We started as app developers who just wanted a developer-friendly API for push notifications. Finding no good solution, we built one ourselves.

Today, OneSignal is the leading solution for sending effective messages across channels including mobile push notifications, web push notifications, in-app messaging, SMS, and email. We support over 1,800,000 of the world's leading marketers and developers.

OneSignal is available on every platform and development environment, letting content creators focus on quality user engagement instead of complex implementation.

We are growing faster than ever, and hiring in all departments. We hope you'll apply and we look forward to meeting you!

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 billions of 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, 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 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. 

Our blogcontains more information about the OneSignal Engineeringcareer ladder, and ourdiverse team.

About The Team:

The SMS team at OneSignal develops the UI and API powering our market leading text messaging customer engagement solution. The team tackles challenges at the intersection of engineering and product development, solving complex problems such as global quiet hours compliance across 40 time zones, and conversational text messaging in the age of AI.

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

As a Staff 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 expertis

What You'll Do:

• Collaborate with Product Managers, Designers, and Engineers to implement new features for our Customer Engagement products, using Rust, TypeScript, 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

What You'll Bring:

• 8+ 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)
• 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 to manage complex cross-team coordination and work closely with product owners
• 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 with event streaming framework such as Apache Kafka
• 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 Staff Software Engineer full time position is between $190,000 and $210,000. 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.

Full stack developers primarily build software using the following:

• React
• Typescript, JS, CSS
• Ruby on Rails
• Postgres

Backend developers primarily build software using the following:

• Rust
• Ruby on Rails
• Postgres

Mobile developers primarily build software using the following:

• Java
• Objective-c/Swift
• C#
• Lua
• C++
• JavaScript