Senior Software Engineer - AI-First, Hybrid Web Platform

CoStar Group; Arlington (VA); Hybrid; USD 124,000 - 187,000; Full time

Benefits offered by this job

Healthcare coverage

401(k) plan with matching

Employee stock purchase plan

Paid time off

Tuition reimbursement

On-site fitness center

Job summary

CoStar Group in Arlington, VA seeks a Senior Software Engineer to build a greenfield enterprise web app infused with AI. You will define scalable systems, drive AI-first engineering, and shape the platform’s future. The role emphasizes modern tech and collaboration across teams.

The position is on-site Monday–Thursday with remote option on Friday, offering strong growth, competitive compensation, and broad responsibilities across the CRE domain.

Qualifications

• Bachelor's degree from an accredited university.
• 5+ years of production development experience in modern technologies (React, Vue, TypeScript, NodeJS, C#, .Net, OpenSearch, Kafka, SQL, NoSQL).
• Experience designing for high availability, horizontal scalability, and production observability at enterprise scale.

Responsibilities

• Architect scalable, resilient distributed systems with clear service boundaries and API standards.
• Build responsive, high-performance applications using React, Node.js, Tailwind, and related tech.
• Work with cloud-native services (Azure/AWS/GCP), containers, and microservices.

Skills

React

TypeScript

NodeJS

C#

.NET

OpenSearch

Kafka

SQL

NoSQL

Education

Bachelor's Degree

Tools

Azure

AWS

GCP

Docker

Kubernetes

Job description

CoStar Group in Arlington, VA seeks a Senior Software Engineer to build a greenfield enterprise web app infused with AI. You will define scalable systems, drive AI-first engineering, and shape the platform’s future. The role emphasizes modern tech and collaboration across teams.

The position is on-site Monday–Thursday with remote option on Friday, offering strong growth, competitive compensation, and broad responsibilities across the CRE domain.