Software Engineer; API​/C#​/Database

- Software Engineer (API/C#/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.

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.

is the nation’s #1 rental marketplace for owners, property managers and consumers.  is the network that millions of renters every year rely on to find their new place, is continuing to grow our industry-leading sales force. We provide apartment Property Managers and Owners with a platform to market their property listings and the industry’s most comprehensive virtual tools to attract the most and highest-quality renters.

The  Network includes , , , , and eight other leading rental sites. Our suite of services includes digital advertising, social and reputation management, and market analytic solutions which delivers innovative tools for our customers.

Learn more about

Our team is seeking an accomplished Software Engineer to join our team in supporting multiple software products and brands across the organization. You will have a direct impact on highly visible  web applications that touch millions of users. You continuously learn emerging technologies and architecture advancements and apply the learnings to improve Apartments’ software products.

This position is located in Irvine, CA and offers 4 days a week onsite with 1 day work from home.

• 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#
• Optimize API performance through caching mechanisms, data pagination, request/response compression, and other performance enhancement techniques.
• Effectively troubleshoot API-related issues, debugging problems, and provide efficient solutions.
• 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)
• Hands‑on API design and development using RESTful or SOAP APIs. Familiar with API best practices, versioning, authentication, and security considerations.
• Proficiency in API Frameworks and Tools such as Swagger, Postman, or similar tools for API development, documentation, and testing
• Experience in SQL or No
  
  SQL databases and be capable of efficiently write stored procedures, functions and ad‑hoc queries to manipulate data through APIs.
• A demonstrable track record of building and launching…