Infrastructure Engineer

Site Reliability Engineer (SRE)

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.

CoStar Real Estate Manager are looking for a Site Reliability Engineer (SRE) to join our high-impact SaaS infrastructure team. In this role, you'll play a critical part in maintaining and scaling the reliability, security, and performance of our hybrid cloud platform. You will be instrumental in driving automation, observability, and operational excellence across our hybrid infrastructure spanning VMware, Windows Server, Ubuntu Linux, Kubernetes, and modern service mesh technologies like ISTIO.

This is an ideal opportunity for a systems engineer or DevOps specialist ready to take ownership of critical SaaS infrastructure and reliability processes.

This position is located in Atlanta, GA and has the work schedule of 4 days onsite and 1 day remote.

Infrastructure & Systems Operations

• Manage and support production and staging environments running Windows Server 2019/2022 and Ubuntu Linux across on-prem (VMware) and AWS cloud platforms.

• Administer and optimize VMware vSphere and vCenter environments for performance, reliability, and resource efficiency.

Reliability Engineering

• Build and maintain robust monitoring, alerting, and observability systems to ensure 99.9%+ SLA for our SaaS applications.

• Implement auto-scaling, self-healing infrastructure components, and reduce manual toil via automation.

• Develop and run chaos engineering experiments and load testing to simulate production-like conditions.

Authentication & Security

• Integrate and manage SAML-based authentication for enterprise customers using tools such as PingFederate.

• Collaborate with product and security teams to ensure secure authentication, authorization, and user provisioning flows.

Database Operations

• Coordinate with DBA team for SQL Server 2019/2022 instances used by customer-facing SaaS apps, including replication, performance tuning, and disaster recovery.

• Automate routine database operations and assist developers with optimized query performance.

Networking & Firewall Management

• Configure and maintain Checkpoint firewalls and VPN solutions to ensure secure connectivity between cloud, on-prem, and customer environments.

• Work with security and compliance teams to ensure network segmentation, secure egress, and intrusion prevention systems are in place.

Incident Response & Postmortems

• Participate in a 24/7 on-call rotation to handle production incidents.

• Lead post-incident analysis, document findings, and implement remediation plans to improve system reliability and reduce MTTR.

Required Skills:

• 5+ years of experience in Site Reliability, DevOps, or Systems Engineering roles in a SaaS or hybrid-cloud environment.

• Strong experience with Windows Server 2019/2022, Ubuntu Linux, and VMware infrastructure.

• Hands-on production experience with Kubernetes and ISTIO Service Mesh.

• Proficiency in querying SQL Server 2019/2022 environments.

• Understanding of SAML-based authentication and identity federation tools like PingFederate.

• Strong scripting and automation skills (e.g., PowerShell, Bash, Python).

• Knowledge of network security, Checkpoint firewalls, and secure infrastructure principles.

Preferred Skills:

• Experience in a regulated SaaS environment (e.g., SOC 2, HIPAA, GDPR).

• Experience with cloud platforms (AWS, Azure) and hybrid infrastructure.

• Familiarity with observability tools (e.g., Prometheus, Grafana, Datadog, ELK Stack).

• Kubernetes certification (CKA, CKAD).

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 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
• 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 Diversity, Equity, & Inclusion Employee Resource Groups
• Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks

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