Security Engineer Intern — Hybrid, Hands-on Cyber Defense

CoStar Group; Arlington (TX); Hybrid; USD 55,000 - 62,000; Full time

Job summary

CoStar Group in Arlington, VA is seeking a Security Engineering Intern for a 10-week summer program. You’ll gain hands-on experience in enterprise cybersecurity, tackling vulnerability management, endpoint security, threat detection, and security controls under a dedicated mentor.

The internship provides three workstreams: prototype development, cybersecurity operations, and a project with real impact, with Monday–Thursday in the office and Friday remote, designed to prepare you for a career in

Qualifications

• Pursuing a bachelor’s degree in Cybersecurity, Computer Science, IT, Software Engineering, or related field.
• Must plan to return to school after Summer 2027 internship.
• Minimum 3.0 GPA.
• Interest in cybersecurity demonstrated outside of degree program.
• Available for full 10-week, 40-hour internship.
• Experience in cybersecurity, networking, OS, cloud, scripting, automation, or related tech.

Responsibilities

• Develop a working prototype to solve a cybersecurity challenge.
• Assist in cybersecurity operations and tuning controls.
• Learn from experienced team members and build a foundation in modern cybersecurity practices.

Skills

Analytical skills

Communication skills

Problem solving

Education

Bachelor's degree in Cybersecurity/CS/IT/SE

Tools

Windows

Linux

Python

Job description

CoStar Group in Arlington, VA is seeking a Security Engineering Intern for a 10-week summer program. You’ll gain hands-on experience in enterprise cybersecurity, tackling vulnerability management, endpoint security, threat detection, and security controls under a dedicated mentor.

The internship provides three workstreams: prototype development, cybersecurity operations, and a project with real impact, with Monday–Thursday in the office and Friday remote, designed to prepare you for a career in