Senior Software Engineer - Audience Amplication

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

Senior Software Engineer – Audience Amplification

The Senior Engineer is pivotal in supporting the delivery of our Domain Strategy by driving innovation and ensuring the development of high-quality software solutions. They are responsible for the entire lifecycle of medium-sized projects: engineering design, development, test, production, and deployment and subsequent fixes and improvements.

By leveraging advanced technical skills and a deep understanding of software engineering principles, the Senior Engineer contributes to the creation of robust, scalable, and efficient applications that align with our strategic goals. This role involves writing and reviewing code, as well as architecting solutions that meet both current and future business needs.

The Senior Engineer plays a crucial role in mentoring and guiding more junior team members, fostering a culture of continuous improvement and engineering excellence. By leading by example and providing support, this role helps build a strong, cohesive squad team capable of tackling complex challenges and delivering high-quality software products. The Senior Engineer also collaborates closely within their cross-functional squad team, working closely with the Product Owner to ensure that software solutions are aligned with customer value and business needs.

Squad Mission

The Audience Amplification Platform team sits within the Agent Division and is responsible for Domain Group’s digital marketing innovation, powering the next generation of property advertising beyond our owned platforms. The team builds and supports Domain’s social platform products, enabling high-impact campaigns across Facebook, Instagram, Google and other leading digital channels. Our mission is to make every campaign smarter, more transparent and more effective for our customers.

Responsibilities

• Responsible for the entire lifecycle of projects: engineering design, development, test, production, and deployment and subsequent fixes and improvements.
• Consistently writes, co-writes, and reviews documentation and production-ready code that is clear, concise, tested, and easily understood by others.
• Proficient in multiple languages, frameworks, and tools.
• Quick and effective in identifying and resolving issues, balancing trade-offs between speed, quality, and technical debt.
• Approaches work with a security lens and actively looks for security vulnerabilities both in code and when providing code reviews.

Ideally you will have

• Experience with .NET, React, TypeScript or similar frontend technologies.
• Experience with cloud platforms such as AWS, Azure or GCP.
• Experience with microservices and event-driven architectures
• Experience with API and asynchronous integration patterns such as SNS/SQS and Kafka.
• Experience with SQL data stores (PostgreSQL, MySQL/Aurora) and NoSQL (DynamoDB, Redis)
• Experience with DevOps practices, CI/CD, and infrastructure-as-code

Technical Skills

• Deep expertise in C# / .NET and ASP.NET Core.
• Understands shift-left testing and how to implement it in practice
• Familiar with Functional and Object Oriented programming
• Familiar with Cloud Design patterns, TDD, BDD and Domain Driven design
• Familiar with modern Application Security Practices (OWASP)
• Degree in Computer Science / Software Engineering or related field

What’s in it for you?

The opportunity to work for Domain now part of CoStar Group a global leader in commercial real estate information, analytics, online marketplaces and 3D digital twin technology. We are dedicated to digitising the world’s real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives.

Domain is enthusiastically and unapologetically committed to fostering an equitable, inclusive work culture which reflects our customers and communities. We are proactively looking for candidates from all lived experiences, including people with disability, and people of all ages, ethnicities, cultures (including Aboriginal and Torres Strait Islander Peoples), faiths, sexual orientations, and gender identities (including trans and non-binary people).

We are committed to providing an equitable recruitment process for people with disability. If you require adjustments during the process we’re here to support. If you wish to receive this job advertisement in an accessible format, or have a confidential chat about workplace adjustments, please contact our Equity, Diversity and Inclusion team at ***email_hidden*** or leave a message on 1300 858 *** and we will get back to you.

Equal Employment Opportunity

CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug-free workplace and perform pre-employment substance abuse testing