LoopNet - Senior Full Stack Engineer

Loop Net - Senior Full Stack Engineer

Location:

Irvine, CA. 4 days onsite, 1 day remote.

CoStar Group is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. It is a constituent of the S&P 500 and aims to digitize real estate worldwide.

• 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 university or college.
• A track record of commitment to prior employers.
• Working knowledge of 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).
• 7+ 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.

• Base salary range of $124,000‑$187,000, based on relevant skills and experience.
• Generous compensation and performance‑based incentives.
• Professional and academic growth with internal training and tuition reimbursement.
• 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.
• 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.

When you join CoStar Group, you’ll experience a collaborative and innovative culture working alongside the best and brightest to empower our people and customers to succeed.

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