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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 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 to our customers, our employees, and investors. By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate.

Homes.com is already one of the fastest growing real estate portals in the industry; we are driven to be #1. Just ask Brad Bellflower, Chief Change Officer at Apartments.com. After its acquisition in 2014, Apartments.com quickly turned into the most popular place to find a place. Proven success at the highest level – and we’re doing it again with the new Homes.com. Homes.com is a CoStar Group company with 20+ years' experience in leading and growing digital marketplaces. We pride ourselves on continually improving, innovating, and setting the standard for property search and marketing experiences. With Homes.com we’re building a brand on the cusp of defining the industry. We’re looking for big thinkers, brave leaders, and creative advertising wizards ready to influence a new age of homebuying within a tried-and-true, award-winning company.Learn more about Homes.com.

Homes.com is growing quickly and we’re looking for a Senior Data Engineer to help accelerate our growth. This role will be responsible for helping build out sitewide tracking architecture on Homes.com and then feeding that data into user-friendly KPI dashboards which track site performance and product usage and provide day-to-day insights into consumer behavior. This individual will help build and deliver the data engineering architecture for Homes.com and work across all departments to provide analysis and insights for future growth. You will be part of various aspects of our data management, ranging from designing and maintaining automated data infrastructure and delivering Data engineering and Analytics solutions to facilitating data access and analysis for key company teams.

CoStar is investing heavily in artificial intelligence to accelerate software delivery, improve platform observability, automate research and business workflows, enhance product experiences through intelligent agents and skills, and improve data quality across enterprise systems. Successful candidates will demonstrate a willingness to learn, adopt, and apply AI technologies responsibly to solve complex business and engineering challenges.

This position is located in Arlington, VA and offers a schedule of Monday to Thursday in the office and the option to work from home on Friday.

• Design and Oversee implementation of dimensional modeling, database design, and cloud data platform structures (e.g., Databricks, Snowflake, BigQuery)
• Develop data platform framework to build secure data warehouses and data lakehouses applying principles of Medallion Architecture
• Design, develop, and maintain scalable data pipelines and ETL processes using Databricks, Snowflake, and other AWS services
• Implement and optimize Spark jobs, data transformations, and data processing workflows in Databricks
• Building and deploying AI/ML models: Integrate Machine Learning into data pipelines, leverage Databricks ML and AWS ML to develop predictive models and drive business insights
• Define and Apply AI-assisted software development practices to improve engineering productivity and code quality
• Understand various data domains and be able to translate them through data transformations to suit various business needs
• Oversee automated data infrastructure: Collaborate with software engineering and product teams to streamline data tracking in our products
• Ability to integrate data from disparate sources via cross domain data stitch into existing data model
• Implement data governance, lineage tracking, testing, and monitoring frameworks to guarantee data integrity
• Hands-on data optimization and query performance
• Liaise with key company teams (DBA, DevOps, SecOps…) for data accessibility and analysis
• Mentor and manage engineers and analysts in the normal execution of their responsibilities
• Successfully implement software development projects to specification and within scheduled timelines and budget parameters
• Leverage AWS DevOps and CI/CD best practices to automate the deployment, through terraform, and management of data pipelines and infrastructure

• Bachelor's degree required from an accredited, not-for-profit, in-person college/university
• A track record of commitment to prior employers
• 6+ years of hands‑on experience in software development, delivering high‑quality solutions
• Strength in Data Engineering, with strong proficiency in Python, PySpark, and SQL
• Solid foundation in Object‑Oriented Programming principles and best practices
• Demonstrated success in building and launching data‑driven products operating at terabyte scale
• Proven record of designing and implementing Enterprise Level secure, and accurate Data platform
• Ability to translate technical requirements into robust architecture, data models, and ETL strategies
• Practical experience with cloud‑based databases, including both relational and non‑relational systems
• Knowledge of business intelligence software (i.e. Power BI or similar tools)
• Understanding of AI technologies and hands‑on experience leveraging AI tooling in development (Claude Code, GitHub Copilot, Cursor, Gemini, Grok)
• Ability to retrieve, synthesize, and present critical data in structures that is immediately useful to answering specific ad‑hoc questions
• Hands‑on data experience on optimization, data quality checks, data accuracy and query performance improvement

• Hands‑on experience or familiarity with big data platforms such as Databricks or Snowflake
• Proficiency with cloud platforms, including AWS or Azure
• Experience working with NoSQL databases (e.g., DynamoDB) and object storage systems (e.g., Amazon S3, GCS, etc.)
• Practical knowledge of event streaming technologies, especially Kafka
• Experience leveraging AWS compute and container services for scalable solutions
• Familiarity with large language models (LLMs), prompt engineering, or agent‑based architectures
• Great analytical and problem‑solving skills, with the ability to tackle complex technical challenges
• Strong Ability to understand technical challenges and complex designs, and communicate into simple business ideas, or solutions with senior management/stakeholders

• 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

The final salary or hourly rate offered for this role will 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: $128,000 - $190,000 (Annually)

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.

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