Senior Software Engineer - CRE Platform

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

Job summary

Domain is seeking a Senior Software Engineer to design, build and evolve the CRE platform, collaborating with product, design and engineering to deliver scalable, reliable software powering Domain's commercial property marketplace.

You will mentor engineers, shape system architecture, and advocate best practices across CI/CD, TDD and testing, while delivering production-grade solutions on AWS using .NET/C#, React and modern frontend tech.

Qualifications

• Proven experience shipping production-grade software.
• Expertise in .NET/C# development and cloud-native apps on AWS.
• Strong frontend skills with React/Next.js/TypeScript.
• Good knowledge of relational databases and distributed systems.

Responsibilities

• Collaborate within a cross-functional team to deliver software solutions.
• Design, develop, and maintain scalable applications and services.
• Write clean, maintainable, well-tested code.
• Deliver features and fixes directly to production.
• Contribute to system architecture and engineering best practices.
• Mentor engineers and advocate for high standards in testing and delivery.
• Identify opportunities to improve performance and reliability.
• Drive continuous improvement across the platform.

Skills

.NET / C#

AWS Cloud

React / Next.js / TS

Relational databases

CI/CD / TDD

Team collaboration

Tools

OpenSearch

PostgreSQL

MySQL

SQL Server

Job description

Domain is seeking a Senior Software Engineer to design, build and evolve the CRE platform, collaborating with product, design and engineering to deliver scalable, reliable software powering Domain's commercial property marketplace.

You will mentor engineers, shape system architecture, and advocate best practices across CI/CD, TDD and testing, while delivering production-grade solutions on AWS using .NET/C#, React and modern frontend tech.