Principal Software Engineer

CoStar Group

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Quick summary

Work type: On-site
Location: Irvine, CA
Salary: $214,000–$297,000 / yr
Posted: 1 day ago
Freshness: Confirmed live today
Nearby: 99+ roles within 25 mi

Market check

Salary context

Above market

How this pay compares to similar roles

Similar $206k

This role $256k

$125k most similar roles pay here $315k

This role pays more than 85% of similar roles. Most pay $180,468–$231,000 — the shaded band above. At the midpoint, this role pays about $256k versus about $206k 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 $134,500–$191,500 across 64 roles with salary data.

Most-posted roles

View all roles at CoStar Group

At a glance

TL;DR · Principal Software Engineer

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As a Principal Software Engineer, you will join the development team to own the architecture and design of software systems ranging from full-stack web products to high-volume, secure data pipelines. You will translate complex functional requirements into system architectures for both new greenfield projects and existing infrastructure. Your daily work involves collaborating with product leadership and engineering managers to establish architectural guidelines, mentor technical staff on microservices and real-time data streaming, and ensure systems are well-instrumented for performance and security. The role requires expert proficiency in C#, Java, Python, or JavaScript/TypeScript, alongside extensive experience with AWS services like Lambda, DynamoDB, and S3. You will solve complex problems regarding scalability and reliability within the domain of real estate information and online marketplaces while utilizing tools such as Terraform, GraphQL, and Test Driven Development methodologies.

What does a Software Engineer earn in California?

Median $214000 from 761 postings across 67 companies.

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Skills

AWS Lambda DynamoDB CloudWatch CloudFormation SNS SQS S3 API Gateway Terraform C# Java Python JavaScript TypeScript GraphQL Microservices NoSQL CI/CD Git Azure DevOps Kibana Test Driven Development Infrastructure as Code

What you'll do

Design and own the architecture for full-stack web products and high-volume, secure data pipelines.
Translate complex product requirements into scalable system architectures for both new and existing projects.
Create and maintain architectural diagrams and comprehensive documentation to serve as a primary knowledge source.
Provide technical mentorship and guidance on microservices, micro-frontends, and real-time data streaming.
Advocate for and implement architectural principles to ensure consistent quality across multiple engineering teams.
Diagnose and resolve complex performance, scalability, and reliability issues within enterprise-scale environments.
Design and oversee the implementation of secure software products and platforms.

What we're looking for

Bachelor’s Degree from an accredited, not-for-profit, in-person college or university.
10+ years of hands-on experience designing complex enterprise-level web applications including microservices, serverless, and data systems.
Expert-level proficiency in at least one of C#, Java, Python, or JavaScript/TypeScript.
Significant experience designing and implementing solutions using AWS services like Lambda, DynamoDB, CloudWatch, and S3.
Experience with Test Driven Development methodologies.
Experience modeling and implementing large-scale relational and NoSQL database systems.
Experience designing event-oriented architectures and real-time data streaming solutions.
Ability to communicate through architectural diagrams.
Experience building secure systems and security-minded development practices (experience with financial data is a plus).
Exposure to full web application stack technologies like GraphQL (preferred).
Architect-level certifications from AWS, Azure, or GCP (preferred).
Experience with agile development methodologies (preferred).
Experience with modern source control and CI/CD technologies including Git or Azure DevOps (preferred).
Experience with Infrastructure as Code in Terraform (preferred).
Experience in observability logging/tracing with CloudWatch and/or Kibana (preferred).
Experience building highly secure software, including tokenization and OpenID (preferred).
Team or project leadership experience (preferred).