https://jobs.co.uk/job/software-engineering-specialist-voicejain-slee-randstad-technologies-recruitment--7f996c8e-786c-4d30-a13b-d83b8466a776 RSS feed for Software Engineering Specialist (Voice/JAIN SLEE) at Randstad Technologies Recruitment. en-gb Wed, 26 Aug 2026 20:01:03 GMT https://jobs.co.uk/job/software-engineering-specialist-voicejain-slee-randstad-technologies-recruitment--7f996c8e-786c-4d30-a13b-d83b8466a776 https://jobs.co.uk/job/software-engineering-specialist-voicejain-slee-randstad-technologies-recruitment--7f996c8e-786c-4d30-a13b-d83b8466a776 Tue, 25 Aug 2026 23:00:00 GMT Location: Ipswich | Salary: £300 - £350/day | Type: Contract | I am currently seeking a Voice Services Developer for an exciting project with an enterprise voice development team. Given your strong background in Java and telephony systems, I thought this might be a great fit. Quick Highlights: Focus: Developing, testing, and maintaining mid-to-high performance SIP-based voice services using Java (JAIN SLEE, SIP Servlets) and integrating advanced Speech AI technologies across multi-cloud environments. Environment: Agile, cross-functional delivery unit configuring media engines like FreeSWITCH or Asterisk, analyzing network traffic, and deploying conversational AI bots alongside senior architects and DevOps teams. Requirements: Professional Java experience (including multi-threading and network programming), hands-on scripting with FreeSWITCH or Asterisk, deep knowledge of voice protocols (SIP, RTP/RTCP, SDP), and experience with cloud Speech APIs (AWS, Azure, GCP) and Wireshark/sngrep. This is an urgent vacancy where the hiring manager is shortlisting for an interview immediately. If interested, please share your updated CV with me at manisha. devaruppala @ randstad (url removed), and let''s coordinate a brief call to discuss furth... Contract