Lead Software Engineer- CoStar- Arlington, VA

CoStar Group

📍 Arlington, Virginia, United States 💼 Full time 🕒 Posted June 10, 2026

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Job Description

Responsibilities
Architect scalable, resilient distributed systems — defining service boundaries, data contracts, and cross-team API standards for an enterprise-scale platform 
Build responsive, high-performance applications using React, Node.js, Tailwind, etc.
Work with cloud-native services (Azure/AWS/GCP), containers, and microservices
Optimize for performance, observability, and developer productivity
Leverage AI Tooling & Automation (CI/Cd, code generation, test generation) 
Influence and establish AI-first engineering practice (vibe coding, human-in-the-loop, debugging)
Establish AI Culture & Mentorship (team upskilling, lifecycle redefinition) 
Continually evaluate emerging technologies to identify opportunities, trends and best practices that can be used to strengthen CoStar’s technology platform and development practices 
Develop and maintain an in-depth working knowle...
            

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Job Details

Location Arlington, Virginia
Job Type Full time
Category Computer Occupations
Posted Date June 10, 2026
Application Deadline July 20, 2026