Job Title:
Staff Software Engineer, SMS/ RCS Team
Company: OneSignal
Location: San Mateo, CA
Created: 2026-04-20
Job Type: Full Time
Job Description:
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! One 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 to established companies such as Live Nation, American Express, Whole Foods, Zynga, , 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. We also provide work in the UK, Singapore and Canada, with plans to expand in the future. Some roles are hybrid and will be listed as such. We have offices in San"¯Mateo, CA and London, UK, and offer flexible 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 combines the best of tech"‘startup culture with the scale and stability of a larger company. Our massive scale, close"‘knit teams, focus on collaboration, ownership and personal growth make OneSignal a uniquely great place to work. 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 building an industry"‘leading RCS"‘rich content editor that empowers brands to create dynamic, interactive experiences that truly connect with their audiences. As a Staff Software Engineer you will help shape the future of messaging, taking ownership of end"‘to"‘end projects that require developing in multiple languages across the stack. Your skills in performance, user experience and maintainability will be critical to success. 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 an 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 systems 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. Not Required but Would Be a Bonus Experience with event streaming frameworks such as Apache Kafka. Additional 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 Canada base salary for a Staff Software Engineer full"‘time position is between CAD $225,000 and CAD $255,000. 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 or harassment based on race, color, ancestry, national origin, religion, age, gender, marital domestic partner status, sexual orientation, gender identity, disability status or veteran status. 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 otherwise participating in the application and/or interview process. OneSignal collects and processes personal data submitted by job applicants in accordance with our Privacy Policy"”including GDPR and CCPA compliance. Please see our privacy notice for job applicants. #J-18808-Ljbffr