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# Web Developer

- **Company:** Textnow Inc.
- **Location:** New York, NY, United States
- **Experience:** Expert
- **Salary:** $113,400.0 - $161,999.0
- **Contract:** Permanent contract
- **Skills:** HTML, JavaScript (Programming Language), Application Performance Management, Software Debugging, Mobile Application Software, Network Connections, Web Applications, Web Application Frameworks, WebRTC, ReactJS, Integration Tests, Data Analytics, Marionette
- **Published:** September 4, 2026
- **Apply:** https://startup.jobs/senior-web-developer-textnow-inc-8344730

## About the Role

* 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).

## Description

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.


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