Senior Network Security Engineer

Senior Network Security Engineer

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Job Description

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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 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.   

We are looking for a Senior Network Security Engineer to improve our information security posture at CoStar Group. The scope of responsibility spans an 85 office WAN (including SD-WAN, Wi-Fi, route, switch, and firewall), highly scaled physical colocation data centers with route, switch, firewall, LTM, GTM), multi-cloud networking (VPCs, VNets, CDN, GTM, AWS TG, ANF, K8s networking, mesh service networking) and zero trust privileged network access. You will communicate and reinforce security concepts to technical and non-technical audiences across the CoStar Enterprise.

The ideal candidate possesses several years of hands-on senior level experience in either office WAN/LAN security OR (data center AND cloud networking environments) in large software environments. Successful candidates will be 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 is located in Arlington, VA or Richmond, VA and is onsite Monday – Thursday, option to work from home on Friday.

Responsibilities

• Audit existing network designs and configurations and champion improvements
• Evaluate firewall change requests – both on-premise and cloud
• Design, enforce, and audit policy for various blades of a Next Generation Firewall (NGFW), load balancers, routers, switches, Wi-Fi controllers, etc.
• Tune and update Intrusion Prevention Systems (IPS)
• Use security tools to test and detect vulnerability issues and coordinate remediation
• Perform security review and ensure proper monitoring/logging - including permissions of users, open ports/services, and overall network setup 
• Collaborate with threat management on detection engineering of network telemetry
• Conduct threat hunting in the CoStar enterprise 
• Participate in 24x7 on-call rotation
• Follow, develop, and improve network and security configuration policies, standards, and procedures
• Assist with the move towards a zero-trust methodology
• Strengthen AWS network security posture on east/west and north/south traffic.
• Lead the creation of a secure and automated certificate management solution
• Uplift network protocols and cipher suites across the enterprise
• Uplift DNS security including Email DNS security (DMARC, SPF)

Basic Qualifications

• Bachelor’s Degree required from an accredited, not for profit university or college.  
• A track record of commitment to prior employers 
• 4 Total years of experience across network engineering and/or cybersecurity, with a minimum of at least 2 years of experience in each.
• Proficient in a scripting or programming language (Terraform, Python, Perl, PowerShell, Ansible, Cloud Formation, etc.)
• At least one certification in either security or networking such as SANS/GIAC, CISSP, CCNA, CCNP, etc.

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, tuition reimbursement, and an inter-office exchange program.

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

• Comprehensive healthcare coverage: Medical / Vision / Dental / Prescription Drug
• Life, legal, and supplementary insurance