Software Engineer II, Data Management

CoStar Group; Richmond (VA); Hybrid; USD 108,000 - 140,000; Full time

Benefits offered by this job

Healthcare

Life insurance

Mental health support

Parking

401K

Stock purchase plan

Paid time off

Tuition reimbursement

On-site fitness

Job summary

CoStar Group in the United States is seeking a Software Engineer for the Data Automation team in Richmond, VA. You will build distributed, API-driven systems used by thousands of users and work with React JS, C#, .NET, AWS, and SQL Server.

The role emphasizes understanding the business, leading design and standards, and evaluating new technologies. The position offers in-office Monday-Thursday with remote Fridays and a strong benefits package.

Qualifications

• Bachelor’s degree from an accredited, in-person university or college.
• 4+ years of experience in React JS, JavaScript.
• 4+ years of experience in C#, .NET Framework & Web API 2.0 Development.
• 3+ years of experience in MS SQL Server or PostgreSQL design/performance tuning.
• Experience in architecting large-scale distributed systems in agile environments.
• Understanding of AI technologies and hands-on tooling experience (e.g., Claude Code, Copilot).
• Data modeling experience.
• Track record of commitment to prior employers.

Responsibilities

• Build big, distributed, API-driven systems for thousands of users.
• Produce robust, maintainable code using React JS, C#, .NET, AWS, SQL Server.
• Drive and lead software design, development standards, code reviews.
• Evaluate emerging technologies to strengthen CoStar’s technology platform.

Skills

React JS

JavaScript

C#

.NET Framework

Web API 2.0

MS SQL Server

PostgreSQL

Distributed systems

AI tooling

Data modeling

Commitment

Education

Bachelor’s Degree from an accredited, not for profit, in person university or college

Tools

AWS

Azure

RESTful web services

LLM integration

Job description

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, 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 customer, 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 Software Engineer on the Data Automation 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 Homes.com. You will 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.

Position is located in Richmond, VA and offers a schedule of Monday to Thursday in office and the option to work from home on Friday.

Responsibilities

• Build big, distributed, API-driven systems for tens of thousands of users
• Produce bullet‑proof code that is robust, efficient, and maintainable; our primary tools are React JS, C#, .NET Framework, AWS (Dynamo/S3/Lambda), SQL Server
• Drive and lead software design, development standards, code reviews
• Continually evaluate emerging technologies to identify opportunities, trends, and best practices that can be leveraged to strengthen CoStar’s technology platform and develop practices

Qualifications

• Bachelor’s Degree from an accredited, not for profit, in person university or college
• 4+ years of experience in React JS, JavaScript
• 4+ years of experience in C#, .NET Framework & Web API 2.0 Development
• 3+ years of experience in MS SQL Server OR Database Design in T‑SQL or PostgreSQL programming/performance tuning
• Experience in architecting, designing and building large-scale distributed, services-oriented systems and web applications in an agile environment
• Understanding of AI technologies and hands‑on experience leveraging AI tooling in development (Claude Code, GitHub Copilot, Cursor, Gemini, Grok)
• Data modeling experience
• Track record of commitment to prior employers

Preferred Qualifications

• Strong communication skills (to both business and technical partners)
• Knowledge of cloud platforms (Azure or AWS)
• Advanced SQL Querying
• Data modeling experience from conceptual, logical and physical designs
• Experience with RESTful web services
• Experience leveraging ML technologies in production systems (Azure Machine Learning, AWS SageMaker, etc.)
• Experience implementing LLM technologies into production systems (Azure AI Foundry, AWS Bedrock, etc.)

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 and tuition reimbursement.

Our Benefits Package Includes

• 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)
• Access to CoStar Group’s Employee Resource Groups
• Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks

Base Compensation: $108,000 - $140,000 annually

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.

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