Senior Software Engineer – Platform & Cloud Lead

CoStar Group; Sydney; On-site; AUD 140,000 - 190,000; Full time

Job summary

Domain, now part of CoStar Group, is seeking a Senior Software Engineer for the Audience Amplification platform. You will drive the full software lifecycle and craft scalable solutions that align with business goals, while mentoring teammates and producing high-quality code.

You’ll work with .NET, React, and cloud technologies in a fast-paced, cross-functional squad, ensuring secure, robust software that delivers customer value.

Qualifications

• Proven experience delivering high-quality software across full lifecycle.
• Strong proficiency in C# / .NET and ASP.NET Core.
• Experience with React or TypeScript frontend.
• Familiarity with cloud platforms and microservices.

Responsibilities

• Lead end-to-end lifecycle from design to deployment.
• Write, review, and co-author production-ready code.
• Collaborate with Product Owner to align with business value.
• Mentor junior engineers and promote engineering excellence.

Skills

.NET / C#

React

TypeScript

AWS / Azure / GCP

Microservices

Kafka / SNS/SQS

PostgreSQL / MySQL

DynamoDB / Redis

CI/CD / IaC

Security best practices

Tools

ASP.NET Core

Docker

Kubernetes

CI/CD pipelines

Job description

Domain, now part of CoStar Group, is seeking a Senior Software Engineer for the Audience Amplification platform. You will drive the full software lifecycle and craft scalable solutions that align with business goals, while mentoring teammates and producing high-quality code.

You’ll work with .NET, React, and cloud technologies in a fast-paced, cross-functional squad, ensuring secure, robust software that delivers customer value.