Senior Software Engineer, SDK

OneSignal, a Series C venture-backed company, is seeking a Senior Software Engineer to join their SDK team. As a leading omnichannel customer engagement solution serving over 1.8 million developers worldwide, OneSignal powers personalized customer journeys across multiple channels including mobile push, web push, in-app messaging, SMS, and email.

The role focuses on evolving OneSignal's SDK offerings and improving Developer Experience. As part of the SDK team, you'll be responsible for developing and maintaining client libraries, CLI tools, and embedded customer application components. The position requires expertise in mobile and web development platforms, with a strong emphasis on creating developer-friendly tools and APIs.

The ideal candidate brings 6+ years of software engineering experience, deep knowledge of various development platforms (Android, iOS, Web, etc.), and a passion for building developer tools. You'll work in a distributed team environment, handling diverse polyglot codebases and engaging directly with the developer community.

OneSignal offers a competitive compensation package including a base salary range of $160,000-$180,000, equity, and comprehensive benefits. The company maintains a strong focus on work-life balance, personal growth, and fostering an inclusive environment. With offices in San Mateo and London, plus remote work options, OneSignal provides flexibility in work arrangements while maintaining a collaborative culture.

Join a rapidly growing team that powers 1 in 5 new app launches and serves companies across 140 countries, from startups to established enterprises like Zynga, USA Today, and Eventbrite. This role offers the opportunity to make a significant impact on developer tools used by millions while working with cutting-edge technologies in a supportive, growth-oriented environment.