• Job Title: Mechanical Engineering Intern
• Summer 2026

Job Category: Intern/Co-op

Time Type: Part time

Minimum Clearance Required to Start: None

Employee Type: Part-Time On-Call

Percentage of Travel Required: None

Type of Travel: None

The Opportunity:CACI is seeking a talented, creative, and highly motivated Mechanical Engineering Intern for Summer 2026 at our Fairfax, VA location! The internship will begin in May, last 12 weeks and will require you to work 100% on-site.

Join our dynamic, collaborative team and contribute to the design and development of advanced antenna and RF systems. Be part of a team that values your input and fosters a learning environment, making a meaningful impact on real-world projects from day one.

Responsibilities:You will work under the leadership of a technical manager that will provide OJT and mentorship. Tasks will include mechanical assembly of parts; creation of assembly, test, and integration documentation; mechanical design of 3D parts; creation of 3D and CNC parts; and other tasks as assigned.

Qualifications:

Required:

• Currently pursuing an undergraduate or graduate degree in Mechanical Engineering or related discipline
• Must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future
• Familiarity with and interest in 3D CAD, FEA and CFD simulation, Fabrication, and 3D printing
• Strong written and verbal communications skills
• Self-motivated, detail-oriented, ability to work independently
• Strong interpersonal, problem solving, and organizational skills

Desired:

• Experience with Solid Works, Solid Works Simulation, or Solid Works Flow Simulation

• Experience with Solid Works PDM

• Minimum GPA of 3.0 or higher is preferred, but not required

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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.

Your potential is limitless. So is ours.

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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:

$45,900 - $91,900

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.