Senior Software Engineer- CoStar Suite- Arlington, VA

The Opportunity

Join CoStar’s innovation engine to spearhead the creation of a massive, greenfield web application designed from the ground up to be AI-native. As a senior leader, you will move beyond traditional coding to architect resilient distributed systems where human-in-the-loop AI processes and automated code generation are the standard, not the exception.

Tech Stack & Vibe

You will work across a modern stack including React, Node.js, and C# while managing cloud-native services in a multi-cloud environment. This role is specifically designed for developers who leverage AI tooling—like automated test generation and AI-driven debugging—to amplify their output and maintain high-performance, observable codebases.

Leading the AI Revolution

This isn't just about shipping features; it’s about establishing the 'vibe coding' blueprint for the entire organization. You will mentor teams on upskilling with frontier models, building intelligent agents, and redefining the software development lifecycle through the lens of artificial intelligence. It is a high-impact position for those ready to influence how enterprise software is built in the age of AI.