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CoStar Group
·
October 30, 2025
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Apartments.com - Software Engineer (C#/.NET/Database))

Orange County - CA
Full-time
Hybrid
$10K/yr - $154K/yr
Entry, Mid Level
CoStar Group is a leading global provider of commercial and residential real estate information and analytics. They are seeking a Software Engineer to support multiple software products and brands, focusing on enhancing Apartments.com web applications that reach millions of users.
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Responsibilities

  • 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.

Qualification

Required

  • Bachelor’s Degree required from an accredited, not-for-profit university or college
  • A track record of commitment to prior employers
  • 2+ years of production development experience with C# .Net (or .Net Core)
  • 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
  • Take an active role in mentoring developers with ability to build consensus

Preferred

  • Demonstrate working knowledge Vue, React or Angular in TypeScript
  • Experience in relational database design (MS SQL or MySQL) including performance tuning
  • Experience with AWS S3, SQS, Dynamo, ElastiCache, Apache Kafka and Datadog

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
CoStar Group (NASDAQ: CSGP) is the provider of commercial real estate information, analytics and marketing services.
Glassdoor
2.9
Founded in 1987
Arlington, Virginia, USA
5001-10000 employees
http://www.costargroup.com/