2622 IT & Software Developer jobs in the UK

SER Limited jobs

Senior Developer

£30,000 - 55,000
SER Limited
Guildown Road, Guildford
£30,000 - 55,000
Company Size icon
Company Size
50-200
Company Type icon
Company Type
Services
Exp Level icon
Exp Level
Senior
Job Type icon
Job Type
Full-Time
Language icon
Language
English
Visa sponsorship icon
Visa sponsorship
No

Requirements

Must:
- Strong SIP / VoIP protocol knowledge (SIP, SDP, RTP) - 5+ years’ experience with Python or another OO language - Experience with REST APIs, Flask/Django and secure systems development - Proficiency in Linux (Ubuntu), Docker, and Git-based workflows - Familiarity with Wireshark for SIP/RTP troubleshooting - Excellent communication skills - Desirable: Experience with FreeSWITCH, Kamailio or WebRTC - Desirable: Knowledge of C/C++, OAuth2/Auth0 - Desirable: Familiarity with CI/CD, Kubernetes, MongoDB or MySQL

Responsibilities

- Design, develop and enhance a SIP/VoIP platform and associated services - Build REST APIs and value-add services - Integrate with external systems including AI-driven voice, transcription and analytics services - Troubleshoot SIP/RTP issues and improve platform reliability - Contribute to secure development practices and compliance (ISO27001, PCI-DSS)

Description


We are an established technology business based in Guildford, offering a hybrid working model. We provide a competitive salary of £55,000 – £65,000, depending on experience. Our benefits include 24 days’ holiday plus bank holidays, a pension scheme, life insurance, private medical coverage, as well as additional perks like a birthday and volunteering day off, discounts, and a Cycle to Work scheme. Join our small, specialist software team and help us evolve an enterprise-level SIP platform.
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