Software Engineer II - LoopNet

Software Engineer II - Loop Net

Job Description.

• 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 university or college.
• A track record of commitment to prior employers.
• Working knowledge Vue, React or Angular in Type Script
• Experience with AWS S3, SQS, Dynamo, Elasti Cache, Apache Kafka and Datadog
• Leverage AI Coding Tools for development, refactoring, and debugging (Claude Code, Git Hub Copilot or equivalent).
• 5+ 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.
• Deeply understand what drives the business for which you are building software.

• Experience in relational database design (MS SQL or MySQL) including performance tuning.
• Application security knowledge and experience with Git‑based workflows.
• Take an active role in mentoring developers with ability to build consensus.
• Experienced in unit, performance, and automation testing.

• 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 Employee Resource Groups.
• Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks.

This position offers a base salary range of $119,000-$165,000 based on relevant skills and experience and includes a generous benefits plan.

CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug‑free workplace and perform pre‑employment substance abuse testing.