Software Engineer II
About The Position
CoStar Group is seeking a Software Engineer II to design and architect modern web applications for its Web Enterprise team. The team builds software tools for CoStar’s proprietary CRM platform, supporting sales, research, and customer support teams across Homes.com, Costar.com, Apartments.com, LoopNet.com, and other businesses. The role contributes to CoStar’s investment in artificial intelligence, including efforts to accelerate software delivery, improve platform observability, automate research and business workflows, enhance products with intelligent agents and skills, and improve enterprise data quality. The position is based in Richmond, Virginia, with in-office work Monday through Thursday and work from home on Friday.
Requirements
- Bachelor’s degree from an accredited, not-for-profit, in-person university or college.
- At least 3 years of experience designing, building, deploying, and supporting production-grade software applications.
- Experience developing full-stack applications with modern web technologies such as React, TypeScript, C#, .NET, SQL Server, AWS, or comparable technologies.
- Familiarity with building or integrating AI-powered applications, including AI agents, LLM-powered workflows, chatbots, copilots, or agent-based systems.
- Software engineering fundamentals across application architecture, testing, security, performance, and modern development practices.
- Experience collaborating across engineering, product, and business teams in an agile environment.
- Track record of commitment to prior employers.
Nice To Haves
- Experience building and deploying agentic AI solutions that reason, plan, make decisions, interact with tools, and automate complex business workflows.
- Experience with retrieval-augmented generation (RAG), prompt engineering, tool-calling frameworks, AI evaluation, or orchestration platforms.
- Experience developing distributed systems or cloud-native applications on AWS or a comparable cloud platform.
- Familiarity with Kafka, Redis, Elasticsearch, DynamoDB, S3, Lambda, or similar scalable data and messaging technologies.
Responsibilities
- Design, develop, and maintain scalable full-stack applications, APIs, and cloud-native services for customer and business workflows.
- Contribute to AI-powered products, intelligent agents, and automation capabilities that improve user experiences and productivity.
- Develop modern AI solutions, including LLM-powered workflows, retrieval systems, and intelligent decision-making tools for customer-facing and internal applications.
- Collaborate with Product, Data Science, and Engineering teams to identify opportunities for AI and automation to create measurable business impact and operational efficiency.
- Deliver secure, high-performance, maintainable software using automated testing, CI/CD, code reviews, and observability.
- Evaluate emerging technologies, AI frameworks, and industry trends to strengthen CoStar’s technology ecosystem and accelerate innovation.
Benefits
- Comprehensive medical, vision, dental, and prescription drug coverage.
- 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, depending on location; facilities and offerings may include a yoga studio, Pelotons, personal training, and group exercise classes.
- Access to CoStar Group’s Employee Resource Groups.
- Complimentary gourmet coffee, tea, hot chocolate, fresh fruit, and other healthy snacks.
- Generous compensation and performance-based incentives.
- Internal training and support for professional and academic growth.
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
