Software Engineer/Developer - Voice Services in Ipswich

Job Description\n

Software Engineer/Developer - Voice Services

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Flint are currently seeking a Software Engineer/Developer to build, maintain, and optimize our client's next- communication platforms. You will bridge the gap between traditional telecommunication protocols and modern cloud-based AI.

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Your core focus will be developing stable SIP services using Java, managing open-source media engines, and integrating advanced Speech AI technologies across multi-cloud environments.

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Key Responsibilities

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• SIP Development: Develop, test, and maintain mid-to-high performance SIP-based voice services using JAIN SLEE, SIP Servlets.

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• Media Server Administration: Configure, manage, and scale FreeSWITCH or Asterisk communication engines.

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• Speech AI Integration: Implement Speech-to-Text (STT), Text-to-Speech (TTS), and Natural Processing (NLP) workflows into live voice streams.

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• Cloud Operations: Deploy and monitor voice applications across AWS, Azure, and Google Cloud Platform (GCP).

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• Troubleshooting: Use network analysis tools to diagnose audio quality issues, call drops, and latency problems.

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• Team Collaboration: Work alongside senior architects and DevOps teams to roll out scalable conversational AI bots.

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Required Skills & Qualifications

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• Core : Professional experience with Java, including multi-threading and network programming.

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• In depth knowledge of Java

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• Good knowledge of Java applications using JAIN SLEE framework, SIP Servlet Frameworks

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• Telephony Engines: Hands-on experience configuring and Scripting with FreeSWITCH or Asterisk.

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• Voice Protocols: Solid understanding of SIP, RTP/RTCP, and SDP.

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• Speech AI: Experience integrating cloud speech APIs (eg, AWS Transcribe/Polly, Azure Speech, Google Cloud Speech-to-Text).

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• Multi-Cloud Exposure: Experience deploying and managing applications on AWS, Azure, and GCP.

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• Tools: Proficiency with Wireshark or sngrep for VoIP troubleshooting.

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Qualifications

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• Experience with Java telephony frameworks like Metaswitch Rhino SLEE or Oracle OCCAS.

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• Understanding of containerisation using Docker and Kubernetes in cloud environments.

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• Knowledge of WebRTC and telephony security standards like TLS and SRTP.

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