience with Agile methodologies and Atlassian Suite tools, including Jira and Confluence.
• Experience supporting Intelligence Community or Department of War organizations.
• Familiarity with cloud platforms such as AWS.
• Knowledge of PowerShell, JavaScript, Java, or similar programming and scripting languages.
• Experience with REST APIs, microservices, message queues, and distributed system architectures.
• Understanding of Model-Based Systems Engineering, enterprise architecture, or digital engineering practices.
• Experience with AI-enabled decision support, advanced analytics, or data engineering solutions.
• Security+ or other relevant technical certifications.

If you are ready to take on meaningful challenges, collaborate with talented teams, and help drive mission success, we encourage you to apply.

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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.

Since this position can be worked in more than one location, the range shown is the national average for the position.

The proposed salary range for this position is:

$69,100-$141,500