Zoopla has announced four new senior staff, saying the arrivals signal further long-term investment in product innovation.

Holly Westall becomes head of product. She was formerly with Scout24, the German online listings company, where she held a similar position. She brings global expertise to Zoopla, having worked at a variety of property portals spanning across Europe to Australia.

Her focus will be on ensuring value to partners, particularly with regards to listing marketing, property valuations and inventory acquisition tools and services.

Paul Hammond, Zoopla’s new head of engineering, has previously held software leadership roles at eBay and Microsoft (including MSN and Skype). His focus will be on the consumer, specifically developing and improving Zoopla’s web and mobile user experiences.

Carl Olivier joins from Skype as head of product for software and productivity. He will oversee the tools Zoopla creates for agents to help them operate as efficiently as possible, delivering maximum value for money.

Peter Sellwood, new head of engineering at Zoopla’s software division, joins from American Express.

His brief at Zoopla is to develop Zoopla’s estate agent customer management products which enhance the ability of agents to manage their property portfolios and clients.

Charlie Bryant, managing director of Zoopla, said: “We are excited to welcome Carl, Holly, Peter and Paul to Zoopla’s product team.

“This investment in talent feeds into our long-term strategy to deliver a better quality experience for users on our portal which will drive better quality leads to agents.

“Ensuring Zoopla is at the forefront of market leading products and data is a huge priority for us, and investment in our people is the first step to making this happen.”