Software Engineer II - Backend

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

Benefits offered by this job

Healthcare coverage

Mental health support

Commuter and parking benefits

401(k) with matching

Employee stock purchase plan

Paid time off

Tuition reimbursement

On-site fitness center / gym access

Employee Resource Groups

Snacks and beverages

Job summary

CoStar Group in Richmond, VA is seeking a Software Engineer II to help build the next generation of backend services, APIs and integrations within the finance tech org. You’ll work on moving data between external platforms and our enterprise system, enabling configurable, reusable services and enhancing payments data visibility.

The role emphasizes collaboration across teams, design patterns, and modern data tooling, with in-office Mon-Thu and Fri from home flexibility.

Qualifications

• Bachelor's degree required in-person from an accredited institution.
• 3+ years of professional experience in server-side software development with strongly typed languages.
• Experience with relational databases and query optimization.
• Experience building scalable APIs and integrations across REST APIs and messaging/event systems.
• Ability to design configurable, reusable frameworks for multiple integrations.
• Strong CI/CD, IaC, automated deployments and source control knowledge.
• Strong analytical, problem-solving and communication skills.
• Experience using AI-assisted development tools to accelerate delivery.

Responsibilities

• Contribute to technical discussions and architectural decisions aligned with business goals.
• Design, develop, and maintain robust backend apps and APIs using .NET, SQL and related data tools.
• Promote maintainable, well-tested code with clear separation of concerns and design patterns.
• Collaborate with engineering, product, DevOps and DBA teams to deliver production systems and participate in code reviews.
• Translate requirements into technical designs and development-ready specifications.

Skills

C#

GoLang

Java

Node with TS

REST APIs

SQL

Education

Bachelor's degree

Tools

RabbitMQ

SQS

Kafka

Azure Service Bus

Docker

Kubernetes

Datadog

Kibana

Elasticsearch/OpenSearch

Job description

Software Engineer II - Backend

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’sreal 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 perfectedour 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.

Role Description

We are seeking a Software Engineer II to join a new team building the next generation of back-end services, APIs and integrations in the finance tech organization. Initially this role will focus on the systems that move financial data between external platforms and our enterprise contracting system, integrating with existing APIs, message queues and SQL databases. You will help build configurable, reusable services that can be extended to new sources, systems and acquisitions through configuration rather than one-off, hard-coded integrations. You will also help standardize how data moves across our billing systems to allow for greater visibility into patterns, errors and optimizations across a payments flow of billions of dollars a year. This position is in Richmond, VA and has a work schedule of Monday through Thursday in office and Friday work from home.

Responsibilities

• Contribute to technical discussions and architectural decisions aligned with business goals
• Design, develop, and maintain robust and scalable back-end applications and APIs using the Microsoft .NET technology stack, SQL and other data tools
• Champion maintainable, well-tested code and sound design: clear separation of concerns, loose coupling, and consistent use of established design patterns
• Collaborate with engineering, product, DevOps and DBA teams to deliver production systems and participate in code reviews
• Work from requirements through delivery, partnering with senior engineers and business stakeholders to turn business context into technical designs and development-ready specifications

Basic Qualifications

• Bachelor's degree required from an accredited, not-for-profit, in-person college/university
• Track Record of committment to prior employers 3+ years of professional experience in software development using strongly typed languages for server-side processing, such as C#, GoLang, Java or Node with TypeScript
• Strong experience with relational databases, including database design and performance optimization
• Experience building scalable APIs and system integrations across REST APIs, message brokers or event streams
• Experience building configurable, reusable frameworks that support multiple integrations or business processes rather than hard-coded, single-purpose implementations
• Strong understanding of CI/CD principles, infrastructure as code, automated deployment pipelines, and source control systems
• Strong analytical and problem-solving skills, with attention to detail and excellent communication skills
• Experience with agentic engineering and AI-assisted development tools (e.g., Claude Code, GitHub Copilot) to accelerate software delivery

Preferred Qualifications

• Exposure to serverless computing and event-driven architecture, including but not limited to RabbitMQ, SQS, Kafka, or Azure Service Bus
• Familiarity with microservices architecture, containerization (Docker, Kubernetes), and cloud platforms such as AWS, Azure or GCP
• Familiarity with observability tools like Kibana, Datadog and other monitoring frameworks
• Experience with Elasticsearch or OpenSearch, including relevance and index tuning to power fast, accurate search across contract, billing and reference data
• Databricks, Python or other ETL processing experience
• Payments or financial systems experience a plus
• Demonstrated ability to apply AI copilots or agentic workflows for code generation, code review, and root-cause analysis

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.

Benefits

• 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 Employee Resource Groups
• Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks

Compensation

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

Eligibility

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.

Equal Employment Opportunity

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, CoStar Group is on a mission to digitize the world’sreal estate, empowering all people to discover properties, insights and connections that improve their businesses and lives.

CoStar Group 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 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 www.costargroup.com/careers as a result of your disability. You can request reasonable accommodations by sending an email to [e-mail].