Senior Software Engineer, SDK

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 engagement, we enable over a million businesses to keep their users - including readers, fans, players and shoppers - engaged and up to date by delivering 12 billion messages daily. 

1 in 5 new apps launches using OneSignal! We support companies in 140 countries, including Zynga, USA Today, Bitcoin.com, Eventbrite, Tribune, and many more - from startups and small businesses just getting off the ground to established companies communicating with millions of customers.

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, New York, Pennsylvania, Texas, Utah and Washington. As well as in the UK and Singapore - with plans to expand the locations we support in the future. Some roles are hybrid roles and will be listed as such. We have offices in San Mateo, CA and London, UK, and offer flex seating options for employees to work together in-person where we don't have offices. Hiring in Singapore is done in partnership with a local PEO.

OneSignal has a lot of the great tech startup qualities you'd expect, but we don't stop there. Our massive scale and small team, emphasis on healthy life balance and kindness in all our interactions, and focus on ownership and personal growth make OneSignal a uniquely great place to work. 

As an SDK-centric company, we’re constantly evolving our offerings and improving the Developer Experience across the board. With that objective in mind, we are looking for experienced Software Engineers to join our SDK Team. 

The SDK Team is responsible for the components of our software stack that we ship to our customers. These include client libraries for our REST API, CLI Tools, libraries embedded in customer applications(e.g. the Android SDK), and associated tooling and resources. 

Understanding how to better serve our developers is part of the work we do in the SDK Team.

• Solving challenging business use-cases in a project with elegant, readable code and clear tests
• Developing prototypes and analyzing user needs and software requirements to determine feasibility of design within time and cost constraints
• Crafting APIs that …