Data Engineer II

As a Data Engineer II, you will support Homes.com by helping shape sitewide tracking architecture and ensuring data flows into KPI dashboards that inform day-to-day insights into consumer behavior. CoStar Group is focused on secure cloud data platforms, scalable pipelines, and practical analytics, with a role that also brings AI/ML model integration into the data lifecycle.

This onsite position is based in Arlington, VA. The salary range is USD 103,000 - 153,000 per year, and the role requires 3+ years of relevant hands-on experience. A bachelor’s degree from an accredited, not-for-profit, in-person college or university is required.

What you’ll do

• Design and oversee implementation of dimensional modeling, database design, and cloud data platform structures, including Databricks, Snowflake, and BigQuery
• Build a secure data platform framework for data warehouses and data lakehouses using 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
• Build and deploy AI/ML models by integrating machine learning into data pipelines, leveraging Databricks ML and AWS ML to develop predictive models and support business insights
• Apply AI-assisted software development practices to improve engineering productivity and code quality
• Translate knowledge of multiple data domains into transformations that meet changing business needs
• Oversee automated data infrastructure and partner with software engineering and product teams to streamline product data tracking
• Integrate data from disparate sources using cross-domain data stitching to align with existing data models
• Implement data governance, lineage tracking, testing, and monitoring frameworks to help ensure data integrity
• Perform hands-on data optimization and query performance improvements
• Work with key teams (DBA, DevOps, SecOps) to support data accessibility and analysis
• Mentor and manage engineers and analysts in executing their normal responsibilities
• Deliver software development projects to specification, within scheduled timelines and budget parameters
• Use AWS DevOps and CI/CD best practices to automate deployments using terraform, and manage data pipelines and infrastructure

Skills and experience

• Bachelor’s degree required from an accredited, not-for-profit, in-person college/university
• Commitment track record with prior employers
• 3+ years of hands-on experience in software development delivering high-quality solutions
• Strong data engineering foundation with Python, PySpark, and SQL
• Solid understanding of Object-Oriented Programming principles and best practices
• Proven success building and launching data-driven products operating at terabyte scale
• Demonstrated experience designing and implementing enterprise-level secure and accurate data platforms
• Ability to translate technical requirements into robust architecture, data models, and ETL strategies
• Practical experience with cloud-based databases for both relational and non-relational systems
• Knowledge of BI software such as Power BI or similar tools
• Understanding of AI technologies and hands-on experience leveraging AI tooling in development, including Claude Code, GitHub Copilot, Cursor, Gemini, and Grok
• Ability to retrieve, synthesize, and present critical data in structures useful for answering ad-hoc questions
• Hands-on experience with optimization, data quality checks, data accuracy, and query performance improvement

Technologies you’ll work with

• Databricks, Snowflake, BigQuery
• Medallion Architecture
• Spark, Databricks ML, AWS ML
• Python, PySpark, SQL
• Power BI
• Claude Code, GitHub Copilot, Cursor, Gemini, Grok
• AWS, terraform, CI/CD
• Object-Oriented Programming

Benefits

• 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