OneSignal, Inc.

Senior Software Engineer, Email Team (Fullstack)

📍 Location
london, on
⏰ Job Type
Full-time
📅 Posted
June 04, 2026
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Job Description

OneSignal is a leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. On a mission to democratize customer engagement, we enable over a million businesses to keep their users engaged and up to date by delivering billions of messages daily.

1 in 5 new apps launches using OneSignal! And we support companies in 140 countries! Our customers range from startups and small businesses just getting off the ground to established companies such as Zynga, USA Today, Bitcoin.com, Eventbrite, Tribune, and many more.

We’re Series C, venture-backed by SignalFire, Rakuten Ventures, Y Combinator, HubSpot, and BAM Elevate. We offer remote work as the default option in the United States in California, Colorado, Massachusetts, New York, New Jersey, Oregon, Pennsylvania, Texas, Utah and Washington. As well as in the UK, Singapore, and Canada - with plans to expand the location...

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