Senior Software Engineer ()

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 worldu2019s 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 u2013 and weu2019re 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 weu2019re building a brand on the cusp of defining the industry. Weu2019re 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 (. 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. Youu2019ll help develop the next generation of residential products, apps, and services. Youu2019ll 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 u2013 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 designprinciples and software design patterns to attain high reusability and maintainability + Promote consistent architecture patterns for design and development within and acrossHomesdevelopment 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 CoStaru2019s technology platform and development practices. Basic Qualifications + Bacheloru2019s Degree required 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 (or .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 Whatu2019s in it for You When you join CoStar Group, youu2019ll 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): u00b7 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 Groupu2019s 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 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 worldu2019s 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 37 years, giving us the perspective to create truly unique and valuable products and services. Weu2019ve continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry and for 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. CoStar is committed to creating a diverse environment and is proud to be an equal opportunity workplace and affirmative action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. CoStar is also committed to compliance with all fair employment practices regarding citizenship and immigration status. If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access as a result of your disability. You can request reasonable accommodations by calling 1-855-840-1715 or by sending an email to .

Created: 2025-12-05