Senior Software Engineer - SQL/C#/.NET

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Job Description

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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.    

You will be part of our finance technology team, tasked with enabling the payment processing functionality of our business. This role is pivotal in constructing new data pipelines and system integrations to ensure our CRM and Consumer Portals offer enhanced customer experience with real-time information and enriched data for millions of transactions, addressing performance and high fault tolerance.  

This position is located in our Richmond, VA office and offers a schedule of Monday-Thursday in office and Friday remote.  

Responsibilities 

• Lead technical discussions and make critical architectural decisions aligned with business goals. 

• Design, develop, and maintain robust and scalable applications using the Microsoft .NET technology stack, SQL and other data tools.

• Implement solutions using modern architecture paradigms including microservices, and event-driven systems. 

• Ensure adherence to SOLID principles, design patterns, and clean coding standards. 

• Collaborate with cross-functional teams, participate in code reviews, and mentor junior developers. 

• Analyze business requirements and translate them into technical designs and development-ready specifications. 

• Working across teams and departments to standardize data transfer and storage

Basic Qualifications 

• Bachelor’s Degree required from an accredited, not for profit university or college. 

• A track record of commitment to prior employers.

• 5+ years of professional experience in software development using strongly typed languages for server-side processing, such as C#, GoLang, Java or Node with Typescript

• Must have strong experience with MS SQL Server, including relational database design and performance tuning. 

• Able to demonstrate experience building highly scalable software systems in both volume processing and performance

• Familiarity with microservices architecture and containerization using Docker and Kubernetes. 

• Experience with AWS or similar cloud platforms (Azure, GCP). 

• Strong understanding of CI/CD principles, infrastructure as code, and automated deployment pipelines and source control systems. Strong analytical and problem-solving skills with attention to detail and excellent communication skills. 

• Experience in unit, performance and automation testing. 

Preferred Qualifications 

• Experience with NoSQL databases and API Gateway technologies. 

• Familiarity with observability tools like Kibana, Data Dog and other monitoring frameworks

• Hands-on experience with Entity Framework for efficient data modeling and data access. 

• Databricks, Python or other ETL processing experience

• Experience with ElasticSearch or OpenSearch

• Payments experience a plus

• Experience with Identity & Access Management, like OAuth, JWT. 

• Exposure to serverless computing and event-driven architecture, including but not limited to RabbitMQ, SQS, Kafka, or Azure Service Bus 

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 (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.  

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