Demo

Senior Database Engineer (SQL)

CoStar Group
Arlington, VA Full Time
POSTED ON 12/27/2025
AVAILABLE BEFORE 1/26/2026
Overview

Job Description

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.

As a Senior Database Developer, you will be responsible for architecting and building data solutions that operate on terabytes of data and scale to support the internal processes of our company and process over a billion dollars of revenue per year.

This position is located in Arlington, VA and is in office Monday through Thursday, and work from home on Friday.

Responsibilities

  • Deeply understand what drives the business for which you are building software
  • Drive the design of highly performant and highly available data solutions
  • Build solutions that operate on massive amounts of data in high-transaction-volume applications
  • Tune database performance using tools like SQL Profiler, Execution Plans
  • Create and maintain Power BI dashboards
  • Maintain documentation for database structures, processes, and best practices
  • Work with QA resources to ensure that the software delivered is of the highest quality
  • Act as a key member of the product launch team and work closely with DevOps to resolve operational issues
  • Evaluate emerging technologies to identify opportunities, trends, and best practices that can be leveraged to strengthen CoStar’s technology platform and development practices.

Basic Qualifications

  • Bachelor’s Degree required from an accredited, not for profit university or college
  • A track record of commitment to prior employers
  • 4 years of SQL database development experience
  • Demonstrable track record of building and launching successful products that leverage terabytes of data
  • Database design, T-SQL programming, performance tuning, index analysis
  • Strong ability to analyze complex data sets and optimize queries
  • Define database architecture and development best practices
  • Experience with version control systems (e.g., TFS)

Preferred Qualifications And Skills

  • Experienced in database performance testing and SQL code unit testing strategies and implementations
  • Experience with NoSQL databases (e.g., ElasticSearch)
  • Familiarity with BI tools (e.g., Power BI)
  • Scripting knowledge (e.g., PowerShell, Python) for automation
  • Knowledge of cloud platforms (e.g., Azure SQL, AWS RDS)
  • Comfortable facilitating discussions among database developers to exchange ideas and introduce new database technologies
  • Strong communication skills (with the business and technical partners)

Whats In It For You

Working at CoStar Group means you'll enjoy a culture of collaboration and innovation that attracts the best and brightest across a broad range of disciplines. In addition to generous compensation and performance-based incentives, you'll be supported in both 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
  • 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, as well as Segways and bikes available for use during the day
  • Complimentary gourmet coffee, tea, hot chocolate, prepared foods, 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 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

Salary.com Estimation for Senior Database Engineer (SQL) in Arlington, VA
$109,823 to $133,937
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