Senior Software Engineer ()

CoStar Group
Arlington, TX

Senior Software Engineer ()

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 worlds real estate empowering all people to discover properties insights and connections that improve their businesses and lives.

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 . After its acquisition in 2014 quickly turned into the most popular place to find a place. Proven success at the highest level and were doing it again with the new . 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 were building a brand on the cusp of defining the industry. Were 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 .

Were 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. Youll help develop the next generation of residential products apps and services. Youll gain experience in many different areas and have the opportunity to make a real impact on the company and real estate industry.

This position is located in Arlington VA and is in office Monday Thursday and work from home on Friday.

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 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 CoStars technology platform and development practices.

Basic Qualifications

  • Bachelors Degree from an accredited not for profit in person university or college (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 ( Core ) and/or Java

  • 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

Whats in it for You

When you join CoStar Group youll 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 Groups 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-AR

#

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

Required Experience:

Senior IC

Posted 2025-11-21

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