Senior Software Engineer (C#/.NET)
Core
Build big, distributed, API-driven systems and AI-powered software solutions for CoStar Group's real estate platforms (CoStar Suite, LoopNet, Homes.com, Apartments.com).
Role type
Senior Software Engineer (C#/.NET) with AI integration focus.
Builds
Distributed systems, AI agents, intelligent workflows, and observability tools for enterprise real estate data platforms.
Domain
Real Estate Technology / Cloud Infrastructure
Deliverable
production ML models
Required skills
C#, .NET Framework, SQL Server, AWS, RESTful web services, ASP.NET MVC, Data modeling, LLMs, Prompt engineering, Telemetry/Observability
Preferred skills
AWS PaaS (Lambda, DynamoDB, SQS), AI agent implementation, AI-assisted development practices
Technologies
C#, .NET, SQL Server, AWS, ASP.NET MVC, LLMs
Responsibilities
Design and implement AI-powered software solutions; Build and integrate AI skills, agents, and intelligent workflows; Produce robust, efficient code using C# and .NET; Utilize AI models to enhance monitoring and observability; Implement telemetry-driven solutions for anomaly detection; Lead software design and code reviews; Collaborate with Product and Data teams on AI automation opportunities.
Seniority
Senior, hands-on IC
