Real-Time JavaScript VoIP Engineer - Dial Pad & WebRTC

DCS Scaffolding; Salford; On-site; GBP 50,000 - 60,000; Full time

Job summary

A tech firm in Salford is seeking a JavaScript Software Engineer to lead the development of a robust telephony infrastructure. The role involves designing and integrating JavaScript-based dial pad UIs with PJSIP, alongside handling real-time communication concerns. Ideal candidates will have strong JavaScript skills, experience with VoIP, and proficiency in Linux environments. Competitive salary up to £60,000, along with benefits including annual leave and career development opportunities.

Benefits

Paid annual leave

Pension

Wellbeing perks

Career development opportunities

Qualifications

• Strong experience with JavaScript for both Node.js and browser applications.
• Hands-on experience with PJSIP / pjproject.
• Solid understanding of VoIP and SIP fundamentals.

Responsibilities

• Design and build a JavaScript-based dial pad UI using modern frameworks.
• Integrate the frontend dial pad with PJSIP backend services.
• Develop real-time event-driven systems supporting voice calling.

Skills

JavaScript

PJSIP / pjproject integration

VoIP fundamentals

WebRTC

Event-driven, real-time systems

Linux environments

Debugging skills

Tools

Wireshark

Asterisk

FreeSWITCH

Job description

A tech firm in Salford is seeking a JavaScript Software Engineer to lead the development of a robust telephony infrastructure. The role involves designing and integrating JavaScript-based dial pad UIs with PJSIP, alongside handling real-time communication concerns. Ideal candidates will have strong JavaScript skills, experience with VoIP, and proficiency in Linux environments. Competitive salary up to £60,000, along with benefits including annual leave and career development opportunities.