Max Williams, co-founder of Pusher
The realtime API company, which helps developers add communication and collaboration features to their apps, will open a new office in San Francisco.
London-based tech firm Pusher has closed a £5.7m Series A funding round led by Balderton Capital, with participation from Heavybit.
Pusher’s products make it easier for app developers to add realtime features to their apps, such as communication and collaboration tools.
More than 200,000 developers worldwide use Pusher’s products and more than 40 billion messages per day are now sent using APIs provided by the company, connecting more than eight billion devices per month.
Max Williams, Pusher’s co-founder, said: “Pusher came into being because as developers we ran into problems that required realtime infrastructure. We soon realised that others had the same problem.
"Application developers are such a vital part of the modern economy. We love providing APIs that allow them to do more and spend their time building amazing products."
He added: “The majority of our customers are in the US and this investment will allow us to serve them better with an office in California, as well as helping us develop more products that will make developers’ lives easier.”
Based in London, Pusher currently employs 60 people. By the end of 2018 the company hopes to have up to 30 people working in a new US office.
The US team, which will be made up of sales, marketing and customer support staff, will initially be based in the offices of investor Heavybit.
As well as ramping-up commercial activities, the funding will allow Pusher to continue its R&D efforts as it works to add more products to its portfolio.
James Wise, partner at Balderton Capital, added: “The web was built to be mostly asynchronous, but Pusher’s infrastructure and their unique platform allows the company to rapidly roll out new products to bring realtime features to everyone.
“We love that they have been growing organically for a long time by building a hugely admired developer-focused culture, and we hope with this capital they’ll be able to serve that market even better.”
Pusher has gained significant traction since the company was formed in 2011. The company’s products are used by everyone from one-person operations to global brands.
The New York Times uses Pusher for updating its realtime news feeds, Mailchimp for internal collaboration tools, Intercom for chat and DraftKings for updating its realtime leaderboards.
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