Senior Engineer - Business Technology

CoStar Group · Sydney

Job Description

Build AI-powered tools and automations that are transforming how Domain operates.

We're looking for a Senior Software Engineer to join our Integration & Automation Squad, where you'll develop the platforms, integrations and intelligent automation capabilities that power our products and internal systems.

Working with C#, .NET and TypeScript, you'll help create scalable, event-driven solutions that connect systems, unlock data and enable AI-driven experiences across the business.

What You'll Do

Build AI-powered tools, automations and platform capabilities used across Domain.
Design, develop and support scalable software solutions from concept through to production.
Create real-time integrations using APIs, messaging and event-driven architecture.
Build and maintain cloud-native microservices and distributed systems.
Solve complex technical challenges across a large and evolving technology landscape.
Collaborate closely with Product, Design and Engineering teams to deliver customer value.
Drive code quality, security, performance and engineering best practices.
Mentor engineers and contribute to a culture of continuous improvement.
Influence architecture, technical standards and long-term platform strategy.

Ideally You'll Have

Strong commercial experience with C#, .NET and TypeScript.
Experience building scalable APIs, integrations and distributed systems.
Expertise with microservices and event-driven architectures.
Experience with AWS, Azure or GCP.
A strong understanding of cloud-native design patterns and software architecture.
Experience designing solutions for scale, reliability and maintainability.
Knowledge of modern testing practices including TDD, BDD and shift-left testing.
A security-first mindset and experience with secure coding practices.
Experience working in Agile, cross-functional product teams.
Previous experience mentoring engineers and helping teams grow.

Why Join Us?

This is an opportunity to work on high-impact engineering challenges while building AI-powered tools and intelligent automations that are used across Domain's platforms and business operations.

You'll join a collaborative team, work on modern cloud technologies, and have the opportunity to influence both the technical direction of the platform and the future of AI-enabled products within the business.

If you enjoy solving complex integration challenges, building scalable systems and creating AI-driven solutions that have real-world impact, we'd love to hear from you.

What’s in it for you

Working at CoStar Group means you'll enjoy a culture of collaboration and innovation that attracts the best and brightest across a broad range of disciplines. We offer you generous compensation and performance-based incentives. As well as having an outstanding working environment, other perks include extra days of annual leave, leadership development programs, LinkedIn Learning, Perkbox discounts and much more!

At CoStar, we recognise the positive value of diversity and promote equality. We aim at all times to recruit the person who is most suited to the job and welcome applications from people of all backgrounds including but not limited to; people of all genders, of all ages, sexual orientations, ethnicities, nationalities, religions and

beliefs.

About Domain (part of the CoStar Group)

Domain is a leading property technology and services marketplace that is home to one of the largest portfolios of property brands in Australia, including the Domain, Allhomes and Commercial Real Estate (CRE) platforms. In 2025, Domain became 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.

Equity, Diversity & Inclusion

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 edi@domain.com.au or leave a message on 1300 858 356 and we will get back to you.

What’s Next?

We’ll give your application the thoughtful attention it deserves and get back to you as soon as possible. If there’s a match, one of our recruitment consultants will reach out—so keep your phone handy! We’re genuinely excited about the chance to work together and make a meaningful impact.

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

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