Lead Software Developer

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.

Responsibilities

• 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.
• Hands-on involvement in design, architecture, and development activities in the creation of applications ranging the entirety of the Research Process
• Work on big, distributed, API-driven systems that operate on massive amounts of data in high transaction volume applications for tens of thousands of users, while producing bullet-proof code that is robust, efficient, and maintainable; our primary tools are C#, .NET Framework, Python, JSON, SQL Server, AWS and Databricks.
• Collaborate with your QA resources to ensure that the software you deliver is of the highest quality. (Our customers are not beta testers.)
• Act as a key member of the product launch team and work closely to DevOps to resolve operational issues.
• Deliver work products that meet specifications, are free of defects, and have optimal performance.
• Take an active role in mentoring other developers

• Bachelor’s Degree or equivalent experience.
• A track record of commitment to prior employers.
• 5+ years of .NET development (C#) development experience including cross-platform communication technologies such as Web API.
• 3+ years of experience with SQL Server, writing SQL queries, data matching/cleansing/enriching as well as ETL/data pipeline engineering.
• A demonstrable track record of building and launching successful products that leverage terabytes of data.
• Ability to analyse technical requirements and design new architectures, data models, and ETL strategies.
• Expertise in database design, complex T-SQL programming, performance tuning, and index analysis.
• Hands-on experience with cloud-based relational and non-relational databases.
• Facilitate discussions among developers to exchange ideas and introduce innovative technologies.
• Evaluate emerging technologies to identify opportunities, trends, and best practices that can be leveraged to strengthen CoStar’s technology platform and development practices.
• Experience with .NET Core., Python, Jupyter, Notebook, AWS and NoSQL databases.
• Experience with Databricks and Lakehouse architecture