Senior Web Developer
TextNow, Inc., Waterloo, ON +1
- Pay
- $113K–$162K / year
- Work type
- Not stated
- Level
- Senior
- Area
- Software engineering
- Posted
- May 8, 2026
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About the role
We believe communication belongs to everyone. We exist to democratize phone service. TextNow is evolving the way the world connects and that's because we're made up of people with curious minds who bring an optimistic, yet critical lens into the work we do. We're the largest provider of free phone service in the nation. And we're just getting started.
Join us in our mission to break down barriers to communication and free the flow of conversation for people everywhere.
TextNow is looking for an experienced Senior Web Developer to play a key role in the development of our voice and messaging platform on Web. You will be responsible for building high-performance, scalable, and feature-rich mobile applications that integrate voice, video, and messaging capabilities. You will work alongside a talented team of developers, product managers, and UX/UI designers to create intuitive and user-centric experiences.
What You'll Do
- Design, develop, and maintain a high-quality Web application focused on voice and messaging features (voice calling, chat, real-time notifications, etc.).
- Write clean, maintainable and testable Web applications in Javascript using the latest programming techniques and frameworks
- Collaborate with cross-functional teams to define, design, and ship new features.
- Work with real-time communication protocols, such as WebRTC, SIP, and related messaging and voice frameworks.
- Optimize app performance to ensure smooth voice and messaging functionality, including audio quality, latency, and bandwidth usage.
- Troubleshoot and debug issues related to performance, crashes, and other bugs, ensuring a smooth and stable user experience.
- Own problems and solutions end-to-end, from ideation to deployment
- Experimentation is a key part of your workflow; be data-driven and make the right decisions for our customers
- Deploy your features to millions of users - your work will have an immediate impact.
Who You Are
- A professional Web developer with 5+ years of experience with web app development.
- Experience in Javascript, HTML and CSS, with a deep understanding of web frameworks (React, Marionette).
- Bonus points for experience with real-time communication protocols and technologies like WebRTC, SIP, or similar.
- Knowledge of desktop notifications and managing network connections for real-time updates.
- Familiarity with modern web development tools, Instruments, and the debugging process.
- Understanding of user experience (UX) principles, with the ability to design elegant, simple solutions for complex problems.
- Experience with automated testing frameworks (Unit, UI, Integration testing).
The expected base salary range for this role is:
Canada Intermediate: CAD $113,400 - $162,000 annually
Canada Senior: CAD $158,000 – 207,000 annually
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Listed on TextNow, Inc.'s Greenhouse job board; checked 3 h ago. First seen by us 30 h ago. Being listed doesn't mean the team is actively interviewing. We found this board in a public directory and haven't yet confirmed it against the company's own careers page.