Principal AI/ML Specialist

Job Description

Company Overview: 

CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index and the NASDAQ 100, CoStar Group is on a mission to digitize the world's real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. 

We have been living and breathing the world of real estate information and online marketplaces for over 35 years, giving us the perspective to create truly unique and valuable offerings to our customers. We've continually refined, transformed, and perfected our approach to our business, creating a language that has become standard in our industry, for our customers, and even our competitors. We continue that effort today and are always working to improve and drive innovation. This is how we deliver for our customers, our employees, and investors. By equipping the brightest minds with the best resources available, we provide an invaluable edge in real estate.

About Domain: 

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 (NASDAQ: CSGP), a global leader in commercial real estate information, analytics, online marketplaces and 3D digital twin technology. Together, Domain and CoStar Group is dedicated to digitising the world's real estate, empowering all people to discover properties, insights, and connections that improve their businesses and lives.

At Domain, we're on a mission to make the property journey easier, more transparent, and more intelligent — and we believe AI and machine learning are central to delivering on that promise.

What makes this role unique

• You'll lead by influence, not hierarchy — setting direction, mentoring others, and driving strategic projects that matter.

• You'll work directly on initiatives that shape how millions of users discover and engage with Domain, starting with our SEO platform and extending across the business.

• You won't just prototype — you'll ship. That means ownership of everything from opportunity scoping through to robust, scalable deployment.

• You'll work with one of the best data stacks in the country — and you'll have the autonomy to push the boundaries of what AI can do in our space.

What you'll be doing

• Identifying high-impact opportunities to apply AI and machine learning to real business problems — and backing them with clear ROI and technical feasibility.

• Owning projects end-to-end: from concept, design, and stakeholder engagement through to build, testing, and deployment.

• Leading development of scalable AI/ML systems — including MLOps infrastructure that keeps things running smoothly and cost-effectively in production.

• Pioneering the use of LLMs and GenAI across our products — designing secure, useful, and reliable applications of these technologies.

• Acting as a force multiplier for the business by mentoring others, running workshops, and helping to embed AI/ML thinking across teams.

What we're looking for:

You don't need to tick every box — but if you recognise yourself in most of the below, we'd love to hear from you.

• Expertise in production-grade AI/ML systems — you've designed and deployed models at scale in the cloud, with performance, cost and safety in mind.

• Deep experience with modern MLOps — including CI/CD, monitoring, and model lifecycle management.

• Hands-on with GenAI/LLMs — from prompt engineering and RAG pipelines to orchestration frameworks like LangGraph or LangChain.

• Strong data foundations— you're fluent in Python, SQL, and cloud data platforms like AWS and Snowflake.

• Business-first mindset — you can translate technical work into real commercial outcomes, and clearly communicate value to stakeholders.

Nice To Have

Familiarity with SEO and how AI can supercharge search visibility is a strong plus.

Why join us?  

We're the kind of place you can make a real impact, with a workplace culture where you can be you. It's a fun, safe space where you'll always feel you belong. Perks of the role include: 

• Flexible hybrid working  

• First-rate parental leave 

• Continuous opportunities to leap, learn and grow in a team that values creativity and innovation

We don't just talk, we do. Every day we solve property problems for Australians and beyond. We encourage our people to see the possibilities, and turn them into realities.  

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. 

Equity, Diversity and Inclusion at Domain 

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 or leave a message on and we will get back to you.

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