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 businesses to keep their 1.5B monthly active users engaged and up to date by delivering over 1.3T messages a year! 

1 in 4 app publishers trust OneSignal to power their customer engagement! 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 Live Nation, American Express, Whole Foods, Zynga, Bitcoin.com, 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 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, and hiring in Canada is done in partnership with Rippling's EOR.

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 collaboration, and focus on ownership and personal growth make OneSignal a uniquely great place to work. 

Our blog contains more information about Engineering at OneSignal.

About The Team:

The Email team at OneSignal develops the UI and API powering our market-leading email services. This product-focused team builds out scalable solutions to complex problems such as campaign warmups, message personalization, and link tracking.

We’re continually improving our product to enhance our customers’ experience and empower them to create effective and impactful messaging campaigns. We move quickly to deliver value to our customers, while maintaining a high standard for reliability and functionality.

As a Senior Software Engineer, you'll be expected to take ownership of end-to-end projects that require developing in multiple languages across the stack. Your ability to consider performance characteristics, user experience, and maintainability of systems will be critical to success in this role. Your contributions will shape the way household brand names engage with their users. You will drive organizational proficiencies in key technologies and technical areas, such as scalable architecture and programming language expertise.

What You'll Do:

• Collaborate with Product Managers, Designers, and Engineers to implement new features for our Customer Engagement products, using TypeScript, Ruby, and Rust.
• 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 engineers, drive alignment on proposed solutions, and prototype draft implementations

What You'll Bring:

• 6+ years of professional software development experience
• Experience creating extensible, reusable React components
• Experience with TypeScript and at least one system programming language (Rust, Go, Ruby, etc)
• Ability to own and deliver end to end software functionality from design/architecture, through implementation, testing, production, release, and monitoring
• Strong Usage of AI tooling or integrations 
• Ability to manage complex cross-team coordination and work closely with product owners
• Familiarity with frontend code-testing tools like react-testing-library, cypress, and storybook
• Ability to evaluate and communicate different engineering solutions and trade-offs
• A strong willingness to learn new technologies rapidly
• Experience designing RESTful and/or gRPC APIs

We value a variety of experiences, and these are not required. It would be an added bonus if you have experience in any of the following:

• Experience working with backend distributed systems at scale
• Experience with event streaming framework such as Apache Kafka
• Experience working with analytics and observability tools like Mixpanel and Rollbar
• Experience with Rust or another systems programming language
• Experience with Kubernetes
• Experience with data modeling using at least one database engine (MySQL, PostgreSQL, Redis, Cassandra, ScyllaDB, etc.)

The New York and California base salary for Senior Software Engineer full time position is between $170,000 and $190,000. Your exact starting salary is determined by a number of factors such as your experience, skills, and qualifications. In addition to base salary, we also offer a competitive equity program and comprehensive and inclusive benefits.

Qualities we look for:

• Friendliness & Empathy
• Accountability & Collaboration
• Proactiveness & Urgency
• Growth Mindset & Love of Learning

In keeping with our beliefs and goals, no employee or applicant will face discrimination/harassment based on: race, color, ancestry, national origin, religion, age, gender, marital domestic partner status, sexual orientation, gender identity, disability status, or veteran status. Above and beyond discrimination/harassment based on 'protected categories,' we also strive to prevent other, subtler forms of inappropriate behavior (e.g., stereotyping) from ever gaining a foothold in our office. Whether blatant or hidden, barriers to success have no place in our workplace.

Applicants with disabilities may be entitled to reasonable accommodation under the terms of the Americans with Disabilities Act and certain state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on OneSignal. Please inform us if you need assistance completing any forms or to otherwise participate in the application and/or interview process.

OneSignal collects and processes personal data submitted by job applicants in accordance with ourPrivacy Policy - including GDPR and CCPA compliance. Please see our privacy notice for job applicants.