On-Site Software Engineer Intern — Summer 2027

CACI International Inc.; Lisle (IL); On-site; USD 44,000 - 88,000; Part time

Job summary

CACI International Inc. in Lisle, IL is seeking a Software Engineering Intern for Summer 2027. Work 100% on-site for 10–12 weeks, collaborating with engineers and other interns to develop software and advance telecommunications projects.

You will prototype software, optimize algorithms, and contribute to research papers under close mentor guidance, while gaining real-world experience in a fast-paced environment.

Qualifications

• Pursuing an undergraduate or graduate degree in CS/CE/EE or related field.
• Must be legally authorized to work in the United States without sponsorship now or in the future.
• Broad CS/CE knowledge with interest in algorithms and data structures; exposure to networking/security is a plus.
• Experience with C/C++, Python, Git, and Linux is preferred.

Responsibilities

• Develop software under direct supervision and guidance.
• Perform algorithm development and optimization tasks.
• Contribute to research papers and document findings.

Skills

C/C++ programming

Python scripting

Algorithms & data structures

Git

Education

Undergraduate or graduate degree in Computer Science, Computer Engineering, Electrical Engineering or related field

Tools

Git

GNU/Linux

Job description

CACI International Inc. in Lisle, IL is seeking a Software Engineering Intern for Summer 2027. Work 100% on-site for 10–12 weeks, collaborating with engineers and other interns to develop software and advance telecommunications projects.

You will prototype software, optimize algorithms, and contribute to research papers under close mentor guidance, while gaining real-world experience in a fast-paced environment.