Associate Security Engineer - Arlington, VA

CoStar Group; Arlington (VA); Hybrid; USD 100,000 - 105,000; Full time

Benefits offered by this job

Tuition reimbursement

401(k) with matching

Paid time off

On-site fitness center

Job summary

CoStar Group in Arlington, VA is seeking an Associate Security Engineer. The role supports cybersecurity controls across endpoints, identities, cloud platforms, and applications, with hands-on learning in vulnerability management, endpoint security, threat detection, software security, and AI security.

The position emphasizes a proactive, learning-minded candidate who can document findings, communicate clearly, and collaborate with technical teams.

Qualifications

• Pursuing a bachelor’s degree with expected graduation Dec 2026 – Jun 2027.
• Minimum 3.0 cumulative GPA.
• At least 2 months of relevant internship or co-op experience.
• Exposure to scripting or programming languages such as PowerShell, Bash or Python.
• Ability to document findings and communicate technical information clearly.

Responsibilities

• Support implementation and maintenance of cybersecurity controls across endpoints, identities, cloud platforms, applications, and business processes.
• Learn and reinforce security concepts while gaining hands-on experience in vulnerability management, endpoint security, threat detection and response, and AI/automation topics.
• Assist with deploying, supporting, and improving security technologies under guidance of senior engineers.

Skills

PowerShell

Bash

Python

GPA 3.0

Internship/Co-op

Communication

Education

Bachelor's degree in Cybersecurity/CS/IT/Software Engineering (or related)

Job description

Associate Security Engineer - 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:

In this role, you'll support the implementation and maintenance of cybersecurity controls across CoStar Group including endpoints, identities, cloud platforms, applications, and business processes. You will learn and reinforce security concepts to technical and non-technical audiences while gaining hands‑on experience in areas such as vulnerability management, endpoint security, security tool integration, threat detection and response, software security, and emerging areas such as AI security and automation.

Associate Security Engineers assist with deploying, supporting, and improving security technologies under the guidance of experienced team members. The successful candidate will be a motivated self-starter who is eager to learn new tools, contribute to security efforts, and help strengthen security practices across the CoStar Enterprise.

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.

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 have an expected graduation date of December 2026 - June 2027.
• Minimum 3.0 cumulative GPA.
• Demonstrated interest in cybersecurity through personal endeavors outside of undergraduate degree program.
• At least 2 months of previous relevant internship or co‑op experience.
• Exposure to scripting or programming languages such as PowerShell, Bash, Python, or similar languages.
• Ability to troubleshoot technical issues, identify potential causes, and document findings or recommended next steps.
• Ability to communicate technical information clearly in written and verbal formats.
• Ability to follow established processes, document work accurately, and collaborate with technical teams.

Preferred Qualifications and Experiences:

• Sec+
• CySA+
• Security Operation Center experience
• Ability to describe basic cybersecurity concepts such as vulnerability management, endpoint security, network security, authentication, access controls, or incident response.
• Exposure to AI, machine learning, automation, or AI security concepts through internship, co‑op, academic, or personal projects.

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.

We offer you generous compensation and performance-based incentives. CoStar Group also invests in your professional and academic growth with internal training and tuition reimbursement.

Our benefits package includes (but is not limited to):

• Comprehensive healthcare coverage: Medical / Vision / Dental / Prescription Drug
• Life, legal, and supplementary insurance
• Virtual and in person mental health counseling services for individuals and family
• Commuter and parking benefits
• 401(K) retirement plan with matching contributions
• Employee stock purchase plan
• Paid time off
• Tuition reimbursement
• On-site fitness center and/or reimbursed fitness center membership costs (location dependent)
• Access to CoStar Group’s Employee Resource Groups
• Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks

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: $100,000 - $105,000 annually

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