Software Engineer, Notifications Team

Join to apply for the Staff Software Engineer, Notifications Team role at One Signal

Join to apply for the Staff Software Engineer, Notifications Team role at One Signal

One Signal 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 One Signal! 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, , Eventbrite, Tribune, and many more.

We’re Series C, venture-backed by Signal Fire, Rakuten Ventures, Y Combinator, Hub Spot, 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 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 in NY and other areas. Hiring in Singapore is done in partnership with a local EOR.

One Signal 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 One Signal a uniquely great place to work.

Our blog contains more information about the One Signal Engineering career ladder, and our diverse team.

About The Team

The Notifications team at One Signal builds the UI, APIs, and core delivery systems that power our industry-leading web push, mobile push, and in-app messaging products. We operate at massive scale, helping thousands of businesses deliver billions of messages that are timely, personalized, and reliable.

Our work sits at the intersection of deep technical complexity and thoughtful product design. We tackle challenges such as cross-platform message rendering, real-time delivery orchestration, channel-specific capabilities and constraints, and creating intuitive workflows that help customers craft meaningful engagement. The team also drives innovation in areas like rich media support, sequencing and personalization, user segmentation, and the evolving standards of modern browsers and mobile platforms.

We iterate quickly to bring impactful features to market while maintaining high standards for performance, reliability, and user experience. Our mission is to empower customers to communicate with their users in the most effective, scalable, and delightful way possible.

What You'll Do

• Collaborate with Product Managers, Designers, and Engineers to implement new features for our Customer Engagement products, using Rust, Type Script, and Ruby.
• Conduct code and specification reviews, providing technical insights to improve our features and code base
• Resolve production reliability issues and ensure the system scales to meet the demands of our customers
• Refactor components on the frontend, creating extensible, reusable and clean component architecture
• Stay up-to-date with the latest industry trends and technologies, incorporating new ideas into our engineering processes
• Present Technical Specifications to other Staff Engineers, drive alignment on proposed solutions, and prototype draft implementations

• 8+ years of professional software development experience
• Experience creating extensible, reusable React components
• Experience with Type Script and at least one system programming language (Rust, Go, Ruby, etc)
• Experience working with backend distributed systems at scale
• Ability to own and deliver end to end software functionality from design/architecture, through implementation, testing, production, release, and monitoring
• Ability…