Software Engineer; Voice services​/JAIN SLEE

Job Title:

Software Engineer (Voice services/JAIN SLEE)
Role Type:
Contract

We are seeking a Voice Services Developer to build, maintain, and optimize next-generation communication platforms by bridging telecommunication protocols with cloud-based AI.

• SIP Development:
  Develop, test, and maintain SIP-based voice services using Java, JAIN SLEE, and SIP Servlets.
• Media Server Administration:
  Configure, manage, and scale Free SWITCH or Asterisk communication engines.
• Speech AI Integration:
  Implement STT, TTS, and NLP workflows into live voice streams.
• Cloud Operations:
  Deploy and monitor voice applications across AWS, Azure, and GCP.
• Troubleshooting:
  Use network analysis tools to diagnose audio quality issues, call drops, and latency problems.
• Team
  
  Collaboration:
  
  Work alongside architects and Dev Ops teams to roll out scalable conversational AI bots.

• Core Java:
  Professional Java experience, including multi-threading, network programming, JAIN SLEE, and SIP Servlet frameworks.
• Telephony Engines:
  Hands-on experience configuring and scripting with Free SWITCH or Asterisk.
• Voice Protocols:
  Solid understanding of SIP, RTP/RTCP, and SDP.
• Speech AI:
  Experience integrating cloud speech APIs (e.g., AWS Transcribe/Polly, Azure Speech, GCP Speech-to-Text).
• Multi-Cloud:
  Experience deploying and managing applications on AWS, Azure, and GCP.
• Tools:
  Proficiency with Wireshark or sngrep for VoIP troubleshooting.

• Experience with Metaswitch Rhino SLEE or Oracle OCCAS.
• Understanding of Docker, Kubernetes, WebRTC, and telephony security standards (TLS/SRTP).