Senior Web Developer
TextNow
hybridseniorpermanentfrontend United States Today via LinkedIn
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JavaScriptReactWebRTCSIPReal-time communicationHTMLCSSPerformance OptimizationAutomated TestingUX
About the role
Role overview
TextNow is seeking an experienced Senior Web Developer to help build and maintain its voice and messaging platform on the Web. You’ll work with developers, product managers, and UX/UI designers to deliver intuitive, user-centric experiences for real-time communication.
Responsibilities
- Design, develop, and maintain a high-quality Web application for voice and messaging features (voice calling, chat, real-time notifications, etc.)
- Write clean, maintainable, and testable Web applications in JavaScript using modern techniques and frameworks
- Collaborate cross-functionally to define, design, and ship new features
- Work with real-time communication protocols and stacks such as WebRTC, SIP, and related messaging/voice frameworks
- Optimize performance for voice and messaging (audio quality, latency, and bandwidth usage)
- Troubleshoot and debug issues (performance, crashes, and other bugs) to ensure a smooth, stable experience
- Own problems and solutions end-to-end (from ideation through deployment)
- Be data-driven and support decisions through experimentation
- Deploy features to millions of users and monitor impact
Requirements
- 5+ years of web application development experience
- Strong web fundamentals: JavaScript, HTML, CSS
- Experience with web frameworks, specifically React and Marionette
- Familiarity with desktop notifications and managing network connections for real-time updates
- Experience with modern web development tools and the debugging process
- Understanding of UX principles and ability to design simple solutions to complex problems
- Experience with automated testing (Unit, UI, Integration testing)
Nice to have
- Experience with real-time communication protocols/technologies such as WebRTC and SIP
About TextNow
TextNow is a communications technology company focused on democratizing phone service. It provides free phone service at scale and is building a voice and messaging platform that supports real-time communication features like calling, chat, and notifications.
Scraped 4/12/2026