Salary: £65,000 - 65,000 per year Requirements: Software Developer or similar role Understanding of SIP / VoIP and real-time systems Experience with REST APIs, Docker, and Linux Ability to commute to Guildford Responsibilities: Develop and improve a SIP / VoIP communications platform Integrate external systems, including AI-based voice services Troubleshoot SIP/RTP issues using tools such as Wireshark Ensure secure software design and compliance standards Technologies: AI Docker Linux REST Backend Python Web More: We are an award-winning technology business with over 40 years of industry experience, renowned for our innovation and commitment to in-house development and long-term customer partnerships. We provide excellent training, exposure to cutting-edge technologies, and clear opportunities for progression within our small, highly skilled development team. This hybrid position is based in Guildford and offers a competitive salary ranging from £60,000 to £65,000, along with company benefits. last updated 5 week of 2026