Software Engineer II

CoStar Group

Confirmed live yesterday Trusted

Hybrid

Quick summary

Work type: Hybrid
Location: Irvine, CA
Salary: $118,000–$154,000 / yr
Posted: 30 days ago
Freshness: Confirmed live yesterday
Nearby: 99+ roles within 25 mi

Market check

Salary context

Below market

How this pay compares to similar roles

Similar $147k

This role $136k

$98k most similar roles pay here $199k

This role pays less than 68% of similar roles. Most pay $124,300–$169,050 — the shaded band above. At the midpoint, this role pays about $136k versus about $147k 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 · Software Engineer II

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LoopNet - Software Engineer II will join the engineering team to build scalable, high-quality systems across multiple products and brands. The role involves making key 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 development, and experience with AI coding tools like Claude Code or GitHub Copilot. Preferred skills include Vue.js, React, TypeScript, SQL/MySQL, Apache Kafka, Datadog, Docker, Kubernetes, and Python for data workflows. This role focuses on the commercial real estate marketplace domain, specifically developing software to support property discovery and transaction management for brokers and owners.

What does a Software Engineer earn in California?

Median $214000 from 775 postings across 63 companies.

See salary data

Skills

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

What you'll do

Develop scalable, high-quality systems across multiple products using C# and .NET.
Build and launch backend systems and APIs based on established software design principles.
Integrate AI coding tools like Claude Code or GitHub Copilot to accelerate development 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 meet production SLAs.
Manage microservices, distributed systems, and containerized environments using Docker and Kubernetes.
Perform database design and performance tuning for relational databases like MS SQL or MySQL.
Mentor other engineers and lead technical discussions to build team consensus on architecture decisions.

What we're looking for

Bachelor’s degree from an accredited, not-for-profit university or college.
4+ 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.
Active participation in mentoring developers and building team consensus.
Working knowledge of Vue.js or React in TypeScript (preferred).
Experience with AWS services, microservices, Docker, Kubernetes, and AI coding tools like Claude Code or GitHub Copilot (preferred).

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