LoopNet - Senior Full Stack Engineer

LoopNet - Senior Full Stack Engineer

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

About the Company

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.

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.

Required Qualifications

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 TypeScript.

Experience with AWS S3, SQS, Dynamo, ElastiCache, Apache Kafka and Datadog.

Leverage AI coding tools for development, refactoring, and debugging (Claude Code, GitHub 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.

Preferred Qualifications

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.

Benefits

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.

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