Customer Support Specialist, OntheMarket - London

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.

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.

Responsibilities

• Provide technical and customer support to estate and letting agents via inbound and outbound calls, email, and occasional face‑to‑face meetings.
• Liaise with clients and their third‑party software providers to establish and maintain automated data connections, assess data quality, and resolve issues.
• Confidently support customers across calls and email, managing a varied workload in a fast‑paced environment with strong time management.
• Investigate and resolve queries raised by clients, consumers using the OnTheMarket website, and internal colleagues, communicating solutions clearly and managing expectations.
• Analyse raw data from feed providers and work with clients, suppliers, developers, and internal technology teams to diagnose and resolve technical issues.
• Monitor and manage tickets within the ticket management system, ensuring issues are prioritised and progressed effectively.
• Proactively audit client accounts to identify and resolve potential issues.
• Independently troubleshoot live service issues, clearly documenting investigations and resolutions, and sharing knowledge with colleagues where appropriate.
• Support new product rollouts, system enhancements, and ad‑hoc projects as required.
• Maintain consistently high standards of customer service in all interactions.

Qualifications

• Previous call centre or customer support experience, comfortable handling both inbound and outbound calls.
• Proficient in Microsoft Suite (Apps), Zoho CRM, and Zoho Desk.
• Knowledge of all major internet browsers, e.g. Internet Explorer, Edge, Chrome, Firefox and Safari.
• Strong written and verbal communication skills, with confidence in providing email‑based support and troubleshooting.
• Excellent time management and prioritisation skills.
• Demonstrate interest in the real estate industry.
• Able to work effectively under pressure within a busy, fast‑moving environment.
• Proactive problem‑solver who works well in teams or autonomously, grasping concepts quickly and clearly.
• Able to make decisions independently throughout the problem‑solving process.
• Must have excellent attention to detail, be self‑motivated, organised, flexible and approachable.
• Bachelor’s degree or equivalent experience.

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. As well as having an outstanding working environment based in the Blue Fin or one of our key UK‑wide hubs. 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!

Equal Employment Opportunity

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