2264 IT & Software Developer jobs in the UK
JavaScript Software Engineer
£50,000 - 60,000
DCS Recruitment Limited
Haddon Road, Salford
£50,000 - 60,000
Requirements
Must:
- Strong JavaScript experience (Node.js and/or browser-based applications).
- Hands-on experience integrating PJSIP / pjproject via backend services or bindings.
- Solid understanding of VoIP fundamentals, including SIP, SDP, RTP/RTCP, codecs, and DTMF.
- Experience working with WebRTC and SIP interoperability.
- Proven ability to design and implement responsive, user-friendly dial pad interfaces.
- Experience building event-driven, real-time systems using WebSockets and asynchronous workflows.
- Familiarity with SIP servers such as Asterisk or FreeSWITCH.
- Strong debugging skills across signalling and media layers.
- Comfortable working in Linux environments.
- Good understanding of security principles relevant to VoIP and real-time communications.
Responsibilities
- Design and build a JavaScript-based dial pad UI, using modern frameworks such as React, Vue, or vanilla JavaScript.
- Integrate the frontend dial pad with a backend PJSIP / pjproject SIP stack via services or bindings.
- Develop and maintain real-time, event-driven systems supporting voice calling and signalling.
- Work with WebRTC and ensure effective interoperability with SIP-based systems.
- Handle real-time audio concerns including microphone input, speaker output, echo cancellation, and latency optimisation.
- Collaborate on the design and implementation of SIP call flows, media handling, and call state management.
- Debug SIP signalling and media streams using tools such as Wireshark and SIP trace utilities.
- Ensure systems are secure, implementing best practices around TLS, SRTP, and authentication.
- Deploy and support services in Linux-based environments, ensuring stability and performance.
- Produce and maintain clear technical documentation aligned with development standards and change processes.
Description
We are DCS Technology, seeking a JavaScript Software Engineer to join our team in Salford. This permanent, full-time position offers a competitive salary of up to £60,000, negotiable based on experience. Our company is committed to your career development, providing opportunities to grow as we expand rapidly across multiple sectors. We also offer benefits including paid annual leave, a pension, and wellbeing perks. Join us in delivering cutting-edge telephony infrastructure and be a part of an innovative team.
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You can find Java Developer salaries in the UK here.
How many Java Developer jobs are in the UK?
Currently, there are 2264 Java openings. Check also: Kotlin jobs, Scala jobs, Spring jobs - all with salary brackets.
Is the UK a good place for Java Developers?
The UK is one of the best countries to work as a Java Engineer. It has a vibrant startup community, growing tech hubs and, most important: lots of interesting jobs for people who work in tech.
Which companies are hiring for Java Developer jobs in the UK?
Mas & Pas Limited, Bluefruit Software Limited, Roke Manor Research Limited, FCDO Services, Masters of Mystery, Phoenix Group, Access4 among others, are currently hiring for Java roles in the UK.
The company with most openings is Experis as they are hiring for 101 different Java Developer jobs in the UK. They are probably quite committed to find good Java Developers.
The company with most openings is Experis as they are hiring for 101 different Java Developer jobs in the UK. They are probably quite committed to find good Java Developers.