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Software Engineering Intern - Summer 2026

CACI International • Lisle, IL • 1d ago

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: Up to 10%

Type of Travel: Local

The Opportunity:

At CACI, we are proud of our innovative workforce and the technology we deliver to our enterprise and mission customers. Want to work for a company that is recognized as a top workplace across the country? We're searching for Software Engineering Interns to join our team in Lisle, IL for Summer 2026! The internship will begin in May and last 10-12 weeks. You will be expected to work 100% on-site.

Responsibilities:

Under direct supervision and guidance, work closely with other interns, as well as seasoned engineers, on projects that expose them to leading edge telecommunications technology. You will perform work under close mentor guidance including but not limited to:

Development of software

Algorithm development and optimization

Research paper writing

Qualifications:

Required:

Currently pursuing an undergraduate or graduate degree in Computer Science, Computer Engineering, Electrical Engineering or related field

Must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future

Must be able to obtain and maintain applicable security clearance

Broad computer science/computer engineering background including broad knowledge of algorithm and data structure implementation

Experience and interest in some of the following technology areas desired: Networking, Security, Vulnerability research; etc.

Knowledge of Microsoft software applications and other software applications as required

Experience with high-level programming languages such as C/C++ Experience with scripting languages such as Python

Experience with source code management tools such as Git

Experience with GNU/Linux software development and toolchains

Interest in algorithms, data structures, and computational complexity

Desired:

Minimum GPA of 3.0 or higher is preferred, notrequired

Previous internship/co-op or other work experience, leadership and teamwork capabilities, interpersonal communication skills, and activities(professional/community/extracurricular)

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.

Learn more about CACI here. (https://careers.caci.com/global/en/life-at-caci)

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. Learn more here (https://careers.caci.com/global/en/employee-benefits) .

The proposed salary range for this position is:

$43,900 - 87,900 USD

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.

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