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Homes.com - Senior Software Engineer (C#/.NET)

Homes.com
Arlington, VA Full Time
POSTED ON 4/17/2026
AVAILABLE BEFORE 5/16/2026
Job Description

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.

Homes.com is already one of the fastest growing real estate portals in the industry, we are driven to be #1. Just ask Brad Bellflower, Chief Change Officer at Apartments.com. After its acquisition in 2014, Apartments.com quickly turned into the most popular place to find a place. Proven success at the highest level – and we’re doing it again with the new Homes.com. Homes.com is a CoStar Group company with 20 years' experience in leading and growing digital marketplaces. We pride ourselves on continually improving, innovating, and setting the standard for property search and marketing experiences. With Homes.com we’re building a brand on the cusp of defining the industry. We’re looking for big thinkers, brave leaders, and creative advertising wizards ready to influence a new age of homebuying within a tried-and-true, award-winning company.

Learn more about Homes.com.

We're looking for an object-oriented Senior Software Engineer who takes pride in backend development to contribute to building innovative, scalable applications in pursuit of a great user experience. You’ll help develop the next generation of residential products, apps, and services. You’ll gain experience in many different areas and have the opportunity to make a real impact to the company and real estate industry.

This position is located in Arlington, VA with a 4 day onsite (Monday-Thursday) and 1-day work-from-home schedule.

Responsibilities

  • Design and develop high performance web applications used by hundreds of thousands of users globally
  • Design and develop using Object Oriented design principles and software design patterns to attain high reusability and maintainability
  • Promote consistent architecture patterns for design and development within and across Homes development teams
  • Collaborate closely with other Software Engineers across the organization.
  • Advocate standards-driven technology
  • 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.

Basic Qualifications

  • Bachelor's degree required from an accredited, not-for-profit, in-person college/university

(preferably in Computer Science, Engineering or a related field)

  • A track record of commitment to prior employers
  • 5 years of production development experience with C#, .NET (or .NET Core) and/or Python
  • Experience delivering products that meet specifications and performance SLA
  • Experienced in unit, performance, and automation testing
  • Deeply understand what drives the business for which you are building software

Preferred Qualifications And Skills

  • Experience in relational database design (AWS RDS, MS SQL) including performance tuning
  • Experience with AWS S3, Step Functions, Lambda, SQS, Dynamo, ElastiCache, Apache Kafka and Datadog
  • A demonstrable track record of building and launching successful products and platforms

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, and tuition reimbursement.

Our Benefits Package Includes (but Is Not Limited To)

  • 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.

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

#Homes.com

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

Salary.com Estimation for Homes.com - Senior Software Engineer (C#/.NET) in Arlington, VA
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