Senior Data Scientist

Senior Data Scientist

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 decision science, advanced analytics and AI are central to delivering on that promise.

What makes this role unique

This role blends advanced data science with high-impact decision-making . You'll work with Domain's uniquely rich marketplace data; from buyer search journeys to seller pipelines, listing quality, agent behaviour, and lead flows; and use it to uncover patterns, build models, and design the metrics that matter.

You'll apply machine learning, causal methods, forecasting, uplift modelling, segmentation, and behavioural analytics to help shape product, marketplace, and commercial strategy. Instead of working on isolated models, you'll influence how the business measures success, identifies opportunities, and makes high-stakes decisions.

You'll join Domain at a pivotal moment within CoStar Group, helping to build the next generation of intelligent, data-driven decisions , while owning a uniquely broad and impactful Data Science remit that spans modelling, metrics, and marketplace intelligence.

What you'll be doing

• Partner with stakeholders across Product, Marketing, Strategy, and Sales to identify, design, and implement decision science solutions and analytics that solve real business problems.
• Communicate insights clearly; frame trade-offs, quantify uncertainty, and tell structured stories that shape strategy.
• Act as a thought partner for leadership, using data insights to influence product priorities, sales strategies, and commercial outcomes.
• Perform deep-dive analytics and modelling to uncover customer behaviour patterns, lead quality drivers, listing performance, supply/demand dynamics, and marketplace efficiency.
• Design north-star and guardrail metrics , scorecards, and measurement frameworks that become the foundation for product and marketplace success.
• Apply causal inference and causal ML (DiD, matching, IV, CATE, Meta-Learners) to estimate the true impact of product features, pricing changes, marketing campaigns, and marketplace interventions.
• Translate modelling outputs and analytical findings into clear narratives with actionable recommendations, uncertainty ranges, and commercial implications.
• Work hands-on with large, complex datasets in Snowflake & AWS to build decision-quality analyses and models that directly shape strategy and execution.

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.

Core Data Science & Analytics Skills

• Strong background in statistical modelling , machine learning , and advanced analytics .
• Experience analysing large-scale behavioural, event, or marketplace datasets and extracting insights from real-world noisy data.
• Strong causal inference foundation and robust measurement when RCTs are not feasible.
• Depth in metric design , KPI creation, guardrail metrics, measurement strategies, and diagnosing metric movement.
• Proficiency with Python (pandas, numpy, scikit-learn, statsmodels, causal libraries) and SQL , plus experience with cloud data stacks (AWS, Snowflake).

Analytical Thinking & Communication

• Ability to structure ambiguous problems into analytical frameworks and translate them into models or analyses.
• Clear communicator able to explain model behaviour, assumptions, uncertainty, and trade-offs to both technical and non-technical stakeholders.
• Proven ability to link modelling/analysis to real product, revenue, or customer outcomes .

Mindset

• Hands-on data scientist who enjoys exploring data, prototyping models, validating assumptions, and iterating quickly.
• Curious, pragmatic, and impact-oriented; someone who likes to use modelling and analytics to drive actual product and business decisions.

Nice To Have

• Experience in experimentation : designing robust A/B tests, quasi-experiments, and ensuring decision-quality analyses.
• Experience in marketplace or platform businesses.

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 1300 858 356 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