Senior Software Engineer

CoStar Group

Hybrid

Quick summary

Work type: Hybrid
Location: Irvine, CA
Salary: $124,000–$187,000 / yr
Posted: 2 days ago
Nearby: 99+ roles within 25 mi

Market check

Salary context

Below market

How this pay compares to similar roles

Similar $180k

This role $156k

$106k most similar roles pay here $248k

This role pays less than 76% of similar roles. Most pay $157,137–$203,454 — the shaded band above. At the midpoint, this role pays about $156k versus about $180k for comparable roles.

Based on 240 similar postings.

Employer

About CoStar Group

CoStar Group is the leading provider of commercial real estate information, analytics, and online marketplaces, including CoStar, Apartments.com, and LoopNet platforms. Industry: Commercial Real Estate Data & Analytics

CoStar Group currently has 41 open roles on FindRole.

Listed pay typically runs $144,000–$202,000 across 21 roles with salary data.

Most-posted roles

View all roles at CoStar Group

At a glance

TL;DR · Senior Software Engineer

Role Posting Log in to save

As a Senior Software Engineer at LoopNet, the premier global commercial real estate marketplace with over 12 million monthly visitors, you will join a dynamic team in Irvine, CA to build scalable systems across multiple products using C#, .NET, and AWS. Your day-to-day responsibilities include leveraging AI coding tools like Claude Code or GitHub Copilot to enhance development practices, contributing to architecture decisions, and mentoring junior engineers. You will work on high-quality backend systems, APIs, and performance-tuned databases while ensuring adherence to specifications and SLAs. Preferred qualifications include experience with Vue.js/React in TypeScript, microservices, Docker, Kubernetes, CI/CD pipelines, and cloud data warehouses like BigQuery or Snowflake.

Skills

C# .NET AWS Vue.js React TypeScript MS SQL MySQL S3 SQS DynamoDB ElastiCache Apache Kafka Datadog Docker Kubernetes CI/CD DevOps Git Python BigQuery Databricks Snowflake

What you'll do

Design and implement scalable backend systems using C#/.NET for LoopNet’s platforms.
Mentor junior engineers and contribute to architectural decisions within the team.
Enhance product quality through the integration of AI coding tools like GitHub Copilot.
Develop APIs and ensure they meet performance service level agreements (SLAs).
Write comprehensive unit, performance, and automated end-to-end tests for systems.

What we're looking for

7+ years of production development with C#/.NET or .NET Core.
Proven history of building and launching successful products and platforms.
Strong experience in writing unit, performance, and automated end-to-end tests.
Deep understanding of AWS cloud services including S3, SQS, DynamoDB, ElastiCache.
Solid experience in building APIs and backend systems with software design principles.
Active participation in mentoring developers and fostering team consensus.
Hands-on professional experience with AI coding tools like Claude Code or GitHub Copilot.

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