Senior Software Engineer - San Diego
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CoStar Realty Information Inc. seeks Senior Software Engineer in San Diego, CA
Job Duties: Drive software designs, development standards, and code reviews. Produce maintainable code that is robust and efficient. Evaluate emerging technologies to identify opportunities, trends, and best practices that can be leveraged to strengthen CoStar’s technology platform and develop practices. Develop API-driven systems for large amounts of users. Collaborate with cross-functional teams—including product managers, data engineers, machine learning engineers and QA engineers—to deliver high-quality software that meets customer and business needs.
Minimum Requirements: Bachelor’s degree, or foreign equivalent, in Computer Science, Information Technology, or a related field plus five years of experience in Software Engineer or related occupation.
Special Skill Requirements: 5 years of progressively responsible experience with C#, .NET Framework, JSON, SQL Server, and AWS including cross-platform communication technologies such as Web API. Experience must include at minimum: 5 years of experience with of database design, T-SQL programming, and performance tuning; 5 years of experience with cloud based technologies; 5 years of experience with design and develop using Object Oriented design principles and software design patterns to attain high reusability and maintainability; 5 years of experience with application performance testing and unit testing strategies and implementation; 5 years of experience with software development and engineering skills on large-scale, mission-critical infrastructure applications; 3 years of experience with HTTP concepts; and 2 years of experience with python code writing and maintenance
Salary: $184,974.00 - $194,974.00 per annum. 40 hours per week; M-F, 9:00 a.m. to 5:00 p.m.
Must be legally authorized to work in the U.S. without sponsorship.
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CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing
CoStar Group (NASDAQ: CSGP) is a global leader in commercial real estate information, analytics, online marketplaces, and 3D digital twin technology. Founded in 1986, CoStar Group is dedicated to digitizing the world’s real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives.
CoStar Group’s major brands include CoStar, a leading global provider of commercial real estate data, analytics, and news; LoopNet, the most trafficked commercial real estate marketplace; Apartments.com, the leading platform for apartment rentals; Homes.com, the fastest-growing residential real estate marketplace; and Domain, one of Australia’s leading property marketplaces. CoStar Group’s industry-leading brands also include Matterport, a leading spatial data company whose platform turns buildings into data to make every space more valuable and accessible, STR, a global leader in hospitality data and benchmarking; Ten-X, an online platform for commercial real estate auctions and negotiated bids; and OnTheMarket, a leading residential property portal in the United Kingdom.
CoStar Group’s websites attracted over 143 million average monthly unique visitors in the third quarter of 2025, serving clients around the world. Headquartered in Arlington, Virginia, CoStar Group is committed to transforming the real estate industry through innovative technology and comprehensive market intelligence. From time to time, we plan to utilize our corporate website as a channel of distribution for material company information. For more information, visit CoStarGroup.com.
