Security Engineer Intern - Arlington, VA

Visual Lease; Arlington (VA); Hybrid; USD 55,000 - 62,000; Full time

Job summary

CoStar Group in Arlington, VA seeks a Security Engineering Intern to gain hands-on experience in vulnerability management, endpoint security, and threat detection within a large enterprise cybersecurity program.

You will work on three streams: prototype development, security operations, and a mentored cybersecurity project, with a dedicated mentor supporting career growth throughout the 10-week Summer internship.

Qualifications

• Pursuing a bachelor’s degree in Cybersecurity, CS, IT, or a related field.
• GPA 3.0 or higher and plan to return after Summer 2027.
• Experience or coursework in cybersecurity, networking, OS, cloud, scripting.

Responsibilities

• Develop a working prototype to solve a cybersecurity challenge.
• Support cybersecurity operations: respond to alerts, analyze findings, tune controls.
• Collaborate with mentors on cybersecurity projects and learn modern practices.

Skills

Cybersecurity

Networking

Cloud computing

Scripting

Automation

Analytical thinking

Communication

Education

Bachelor's degree

Tools

Windows

Linux

PowerShell

Python

Job description

Security Engineer Intern - Arlington, VA

Job Description

Company Overview: CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index, CoStar Group is on a mission to digitize the world’s real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. We have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. We’ve continually refined, transformed, and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation. This is how we deliver for our customers, our employees, and investors. By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate. Learn more about CoStar.

Role Description

We are seeking a Security Engineering Intern to join our team, where you'll gain hands-on experience in a large enterprise cybersecurity program in areas such as vulnerability management, endpoint security, threat detection, security controls, and emerging areas such as AI security. CoStar Group’s Security Engineering internship program provides hands-on experience through three workstreams:

• Develop a working prototype to solve a cybersecurity challenge.
• Perform cybersecurity operations such as responding to alerts, analyzing findings, or tuning controls.
• Assist in a cybersecurity project while learning from experienced team members and building a foundation in modern cybersecurity practices.

Each intern is paired with a dedicated mentor to support technical development, career growth, and day-to-day learning throughout the program. This internship is designed to provide exposure to the types of work performed by Security Engineers and help prepare students for future careers in cybersecurity.

This position is located in Arlington, VA and offers a schedule of Monday to Thursday in office and the option to work from home on Friday.

Technologies & Security Areas You May Explore

• Vulnerability scanning and vulnerability management tools
• Endpoint security technologies
• Security monitoring and incident response processes
• Security tool integrations and automation
• Identity and access management concepts
• Cloud and infrastructure security concepts
• Scripting and automation using Python, PowerShell, Bash, or similar technologies
• AI security and emerging cybersecurity technologies

Basic Qualifications

• Currently pursuing a bachelor’s degree from an accredited, not-for-profit university or college in Cybersecurity, Computer Science, Information Technology, Software Engineering, or a comparable major.
• Must be planning to return to school following the completion of the Summer 2027 internship.
• Must have an expected graduation date of December 2027 - June 2028.
• Minimum 3.0 cumulative GPA.
• Demonstrated interest in cybersecurity through personal endeavors outside of undergraduate degree program.
• Available to participate in the full 10-week summer internship program and commit to a 40-hour work week throughout the internship.
• Coursework, project, internship, research, or work experience related to cybersecurity, networking, operating systems, cloud computing, scripting, automation, system administration, or comparable technical disciplines.
• Ability to communicate technical information clearly in written and verbal formats.
• Strong analytical, troubleshooting, and problem-solving skills.

Preferred Qualifications and Experiences

• Ability to describe cybersecurity concepts such as vulnerability management, endpoint security, network security, authentication, access controls, or incident response.
• Exposure to scripting or automation using Python, PowerShell, Bash, or similar languages.
• Familiarity with Windows, Linux, networking, or cloud environments.
• Demonstrated initiative through cybersecurity projects, coursework, research, clubs, competitions, or extracurricular activities.
• Experience collaborating on academic, project, research, or team-based work.
• Exposure to AI, machine learning, automation, or AI security concepts through coursework, projects, internships, or personal learning.
• Security certifications or coursework such as Security+, Network+, CySA+, or comparable cybersecurity training are a plus.

What’s in it for you?

When you join CoStar Group, you’ll experience a collaborative and innovative culture working alongside the best and brightest to empower our people and customers to succeed.

The final salary or hourly rate offered for this role will fall within the range set forth below based on a variety of factors, including but not limited to, geographic location, skills, and competencies.

Base Compensation: $40 - $45 (Hourly)

We welcome all qualified candidates who are currently eligible to work full-time in the United States to apply. However, please note that CoStar Group is not able to provide visa sponsorship for this position.

CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing