Customer Support Specialist, OntheMarket - London

Company: CoStar Realty Information, Inc.

Location: London

Posted: April 22nd, 2026

Customer Support Specialist, OnTheMarket - London

Role Description:
As part of the Technical Support team, you’ll ensure client property listings are accurately processed and displayed on the OnTheMarket website, while handling queries and complaints from both clients and consumers. You’ll support estate and letting agents using OnTheMarket Expert, our secure platform for managing listings, enquiries, and reporting, and act as a product champion with strong system knowledge. The role also involves working closely with third‑party software providers, internal product and development teams, and staying up to date with ongoing website enhancements to ensure a smooth customer experience.

Responsibilities

Qualifications

Benefits

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. Other perks include full private medical cover, dental cover, life assurance and member rewards, 28 days annual leave, a competitive pension, season ticket loans, enhanced maternity and paternity pay, and much more.

CoStar Group is an Equal Employment Opportunity Employer; we maintain a drug‑free workplace and perform pre‑employment substance abuse testing. 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, colour, 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 www.costargroup.com/careers as a result of your disability.

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