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CoStar Group, Inc. is hiring: Senior Software Engineer - UI in Arlington

CoStar Group, Inc.
Arlington, VA Full Time
POSTED ON 2/17/2025
AVAILABLE BEFORE 4/29/2025

Senior Software Engineer - UI

Job Description

Overview

CoStar Group (NASDAQ : CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index and the NASDAQ 100, CoStar Group is on a mission to digitize the world’s real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. We have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers.

This is how we deliver for our customers, our employees, and investors. By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate.

As a CoStar Senior Software Engineer on the Platform Development team, you will play a key role in expanding the data platform that supports all of CoStar Group’s largest brands including CoStar Suite, LoopNet, and Apartments.com. You will deeply understand what drives the business for which you are building software.

Responsibilities

  • Build big, distributed, API-driven systems for tens of thousands of users.
  • Produce bullet-proof code that is robust, efficient, and maintainable; our primary tools are C#, .NET Framework, SQL Server, AWS.
  • Drive and lead software design, development standards, and code reviews.
  • Continually evaluate emerging technologies to identify opportunities, trends, and best practices that can be leveraged to strengthen CoStar’s technology platform.

Basic Qualifications

  • Bachelor’s Degree.
  • A track record of commitment to prior employers.
  • 5 years of deep .NET development (C#) experience including cross-platform communication technologies such as Web API.
  • 5 years of experience with JavaScript frameworks such as React or Angular.
  • Working knowledge and experience with cloud-based platforms (AWS or Azure).
  • Experience with RESTful web services and ASP.NET MVC.
  • Experience in architecting, designing, and building large-scale distributed, services-oriented systems and web applications in an agile environment.
  • Data modeling experience.
  • Preferred Qualifications And Skills

  • Strong communication skills (to both business and technical partners).
  • SQL and database development knowledge.
  • Familiarity with AWS PaaS services such as Lambda, DynamoDB, and SQS.
  • Data modeling experience from conceptual, logical, and physical designs.
  • What’s in it for You

    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. We offer you generous compensation and performance-based incentives. CoStar Group also invests in your professional and academic growth with internal training, tuition reimbursement, and an inter-office exchange program.

    Benefits Package Includes

  • 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 Diversity, Equity, & Inclusion Employee Resource Groups.
  • Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks.
  • We welcome all qualified candidates who are currently eligible to work full-time in the United States to apply. However, please note that CoStar Group is not able to provide visa sponsorship for this position.

    LI-CH1

    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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