Mechanical Systems Engineer

Job Title: Mechanical 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: Continental US

Anticipated Posting End: 7/31/2026

The Opportunity:
CACI is seeking a senior systems engineer with background in Mechanical engineering. Join our team to create a complex mission critical communications system for our DoD customer. Your focus will be on creating large aperture antenna systems and the required mission processing through development, test, and deployment phases. You will work in a cross-functional team, and be expected to work independently with limited supervision.
Responsibilities:

• Create and maintain detailed system diagrams, wiring diagrams, CAD designs, BOMs, etc. for large aperture antenna systems

• Develop and present design reviews to customers, ensuring clear communication of technical concepts

• Represent the program by leading customer presentations, demonstrating project progress and system capabilities

• Participate in on-site system installation, provide technical expertise during deployment

• Conduct thorough factory and site acceptance testing to ensure system quality and performance

• Prepare and complete Contract Data Requirements Lists (CDRLs) to meet program documentation requirements

Qualifications:

Required:

• Bachelor's degree in Electrical, Computer, Aerospace, or Mechanical Engineering or similar field from an ABET accredited university

• 5+ years of experience in systems engineering or related field

• Proven experience in creating and managing end-to-end system design; system diagrams, wiring diagrams, power budgets, mechanical designs, and managing BOMs

• Experience with factory and site acceptance testing procedures

• Excellent project management skills, including experience with end-to-end material management

• Ability to obtain and maintain a TS/SCI security clearance

• Familiarity with CAD software

Desired:

• Master's degree in a relevant engineering field

• 5+ years of experience in systems engineering for large aperture antenna systems or related defense projects

• Demonstrated ability in creating and presenting design reviews to government customers

• Hands-on experience with global deployment of large-scale antenna systems

• Familiarity with Contract Data Requirements Lists (CDRLs) and government contracting processes

• Familiarity with relevant applications: Microsoft Office, Microsoft Project, Microsoft Visio, Systems Tool Kit (STK), Solidworks, Python/MATLAB

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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:

$82,100-$172,400

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.