Senior Software Engineer - .NET, Cloud & Leadership

CoStar Group; Sydney; On-site; AUD 150,000 - 190,000; Full time

Job summary

Domain Holdings Australia (Domain), part of the CoStar Group, is seeking a Senior Software Engineer for the Audience Amplification Platform in Sydney. You will own the full project lifecycle from design and development to testing, deployment, and ongoing improvements.

The role emphasizes mentoring junior engineers and collaborating with a cross-functional squad and Product Owner to maximize customer value. You will bring deep expertise in C#/.NET, ASP.NET Core, and modern frontend tech, with

Qualifications

• Experience with .NET, React, and TypeScript or similar frontend technologies.

Responsibilities

• Owns the full lifecycle of medium-sized projects from design to deployment and improvements.

Skills

C# / .NET

ASP.NET Core

React

TypeScript

Cloud platforms

Microservices

Event-driven architecture

API design

Kafka/SNS-SQS

SQL data stores

NoSQL databases

DevOps / CI/CD

Education

Degree in Computer Science / Software Engineering or related field

Tools

AWS

Azure

GCP

PostgreSQL

MySQL/Aurora

DynamoDB

Redis

Job description

Domain Holdings Australia (Domain), part of the CoStar Group, is seeking a Senior Software Engineer for the Audience Amplification Platform in Sydney. You will own the full project lifecycle from design and development to testing, deployment, and ongoing improvements.

The role emphasizes mentoring junior engineers and collaborating with a cross-functional squad and Product Owner to maximize customer value. You will bring deep expertise in C#/.NET, ASP.NET Core, and modern frontend tech, with