Data Quality Officer

Company Overview: CoStar Group (NASDAQ: CSGP) is a global leader in commercial and residential real estate information, analytics, and online marketplaces. CoStar Group digitizes the world's real estate, empowering people to discover properties, insights, and connections that improve their businesses and lives.

As a Data Quality Officer, you will be the guardian of our data integrity. Your focus will be on manual data labeling, validation, and remediation to ensure AI models and business teams can rely on clean, accurate data.

• Ensure high quality, reliable data that business stakeholders can trust.
• Improve the accuracy and performance of AI models through meticulous data validation and labeling.
• Reduce business risk by identifying and correcting data errors, preventing biased outcomes.
• Streamline operational efficiency by reducing time teams spend cleaning or correcting data.
• Document findings clearly and follow complex guidelines to maintain data standards.
• Support ongoing AI/ML evaluation by providing validated, structured data inputs.

Essential:

• Exceptional attention to detail and analytical skills.
• Ability to follow complex guidelines and document findings clearly.
• Strong written and verbal communication skills.
• Proficiency with office productivity tools, including Microsoft Excel or Google Sheets.
• Proven hands on experience in data validation, data labeling, or data entry.
• Bachelor's Degree or equivalent from an accredited university or college.

Nice to Haves:

• Experience in real estate or property technology.
• Familiarity with data visualisation tools (e.g., Tableau, Power BI).
• Experience in AI/ML or LLMs validation, particularly for information extraction tasks.
• Ability to identify potential data quality issues at scale and think critically about solutions.

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.

• Flexible hybrid working.
• Mentoring and leadership programs, with access to Learning & Development tools.
• First rate parental leave and support for working parents.
• Regular social events including our famous Innovation Days.

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. 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 37 years, giving us the perspective to create truly unique and valuable products and services. We've continually refined, transformed and perfected our approach to our business, creating a language that has become standard in our industry and for our customers. 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. CoStar is committed to creating a diverse environment and is proud to be an equal opportunity workplace and affirmative action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. CoStar is also committed to compliance with all fair employment practices regarding citizenship and immigration status. If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access as a result of your disability. You can request reasonable accommodations by calling 1 or by sending an email to .