TextNow
Senior Web Developer
$113K–$212K
San Francisco, CA +1 · Senior · Full-time · Posted May 8, 2026
- Location
- San Francisco, CA
Open- Canada - Experience
- 5+ years of web app development experience.
About the job
Develop and maintain TextNow’s web voice and messaging application, delivering performant real-time calling, chat, and notification features.
What you'll do
- Build, maintain, and optimize web features for voice and messaging, including performance, audio quality, latency, and bandwidth.
- Collaborate with cross-functional teams to design and ship features; own work from ideation through deployment.
- Troubleshoot and debug application issues and use experimentation and data to guide decisions.
What they ask for
- 5+ years of web application development experience.
- Experience with JavaScript, HTML, CSS, and web frameworks including React and Marionette.
- Knowledge of desktop notifications and managing network connections for real-time updates.
- Experience with automated testing frameworks, including unit, UI, and integration testing.
Nice to have
- Experience with real-time communication technologies such as WebRTC or SIP.
- Familiarity with modern web development tools, Instruments, and debugging.
Pay
$113,400 - $161,999 a year (currency not stated; salary type not stated); CAD 113,400 - 162,000 (salary type not stated); USD 123,900 - 177,000 (salary type not stated); USD 136,380-194,700 (salary type not stated); USD 148,700 -212,400 (salary type not stated)
Tools
Javascript, HTML, CSS, React, Marionette, WebRTC, SIP
Model-written summary · the original posting is authoritative