Full-Stack Software Development Intern

What We Do: The SEI helps advance software engineering principles and practices and serves as a national resource in software engineering, computer security, and process improvement.

The SEI works closely with defense and government organizations, industry, and academia to continually improve software-intensive systems. Our core purpose is to help organizations improve software engineering capabilities and develop or acquire the right software, defect free, within budget and on time, every time.

Position Summary You will work as a part of the Cyber Mission Readiness Directorate within CERT and will collaborate with a team of software engineers, learning engineers, and cybersecurity experts focused on building the software behind cyber training, exercises, and assessments.

You will assist members of the Operational Readiness and Evaluation team in developing features and fixes for a suite of open-source web applications used to run cyber exercises, virtual labs, and online courses.

You will write automated tests and help find and fix defects before applications are used in live training events. You will help add learner activity tracking (xAPI) and AI-assisted features to existing applications.

This internship begins in Fall 2026, with the option to continue through the Spring 2027 semester. You will contribute to a variety of core functions including: Full-stack web application development (C#/.

NET and Angular) Learning management system plugin development (PHP and Moodle) Automated unit, integration, and end-to-end testing xAPI instrumentation and AI feature integration Requirements: Enrolled in a degree granting program.

Willingness to travel to various locations to support the SEI’s overall mission. This includes within the SEI and CMU community. You will be subject to a background check and must be eligible to work in the United States without Visa sponsorship.

Knowledge, Skills and Abilities: Ability to critically think and problem solve Familiarity with an object-oriented programming language, such as C#, Java, or TypeScript Familiarity with web development fundamentals, such as HTTP, REST APIs, HTML, and CSS Familiarity with Git and collaborative workflows, such as branching and merge requests Ability to collaborate internally and externally with professional engineers, instructional designers, and subject matter experts Willingness to learn new technologies with cross-functional teams Must be organized, detail-oriented, and have the capacity to clearly document and communicate any findings Desired Experience: Experience with ASP.

NET Core or Angular Experience with PHP or a learning management system, such as Moodle Experience writing automated tests, such as with Playwright, xUnit, or Jest Experience with relational databases, such as PostgreSQL These experiences may also come from education-driven experiences or extracurriculars.

Job Function Breakdown: Implement features and fixes in web application front ends and APIs: 40% Write automated unit, integration, and end-to-end tests: 25% Instrument applications for xAPI and integrate AI-assisted features: 20% Write documentation and demonstrate work to the team: 15% TOTAL = 100% This is a part-time, fully onsite position based in our Pittsburgh office.

Carnegie Mellon University is an Equal Opportunity Employer/Disability/Veteran. Location Pittsburgh, PA Job Function Non-CMU Students Position Type Intern (Fixed Term) Full time/Part time Part time Pay Basis Hourly More Information: Please visit “Why Carnegie Mellon” to learn more about becoming part of an institution inspiring innovations that change the world.

Click here to view a listing of employee benefits Carnegie Mellon University is an Equal Opportunity Employer/Disability/Veteran. Statement of Assurance Always focused on the future, the Software Engineering Institute (SEI) advances software as a strategic advantage for national security.

We lead research and direct transition of software engineering, cybersecurity, and artificial intelligence technologies at the intersection of academia, industry, and government.

We serve the nation as a federally funded research and development center (FFRDC) sponsored by the U.S. Department of Defense (DoD) and are based at Carnegie Mellon University, a global research university annually rated among the best for its programs in computer science and engineering.

Our people apply special knowledge and skills and are part of an elite research university. We perform research and apply our expertise every day to foresee problems and exploit opportunities in software engineering, AI engineering, and cybersecurity.

Quality software that is secure will control the future. At CMU SEI, we are engineering that ever-greater software-fueled future. Need Help? For technical assistance, email hr-help@andrew.

cmu.edu or call 412-268-5072. We are committed to providing an accessible experience throughout our recruitment process. If you need assistance or a reasonable accommodation at any stage of the application, interview, or hiring process, please contact Equal Opportunity Services by email at employeeaccess@andrew.

cmu.edu or by phone at 412-268-3930.