Senior Security Engineer

Senior Security Engineer

Job Description

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 and the NASDAQ 100, 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.

In this role, you'll communicate and reinforce security concepts to technical and non-technical audiences within the CoStar Enterprise. The ideal candidate will have experience implementing, using and updating standard security software in the areas of vulnerability scanning/management, leading remediation efforts, end-node security, security tool integration and orchestration for incident response.

As the security section grows, so will the tools and the Senior Security Engineer will be the person charged with implementing them. The successful candidate will be a self-starter motivated to learn new technologies and tools and assist in moving security forward as it is implemented within the CoStar Enterprise.

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

• Incident event handling – serve as the escalation tier for the team when there is an incident
• Lead incident response functions and reporting of findings
• Review technical security posture (network, application, database) for existing and newly acquired businesses or services
• Team expert on Mitre Att&ck, tools, techniques, and practices of cyber attackers
• Ability to script responses to observed threats
• Perform security review and monitoring of the production environment setup permissions of users, open ports/services and overall network setup
• Examine network, server, and application logs to determine trends and identify security incidents
• Use security tools to audit infrastructure, detect issues and coordinate remediation of any issues
• Conduct threat hunting in the CoStar enterprise
• Follow, develop and improve network and endpoint security configuration procedures
• Work with other teams to remediate discovered deficiencies.
• Participate in 24x7 on‑call rotation

• Bachelor’s Degree required from an accredited, not for profit university or college.
• A track record of commitment to prior employers
• One or more security certification such as SANS/GIAC, CISSP, CISM, GIAC Certified Incident Handler (GCIH), Certified Expert Incident Handler (CEIH) or equivalent
• 6+ years in Information Security
• Scripting/programming skills (Perl, Python, Power Shell)
• Experience with Windows Server 2012/2016 /2019 and Active Directory

• Excellent oral and written communication skills to work effectively with others regardless of departmental or geographic boundaries
• Experience with Microsoft Security tooling (Defender, Sentinel, EOP etc.) a plus
• Ability to produce detailed technical documentation
• Proficiency with PC software applications, E-Mail, and job associated applications/systems to expediently process work
• Requires good organization skills to produce quality work, within required specifications, and within scheduled timelines
• Excellent customer service skills

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…