Senior Full Stack Engineer

CoStar Group

Confirmed live 2 days ago High trust

Quick summary

Work type: On-site
Location: Arlington, VA
Salary: $143,000–$187,000 / yr
Posted: 41 days ago
Freshness: Confirmed live 2 days ago
Nearby: 99+ roles within 25 mi

Market check

Salary context

Below market

How this pay compares to similar roles

Similar $190k

This role $165k

$133k most similar roles pay here $235k

This role pays less than 72% of similar roles. Most pay $157,425–$222,125 — the shaded band above. At the midpoint, this role pays about $165k versus about $190k 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 Full Stack Engineer

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As a Senior Full Stack Engineer on the Platform Development team, you will expand a data platform supporting major real estate brands. You will build large, distributed, API-driven systems for thousands of users while integrating AI skills, agents, and intelligent workflows into internal and customer-facing applications to improve platform intelligence. Your daily work involves developing robust web applications and utilizing AI models to enhance system monitoring, observability, and diagnostic capabilities. The role requires proficiency in TypeScript, C#, .NET, SQL Server, and AWS, along with experience in React, Node, Vite, and Terraform. You will also leverage large language models, context engineering, and agent-based architectures to solve complex business challenges. Key technical components include Kafka, DynamoDB, SQS, Kubernetes, and EKS, all while ensuring high data quality and maintaining rigorous software design standards within an agile environment.

What does a Full Stack Engineer earn?

Median $165000 from 109 postings across 37 companies.

See salary data

Skills

TypeScript C# .NET SQL Server AWS React Terraform Vite Kubernetes EKS ECS DynamoDB SQS Kafka Datadog Agile Infrastructure as Code

What you'll do

Build large-scale, distributed, API-driven systems for tens of thousands of users.
Integrate AI skills, agents, and intelligent workflows into internal and customer-facing applications.
Develop robust, maintainable code using TypeScript, C#, .NET, SQL Server, and AWS.
Build and maintain web applications using React and TypeScript.
Use AI models to enhance system monitoring, observability, and diagnostic capabilities.
Lead software design, development standards, and code review practices.
Identify opportunities for AI-driven workflows and automation to create business value.

What we're looking for

Bachelor's Degree from an accredited, not-for-profit, in-person university or college.
3+ years of experience in .NET development (C#) including web APIs, background services, and shared packages.
3+ years of experience with React.
5+ years of experience with TypeScript and modern frontend/backend JS tooling like Node and Vite.
Experience architecting and building large-scale distributed, service-oriented systems in an agile environment.
Experience with Infrastructure as Code (IaC) tools such as Terraform.
Working knowledge of cloud-based platforms such as AWS or Azure.
Familiarity with LLMs, context engineering, agent-based architectures, and AI-assisted development practices.

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