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Junior Developer Intern Jobs in Colorado (NOW HIRING)

M. A. Mortenson Company

Sustainability Intern

Denver, CO · On-site

$18/hr

As a top builder, developer, and EPC (Engineering, Procurement, and Construction), our expertise ... Are currently enrolled as an undergraduate junior * Have a basic understanding of construction and ...

Mortenson

Sustainability Intern

Denver, CO

$18/hr

As a top builder, developer, and EPC (Engineering, Procurement, and Construction), our expertise ... Are currently enrolled as an undergraduate junior * Have a basic understanding of construction and ...

True Anomaly

GSE Engineering Intern

Denver, CO · On-site

$28 - $32/hr

Fall Intern Program will run September - December 2026 * Must be able to provide own transportation ... Have completed their Junior and/or Senior year * GPA of 3.5 or above * Familiarity with CAD tools ...

Solid Power

Product Engineering Intern

Thornton, CO · On-site

$25/hr

Solid Power is seeking a Product Engineering Intern to join our talented team of engineers and ... Enrolled at least at a junior level in a bachelor's program in a STEM field * Experience with ...

True Anomaly

GSE Engineering Intern

Denver, CO · On-site

$28 - $32/hr

Fall Intern Program will run September - December 2026 * Must be able to provide own transportation ... Have completed their Junior and/or Senior year * GPA of 3.5 or above * Familiarity with CAD tools ...

Mortenson

Environmental Intern

Denver, CO · On-site

$18/hr

As a top builder, developer, and EPC (Engineering, Procurement, and Construction), our expertise ... Are currently enrolled as an undergraduate junior * Have a basic understanding of construction and ...

M. A. Mortenson Company

Environmental Intern

Denver, CO · On-site

$18/hr

As a top builder, developer, and EPC (Engineering, Procurement, and Construction), our expertise ... Are currently enrolled as an undergraduate junior * Have a basic understanding of construction and ...

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Junior Developer Intern information

What is a junior developer intern?

A Junior Developer Intern is an entry-level position for individuals, often students or recent graduates, who are interested in gaining hands-on experience in software development. They typically work under the supervision of experienced developers, assisting with coding, debugging, testing, and other tasks related to software projects. The role is designed to help interns learn industry practices, develop technical skills, and build a foundation for a future career in software development. Junior Developer Interns often work on real-world projects and may contribute to both front-end and back-end development depending on the company’s needs.

What kinds of projects and responsibilities can a junior developer intern expect during their internship?

As a Junior Developer Intern, you can expect to work on a variety of tasks such as writing and debugging code, assisting with software testing, and supporting more experienced developers on ongoing projects. Interns often participate in daily stand-up meetings, collaborate with team members using version control tools like Git, and may be assigned small features or bug fixes to help them learn the codebase. This role offers hands-on experience with real-world development workflows and provides opportunities to receive mentorship and feedback, which are valuable for skill development and future career growth.

What are the key skills and qualifications needed to thrive as a junior developer intern, and why are they important?

To thrive as a Junior Developer Intern, you typically need a foundational understanding of programming languages (such as JavaScript, Python, or Java), problem-solving skills, and a relevant degree or coursework in computer science or a related field. Familiarity with version control systems like Git, basic knowledge of development frameworks, and experience with collaboration tools such as Jira or Slack are often expected. Strong communication, eagerness to learn, and adaptability help interns excel in team environments and respond to feedback. These skills and qualities are crucial for contributing to projects, learning quickly, and building a successful career in software development.

What are the most commonly searched types of Junior Developer jobs in Colorado?

The most popular types of Junior Developer jobs in Colorado are:

What are popular job titles related to Junior Developer Intern jobs in Colorado?

For Junior Developer Intern jobs in Colorado, the most frequently searched job titles are:

What job categories do people searching Junior Developer Intern jobs in Colorado look for?

The top searched job categories for Junior Developer Intern jobs in Colorado are:

What cities in Colorado are hiring for Junior Developer Intern jobs?

Cities in Colorado with the most Junior Developer Intern job openings:

Junior Developer Intern jobs near you
Infographic showing various Junior Developer Intern job openings in Colorado as of August 2026, with employment types broken down into 80% Full Time, 6% Part Time, and 14% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution.

Software Developer/Data Scientist Intern - Summer 2027

CACI International, Inc.

Denver, CO • On-site

$39K - $79K/yr

Part-time

Medical, Retirement, PTO

Posted 7 days ago

Job description

Job Title: Software Developer/Data Scientist Intern - Summer 2027
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
Anticipated Posting End: 10/31/2026
The Opportunity:
CACI is seeking a talented Junior Software Developer and/or Data Scientist Intern to join our dynamic team. In this role, you will contribute meaningfully to national security missions by developing and delivering innovative, technology-driven solutions. This internship provides an exceptional opportunity to learn, grow, and collaborate on multidisciplinary projects that integrate software with engineering and scientific domains.
Opportunities are available in Denver, CO; Sarasota, FL; and Sterling, VA. This position is fully on-site.
Responsibilities:
  • Assist in providing software engineering and web development expertise in support of software development and day-to-day operations of system operations and maintenance activities.
  • Collaborate with a team to develop and maintain a web-based thin-client software application.
  • Contribute to the development and maintenance of back-end services and processing.
  • Participate in the design and development of new capabilities and applications.
  • Derive requirements through interactions with project management and systems engineering teams.
  • Develop, test, deploy, and maintain software applications under supervision.
  • Adhere to software deployment best practices and configuration management workflows.
  • Support integration testing efforts.
  • Gain exposure to multidisciplinary solutions and products such as simulations, avionics, command and control systems, medical devices, sensors, and electro-mechanical systems.

Qualifications:
Required:
  • Currently pursuing a Bachelor's degree in Computer Science, Software Engineering, Data Science or a related field.
  • Basic understanding of User Interfaces (UIs), cross-browser compatibility, general web functions, and standards.
  • Web Development Skills: Familiarity with Java, JavaScript, HTML, HTML5, CSS, cross-browser compatibility, Web User Interface Design, Security Principles, Object-Oriented Design, Web Services, Groovy, Grails, and Angular.
  • Backend Development Skills: General knowledge of Python and Java.
  • No clearance requirement to begin employment. Interns will be required to obtain TS/SCI clearance as a condition of continued employment.
  • Some programming skills and experience.
  • Basic knowledge of Docker Containers.
  • Familiarity with build tools such as Jenkins, GitLab, and CI/CD development philosophies.

Desired:
  • Some programming skills/experience
  • Docker Containers
  • Build tools such a Jenkins, Gitlab, and CI/CD development philosophies

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:
$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.

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