Software Engineer II, Data Management

Overview

CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real‑estate information, analytics, and online marketplaces. As a Software Engineer on the Data Automation team, you will play a key role in expanding the data platform that supports CoStar’s largest brands, including CoStar Suite, Loop Net, and

• Build large, distributed, API‑driven systems used by tens of thousands of users.
• Produce robust, efficient, and maintainable code with React JS, C#, .NET Framework, AWS (DynamoDB, S3, Lambda), and SQL Server.
• Lead software design, development standards, and code reviews.
• Continuously evaluate emerging technologies to strengthen CoStar’s platform and develop best practices.

• Bachelor’s Degree from an accredited university or college.
• 4+ years of experience with React JS and JavaScript.
• 4+ years of experience with C# and .NET Framework & Web API 2.0 development.
• 3+ years of experience with MS SQL Server or database design in T‑SQL or PostgreSQL (programming/performance tuning).
• Experience architecting, designing, and building large‑scale, distributed, services‑oriented systems in an agile environment.
• Understanding of AI technologies and hands‑on experience with AI tooling such as Claude Code, Git Hub Copilot, Cursor, Gemini, or Grok.
• Data modeling experience.
• Commitment to prior employers.

• Strong communication skills with both business and technical partners.
• Knowledge of cloud platforms (Azure or AWS).
• Advanced SQL querying.
• Experience with RESTful web services.
• Experience leveraging machine‑learning technologies in production (Azure Machine Learning, AWS Sage Maker, etc.).
• Experience implementing LLM technologies into production systems (Azure AI Foundry, AWS Bedrock, etc.).

• Comprehensive healthcare coverage:
  Medical, Vision, Dental, Prescription Drug.
• Life, legal, and supplementary insurance.
• Virtual and in‑person mental health counseling services.
• 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.
• Access to Employee Resource Groups.
• Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and healthy snacks.

Base compensation: $108,000 - $140,000 annually, based on geography, skills, and competencies.

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