Software Engineer II

CoStar Group is hiring a Software Engineer II for its Web Enterprise team. The role builds and maintains applications, APIs, and cloud services that support its CRM platform and business workflows, while contributing to AI-powered products and automation.

Responsibilities

Design, develop, and maintain scalable full-stack applications, APIs, and cloud-native services that power critical customer and business workflows

Contribute to AI-powered products, intelligent agents, and automation capabilities that enhance user experiences, increase productivity, and unlock new platform capabilities

Work on modern AI solutions, including LLM-powered workflows, retrieval systems, and intelligent decision-making tools across customer-facing and internal applications

Collaborate with Product, Data Science, and Engineering teams to identify opportunities where AI and automation can drive measurable business impact and operational efficiency

Deliver secure, high-performance, and maintainable software through modern engineering practices, including automated testing, CI/CD, code reviews, and observability

Continuously evaluate emerging technologies, AI frameworks, and industry trends to strengthen CoStar's technology ecosystem and accelerate innovation

Preferred

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

Agentic AI Development

AI Solution Deployment

AI Reasoning

AI Planning

AI Decision-Making

AI Tool Interaction

Workflow Automation

Retrieval-Augmented Generation

Prompt Engineering

Tool-Calling Frameworks

AI Evaluation

AI Orchestration Platforms

Distributed Systems

Cloud-Native Application Development

Cloud Platforms

Kafka

Redis

Elasticsearch

DynamoDB

Amazon S3

AWS Lambda

Scalable Data Technologies

Messaging Technologies

Benefits

In office Monday through Thursday with work from home on Friday

Performance-based incentives

Internal training

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 family

Commuter and parking benefits

401(K) retirement plan with matching contributions

Employee stock purchase plan

Paid time off

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

Company

Real estate portal for homes, apartments, and land listings

Richmond, Virginia, USA

https://www.homes.com/

Founded in 1997

501-1000 employees

Qualifications

Bachelor's degree from an accredited, not-for-profit, in-person university or college

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

currently eligible to work full-time in the United States

CoStar Group is not able to provide visa sponsorship for this position

Currently eligible to work full-time in the United States

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

3+ years of experience designing, building, deploying, and supporting production-grade software applications.

Required skills

React, TypeScript, C#, .NET, SQL Server, AWS, AI Agent Development, LLM-Powered Workflows, Retrieval-Augmented Generation (RAG), Prompt Engineering, Distributed Systems, Kafka

Experience

3+ years