Senior Software Engineer
Core
Design and architect modern web applications and AI-powered software solutions for CoStar's proprietary CRM platform and customer-facing real estate marketplaces.
Role type
Senior Front-end Software Engineer (AI/LLM integration)
Builds
Proprietary CRM platform, web applications, and AI-driven intelligent agents/workflows for CoStar brands (Homes.com, Costar.com, etc.)
Domain
Real Estate Technology / AI & Machine Learning
Deliverable
production ML models | product features
Required skills
React.js, TypeScript, Tailwind CSS, HTML/CSS, JavaScript, RESTful APIs, Unit/Integration Testing, Agile methodologies, LLMs/Prompt Engineering, Agent-based architectures
Preferred skills
Redux/Context API, AI agents/workflow automation, CI/CD pipelines, .NET Core, SQL Server, Node.js, AWS services (S3, Lambda, SQS, Kafka, Redis)
Technologies
React, TypeScript, Tailwind CSS, Jest, React Testing Library, Webpack, Babel, Redux, .NET Core, SQL Server, DynamoDB, Elastic Search, Node.js, AWS, Git
Responsibilities
Develop and maintain high-performance web applications; Design and implement AI-powered software solutions; Build and integrate AI skills, agents, and intelligent workflows; Build reusable UI components and libraries; Collaborate with Product, Research, and Data teams on AI-driven automation; Write comprehensive unit and integration tests; Participate in code reviews, pair programming, and agile ceremonies; Mentor other developers.
Seniority
Senior, hands-on IC
