Senior or Staff Software Engineer, Backend

OneSignal is a leading omnichannel customer engagement solution that has revolutionized how businesses connect with their users. As a Series C company backed by notable investors like SignalFire, Rakuten Ventures, and Y Combinator, we're powering communications for over 1.8 million businesses worldwide, including major names like Zynga, USA Today, and Eventbrite.

Our platform specializes in delivering billions of messages daily through multiple channels including mobile and web push notifications, in-app messaging, SMS, and email. We're proud that 1 in 5 new apps launches using OneSignal, demonstrating our significant market presence across 140 countries.

As a Senior or Staff Backend Engineer, you'll be working across critical teams including Integrations, Analytics, and User Data. You'll be instrumental in designing and deploying high-scale distributed systems, leading technical projects, and contributing to our engineering culture of continuous improvement. We offer a flexible remote-first environment with offices in San Mateo, CA and London, UK.

The role combines technical leadership with hands-on development, where you'll collaborate with Product Managers, Designers, and fellow engineers to build and ship high-impact features. You'll be working with cutting-edge technologies like Rust, Golang, ScyllaDB, and Kafka, while having the opportunity to influence architectural decisions and drive innovation.

We pride ourselves on maintaining a healthy work-life balance and fostering a culture of kindness, ownership, and personal growth. Our comprehensive benefits package, competitive salary range ($160,000-$210,000 based on level), and equity program make OneSignal an excellent place to advance your career while making a significant impact on the future of customer engagement technology.