Senior Site Reliability Engineer Job Description **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 manage petabytes of real-time data, millions of active users, and mission-critical systems across a globally distributed platform. As we scale, we're seeking a **Senior Site Reliability Engineer (SRE)** to play a pivotal role in designing and maintaining the resilience, performance, and scalability of our data infrastructure powering our core products. This isn't a keep-the-lights-on role, it's an opportunity to help architect the future of real estate intelligence at an organization that thrives on data, uptime, and innovation. You'll be solving complex reliability challenges, optimizing systems that serve billions of transactions, and shaping infrastructure practices across our cloud and on-prem environments. This position is located in Arlington, VA and is in office Monday through Thursday and work from home on Friday. **Responsibilities** + Lead the design of observability, automation, and incident response frameworks + Own reliability for massive-scale systems and services used globally + Collaborate cross-functionally with engineering, product, and data teams to evolve our core platforms + Influence platform direction and infrastructure strategy across cloud and hybrid deployments + Drive large initiatives around performance, failover, disaster recovery, and cost optimization + Thrive on scale, reduce complexity, and systems-level thinking + Bring a product mindset to reliability, thinking beyond uptime to customer experience and business impact + Mentor others and lead by example in high-performance environments **Basic Qualifications** + Bachelor’s Degree required from an accredited, not for profit university or college. + A track record of commitment to prior employers + 5+ years of experience managing large distributed systems using mass scale architecture + Have experience managing infrastructure that supports high-volume, low-latency applications + Experience designing, implementing, and maintaining APM and observability solutions for large-scale data infrastructure + Production experience with Kubernetes, Docker, and container deployment strategies + Infrastructure as code using Cloudformation, Terraform, or similar platforms + Experience in AWS is a must; experience in Azure or Google cloud as a plus + Experience with any relational or document databases + Experience with configuring Content Delivery Networks (CDN) for performance, caching, and global traffic management + Familiarity with infrastructure foundation components of large networks in AWS and on-prem (e.g., systems & network administration, DNS, hypervisors, containers, databases, multi-datacenters) + Background with Bash scripting and programming languages such as Java, C#, Python, NodeJS + Solid sizing and estimation techniques for small to medium size tasks and projects **Preferred Qualifications and Skills** + Server-less architecture methodologies + Familiarity with PCI compliance and remediation + Experience in REST API or Microservices development **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 Diversity, Equity, & Inclusion 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. \#LI-AR 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 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 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 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 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 calling 1-855-840-1715 or by sending an email to recruiting@costargroup.com .