Threat Detection Security Engineer

CoStar Realty Information, Inc.; Arlington (VA); On-site; USD 90,000 - 154,000; Full time

Benefits offered by this job

Healthcare coverage

401(K) retirement plan

Tuition reimbursement

Employee stock purchase plan

On-site fitness center

Job summary

CoStar Group in Arlington, VA is seeking a Threat Detection Security Engineer to join our security operations. This hybrid role balances incident response leadership with proactive threat hunting and defense improvement.

You will work with threat intelligence, detection engineering, and security controls teams to strengthen our enterprise security program, mentor colleagues, and participate in 24x7 on‑call rotations.

Qualifications

• Bachelor’s Degree required from an accredited university.
• 4+ years of hands-on security engineering experience.
• Experience with Microsoft/Azure security tooling.
• Ability to automate to increase detection and response.
• Excellent documentation and communication skills.
• Experience scripting with Python or low-code.

Responsibilities

• Own cyber security incidents from identification to resolution.
• Record artifacts and evidence accurately.
• Collaborate with threat intel and security controls teams.
• Escalate triage and guide investigations.
• Maintain Incident Response Plan and processes.
• Lead Mitre Att&ck guidance and related practices.
• Perform threat hunts in the CoStar enterprise.
• Deliver training and quarterly tabletop exercises.
• Be a security advocate across the enterprise.
• Participate in 24x7 on-call rotation.

Skills

Incident response

Security engineering

Automation

Cloud security

Communication

Education

Bachelor’s Degree

Tools

Kubernetes

Microsoft Defender

Azure Sentinel

EOP

Azure security tooling

Job description

US-VA Arlington

Full time

Threat Detection Security Engineer

Job Description

Overview

CoStar Group 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.

The ideal candidate will balance strong communications skills, understanding of enterprise systems and attacker techniques, and technical skills to improve detection and defense implementations. This position will work in tandem with CoStar’s global cyber threat center team to provide continuous security coverage.

This position is in Arlington, VA or Richmond, VA and is in office Monday through Thursday with work from home on Friday.

Responsibilities

• Own cyber security incidents from identification to resolution
• Ensure incidents and corresponding artifacts and evidence are consistently and accurately recorded
• Work with threat intelligence, detection engineering and security controls team to build a holistic lifecycle around incident preparedness and resolution
• Operate as a point of escalation for alert triage and provide expert guidance for investigation and incident resolution
• Own, maintain, and improve the Incident Response Plan and the corresponding processes and procedures
• Team expert on Mitre Att&ck, tools, techniques, and practices of cyber attackers which you use to drive the overall strategy of the incident response team.
• Execute threat hunts in the CoStar enterprise
• Develop and deliver training as well as designing and delivering quarterly tabletop exercises
• Be a security advocate and point of contact for all things incident response through the enterprise.
• Participate in 24x7 on-call rotation

Basic Qualifications

• Bachelor’s Degree required from an accredited, not for profit, in person, university or college.
• A track record of commitment to prior employers
• 4+ years of hands-on security engineering experience
• Excellent documentation and communication skills
• Ability to identify opportunities for automation to increase detection and response efficacy.
• Experience with Microsoft/Azure security tooling
• Experience in scripting with a language such as Python or a low-code automation solution

Preferred Qualifications and Skills

• Experience performing incident response in cloud environments.
• Experience with Kubernetes environments and how to defend/attack them.
• Experience collaborating with threat intelligence and detection engineering
• Ability to work on a cultural diverse team that spans international time zones and foster an environment of inclusions and participation with all team members
• Ability to mentor and train team members to work effectively and adopt new skills.
• Ability to communicate with different levels of leadership across the enterprise to convey risk and drive urgency for risk remediation.
• Experience with Microsoft Security tooling (Defender, Sentinel, EOP etc.) 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.

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), with yoga studio, Pelotons, personal training, group exercise classes
• Access to CoStar Group’s Employee Resource Groups
• Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks

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.

The final salary or hourly rate offered for this role with 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: 90,000 - 154,000 Annually

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

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 37 years, giving us the perspective to create truly unique and valuable products and services. We’ve continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry and for our customers. 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.

CoStar Group is committed to creating a diverse environment and is proud to be an equal opportunity workplace and affirmative action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. CoStar Group is also committed to compliance with all fair employment practices regarding citizenship and immigration status.

If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access www.costargroup.com/careers as a result of your disability. You can request reasonable accommodations by sending an email to [e-mail] .