LoopNet - Senior Software Engineer (C#/.NET)

Responsibilities

• Design and develop enterprise applications using software design principles/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 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 peer .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.

Requirements

• Bachelor’s degree required from an accredited, not-for-profit university or college.
• A track record of commitment to prior employers with 7+ years of production development experience with .NET or .NET Core.
• Working experience with AWS cloud technologies (file storage, data storage, search, cache), Apache Kafka.
• Frontend working knowledge (Vue, React or Angular, and TypeScript).
• A demonstrable track record of building and launching enterprise products/platforms.
• Experience in relational database design (MS SQL or MySQL) including performance optimization and NoSQL design.
• Application security knowledge.
• Leverage AI Coding Tools for development, refactoring, and debugging (Claude Code, GitHub Copilot or equivalent).

Qualifications

• Experience with Git-based workflows.
• Deeply understand enterprise application business logic.