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 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. We’ve continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation. 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. **RESPONSIBILITIES** + Know: Deeply understand what drives the business for which you are building software. We firmly believe that what separates a good developer from a great one is a deep understanding of the business that they are supporting. + Architect: Use your experience to drive the design of highly performant and highly available products and platforms. + Build: Build solutions that operate on massive amounts of data in high transaction volume applications. + Test: Work with your QA resources to ensure that the software you deliver is of the highest quality. (Our customers are not beta testers.) + Launch: Act as a key member of the product launch team and work closely to DevOps to resolve operational issues. + Grow: Take an active role in mentoring other developers. **BASIC QUALIFICATIONS** + A demonstrable track record of building and launching successful products and/or platforms that leverage terabytes of data and scale to meet the needs of millions of users + 5+ years of deep _(really deep)_ .NET development (C#) development experience including cross platform communication technologies such as Web API or WCF + 5+ years of database design, T-SQL programming and performance tuning experience + Ability to design and develop using Object Oriented design principles and software design patterns to attain high reusability and maintainability + Bachelor’s Degree required from an accredited, not for profit university or college. + A track record of commitment to prior employers **PREFERRED QUALIFICATIONS AND SKILLS** + Deliver work products that meet specifications, are defect free and performant + Experienced in application performance testing and unit testing strategies and implementation + Facilitate discussions among other developers to exchange ideas and introduce new technologies. Ability to build consensus among other technologist. + Evaluate emerging technologies to identify opportunities, trends and best practices that can be leveraged to strengthen CoStar’s technology platform and development practices. + Willingness to take an active role in mentoring other developers **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. 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. _This position offers a base salary range of $124,000 - $201,700 based on relevant skills and experience and includes a generous benefits plan._ \#LI-CH1 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 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 37 years, giving us the perspective to create truly unique and valuable products and services. We’ve 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 www.costargroup.com/careers as a result of your disability. You can request reasonable accommodations by calling 1-855-840-1715 or by sending an email to recruiting@costargroup.com .