Senior Software Engineer

CoStar Group

Confirmed live yesterday Trusted
Hybrid

Quick summary

Work type
Hybrid
Location
Irvine, CA
Salary
$124,000–$187,000 / yr
Posted
60 days ago
Freshness
Confirmed live yesterday

Market check

Salary context

Below market

How this pay compares to similar roles

Similar $177k
This role $156k
$106k most similar roles pay here $248k

This role pays less than 70% of similar roles. Most pay $149,922–$204,987 — the shaded band above. At the midpoint, this role pays about $156k versus about $177k 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 65 open roles on FindRole.

Listed pay typically runs $133,000–$190,000 across 63 roles with salary data.

Most-posted roles

View all roles at CoStar Group

At a glance

TL;DR · Senior Software Engineer

LoopNet - Senior Software Engineer will join the engineering team to build scalable, high-quality systems across multiple products and brands. The role involves making critical architecture decisions, mentoring other engineers, and utilizing modern AI-driven development practices to accelerate delivery and improve code quality. Day-to-day responsibilities include building APIs, backend systems, and ensuring performance SLAs are met through unit, performance, and automated end-to-end testing. The required technical stack includes C#/.NET or .NET Core, AWS cloud services like S3, SQS, DynamoDB, and ElastiCache, as well as Apache Kafka, Datadog, and Docker. Preferred skills include Vue.js, React, TypeScript, SQL database tuning, and Python for data workflows. The role focuses on the commercial real estate marketplace domain, specifically solving technical challenges related to high-traffic digital platforms and distributed systems within a large-scale information ecosystem.

What does a Software Engineer earn in California?

Median $214000 from 775 postings across 63 companies.

See salary data

What you'll do

  • Develop scalable, high-quality systems across multiple products using C# and .NET technologies.
  • Build and launch backend systems and APIs while adhering to software design principles.
  • Utilize AI coding tools like Claude Code or GitHub Copilot to accelerate delivery and improve code quality.
  • Design and manage cloud infrastructure using AWS services such as S3, SQS, DynamoDB, and ElastiCache.
  • Write unit, performance, and automated end-to-end tests to ensure product reliability.
  • Participate in architectural decision-making for distributed systems and microservices.
  • Mentor other engineers and build team consensus on technical goals.
  • Manage data workflows using relational databases, Kafka, or cloud data warehouses like Snowflake.

What we're looking for

  • Bachelor’s degree from an accredited, not-for-profit university or college.
  • 7+ years of production development experience with C# and .NET or .NET Core.
  • Proven history of building and launching successful products and platforms that meet performance SLAs.
  • Experience writing unit, performance, and automated end-to-end tests.
  • Strong experience building APIs and backend systems using software design principles.
  • Hands-on experience with AWS services, Apache Kafka, Datadog, and microservices architecture.
  • Proficiency in AI coding tools such as Claude Code or GitHub Copilot.
  • Knowledge of Vue.js/React in TypeScript and relational database performance tuning.

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