Senior Software Engineer

Company Overview

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, the company 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. With over 35 years of experience, CoStar Group continues to innovate and drive industry standards, providing invaluable edge in real estate through its proprietary CRM system and data platforms.

Our team is responsible for building software in support of CoStar Group's sales teams. We design innovative CRM features that empower our sales teams' success. As a collaborative group with native mobile, data, API/platform, and front-end skills, we drive the company’s future with our proprietary CRM system. We are actively hiring a Senior Software Engineer for our Sales Development team to contribute to AI initiatives within our CRM platform.

This position is located in Richmond, VA with a Monday‑Thursday in‑office schedule and the option to work from home on Fridays.

• Building customer‑facing web applications using React and Type Script.
• Build microservices and RESTful APIs with C# and .NET Core.
• Drive and lead software design, developing standards and performing code reviews to produce robust, maintainable codebases.
• Continuously evaluate emerging technologies to identify opportunities, trends, and best practices for strengthening CoStar’s technology platform.
• Develop comprehensive application testing procedures to ensure high‑quality applications for tens of thousands of users.

• Bachelor’s Degree required from an accredited, not‑for‑profit, in‑person college or university.
• 6+ years of software development experience with OOP languages.
• Demonstrated experience in architecting, designing, and building large‑scale distributed, service‑oriented systems and web applications in an agile environment.
• Experience building RESTful APIs using C#.
• Proficient understanding of code versioning tools such as Git.
• Understanding of AI technologies and hands‑on experience in AI adoption and development.
• Familiarity with CI/CD deployment processes.
• A track record of commitment to prior employers.

• Experience with SQL.
• Familiarity with AWS services and tools, including but not limited to Bedrock.
• Experience with Elasticsearch or Open Search.
• Strong communication skills with both business and technical partners.
• Data modeling experience from conceptual, logical, and physical designs.

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 generous compensation and performance‑based incentives. The company also invests in your professional and academic growth with internal training and tuition reimbursement.

• Comprehensive healthcare coverage:
  Medical, Vision, Dental, Prescription Drug, Life, legal, and supplementary insurance.
• Virtual and in‑person mental health counseling services for individuals and families.
• 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).
• Access to CoStar Group’s Employee Resource Groups.
• Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks.

Base Compensation: $130,000 – $170,000 annually.

CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug‑free workplace and perform pre‑employment substance abuse testing. 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 Group 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 sending an email to re