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Cleared Software Engineer Intern – Summer 2026

Denver, Colorado, United States of America
Part Time On-site

Summary

Job Description

Cleared Software Engineer Intern - Summer 2026

Job Category: Intern/Co-op

Time Type: Part time

Minimum Clearance Required to Start: TS/SCI with Polygraph

Employee Type: Part-Time On-Call

Percentage of Travel Required: None

Type of Travel: None

Anticipated Posting End: 1/31/2026


The Opportunity:

CACI is seeking a skilled Software Developer for our Summer 2026 Makalu internship program. If you are enthusiastic about creating innovative products and components utilizing modern technologies, this opportunity may be a perfect fit for you. You will be engaging in a dynamic, start-up-like environment focused on new development within an agile framework. This role requires full-time, on-site presence at our locations in Denver, CO, and Sterling, VA

 
Responsibilities:

On Team Makalu, typical responsibilities include proactively designing the architecture for new components, while also suggesting ways to improve the application and overall UI/UX.  Our team works closely together with on-site and remote engineers developing front-end applications and back-end microservices, all dedicated to creating the best products and user experience possible.

Duties include but are not limited to:

  • Day-to-day expectations include solving challenging, but rewarding technical problems, meeting program objectives within the agile development cycle, suggesting ways to improve UX/UI and the software baseline, and introducing new ways to meet mission needs.
  • Be part of an agile team where communication skills and the ability to execute within the established development process are paramount to your and the team's success.
  • Work on new technologies, striving to stay customer-focused and thriving on challenges to build new UI applications.
  • Utilize industry proven design patterns and open-source tools.
  • Contribute to a positive and upbeat team atmosphere.



Qualifications:

Required: 

  • Must be able to obtain and maintain applicable TS/SCI with Poly.
  • Must currently be enrolled in a full-time Undergraduate, or Graduate Student. If Undergraduate or Graduate, pursing a degree in Computer Science or related field is preferred, not required.
  • Entry Level experience and knowledge of Coding.
  • Experience using REST-based web services.
  • Familiarity with Agile software development methodologies.
  • Familiarity with modern web technologies and techniques such as HTML5, CSS, CSS pre-processors (e.g. SASS, Less, Stylus), or JavaScript build tools (e.g. Browserify, WebPack, Closure).
  • Familiarity with Java Spring Boot
  • Strong organizational skills and attention to detail.
  • Strong verbal and written communication skills.
  • Experience with Linux environment and Linux shell scripting.



Desired:

  • An eagerness to learn a modern infrastructure and be a part of a team supporting mission critical systems.
  • Familiarity with real-time communication mechanisms such as WebSockets.
  • Familiarity with Node, Cesium, and/or Open Layers.
  • Familiarity with Spring, Docker, and/or Kubernetes.
  • Knowledge of microservices based architecture.
  • Familiarity with Elasticsearch and SQL based databases
  • Familiarity with emerging trends in desktop, web, and mobile app development.
  • Experience with deployments, dev ops, and / or AWS​ Experience with Git.

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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.

Learn more about CACI here.

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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. Learn more here.

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:

$39,900-$79,900

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.

About CACI

CACI

CACI is a leading U.S. defense and intelligence technology company that supports some of the most critical missions across the Department of Defense, intelligence community, and federal civilian agencies. With decades of experience in cybersecurity, electronic warfare, software development, and mission systems, CACI focuses on helping government customers modernize operations and respond to rapidly evolving national security threats.

For job seekers, CACI offers opportunities to work across a wide range of high-impact fields, including software engineering, cyber operations, intelligence analysis, IT modernization, communications, and defense systems engineering. The company is especially attractive to veterans, cleared professionals, and mission-driven technologists, with a significant portion of its workforce holding security clearances and military experience. CACI careers often involve directly supporting operational missions where performance and reliability matter in real time.

Unlike pure product companies, CACI operates at the intersection of consulting, engineering, and mission support—building and integrating systems that help the U.S. government improve decision-making, secure networks, and maintain battlefield and intelligence superiority. Employees often work on long-term government programs involving cloud migration, electronic warfare, counter-drone systems, and enterprise IT modernization across air, land, sea, space, and cyber domains.

As national security priorities continue to shift toward cyber defense, AI-enabled systems, and rapid modernization of government infrastructure, CACI remains a major employer in the defense services ecosystem. For professionals seeking stable, mission-focused work with strong demand for technical talent and opportunities to support real-world operations, CACI continues to stand out as a top-tier defense industry employer.

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