Software Engineer ; C#​/.NET​/Database

- Software Engineer I (C#/.NET/Database) 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.

• 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, Peloton, 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

This position offers a base salary range of $103,000 to $154,000, based on relevant skills and experience, and includes a generous benefits plan.

• Design and develop using Object Oriented design principles and software design patterns to attain high reusability and maintainability.
• Deep knowledge and experience in writing unit testable software with C#.
• Develop an in-depth understanding of CoStar’s product architecture and frameworks.
• Maintain and contribute to CoStar’s product platform as necessary.
• Develop database stored procedures and SQL scripts/ETL jobs that meet CoStar database standards to implement product requirements.
• Participate and drive continuous improvement within CoStar’s Agile/Scrum teams.
• Build consensus among different teams working on software development projects.
• Facilitate discussions among other .NET and database developers to exchange new ideas and improvements.
• Continually evaluate emerging technologies to identify opportunities, trends and best practices that can be used to strengthen CoStar’s technology platform and development practices.

• Bachelor’s Degree required from an accredited, not-for-profit, in-person college/university.
• A track record of commitment to prior employers.
• 2+ years of production development experience with C# .Net (or .Net Core).
• 2+ years of experience in relational database design (MS SQL or MySQL) including performance tuning.
• A demonstrable track record of building and launching successful products and platforms.
• Deliver products that meet specifications and performance SLA.
• Experienced in unit, performance, and automation testing.
• Deeply understand what drives the business for which you are building software.

• Demonstrate working knowledge Vue, React or Angular in Type Script.
• Experience with AWS S3, SQS, Dynamo, Elasti Cache, Apache Kafka and Datadog.

We welcome all qualified candidates who are currently eligible to work full‑time in the United States to apply. However, 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.

If you are a qualified individual with a disability or a disabled veteran, you may request reasonable accommodation if you are unable or limited in your ability to use or access  as a result of your disability. You can request reasonable accommodations by calling or by sending an email to