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Bluebash - Telephony / VoIP Engineer - CPaaS / SIP

Bluebash - Telephony / VoIP Engineer - CPaaS / SIP

ConfidentialNagar, Sahibzada Ajit Singh Nagar, India
7 days ago
Job description

Description

We are an AI Voice Agent startup building the next generation of intelligent, human-like voice assistants for businesses.

Our platform integrates with telephony systems, CCaaS / CPaaS providers, and modern AI technologies to deliver seamless customer experiences.

We are looking for a Telephony / VoIP Engineer who can accelerate our expertise in telephony infrastructure and voice technologies.

Key Responsibilities

  • Design, develop, and optimize telephony solutions integrating with Asterisk, FreeSWITCH, and other CPaaS platforms (Twilio, Vonage, Plivo, etc.
  • Architect scalable and reliable CCaaS / CPaaS workflows for inbound and outbound voice communication.
  • Collaborate with AI / ML engineers to integrate AI-driven voice agents with traditional and modern telephony stacks.
  • Troubleshoot and optimize call quality, latency, SIP / RTP handling, NAT traversal, and codec performance.
  • Build automation scripts, monitoring tools, and APIs in Python to manage and extend telephony systems.
  • Ensure compliance with VoIP standards and protocols (SIP, RTP, WebRTC, SRTP, DTMF, IVR).
  • Collaborate with product and infrastructure teams to deliver carrier-grade voice reliability.
  • Research and implement new technologies in voice processing, call analysis, and AI-driven telephony workflows.

Required Skills & Experience

  • 5+ years of experience in the Telephony / VoIP domain.
  • Deep knowledge of Asterisk, FreeSWITCH, and / or other open-source PBX systems.
  • Strong understanding of SIP, RTP, WebRTC, VoIP codecs (G.711, G.729, Opus, etc.), and telephony protocols.
  • Experience with CCaaS / CPaaS solutions (Twilio, Vonage, SignalWire, Plivo, etc.
  • Hands-on experience with Python for automation, API integration, and backend development.
  • Knowledge of call routing, IVR design, conferencing, and voicemail systems.
  • Familiarity with cloud environments (AWS, GCP, Azure) for deploying telephony systems at scale.
  • Solid troubleshooting skills in networking (SIP traces, Wireshark, NAT issues) and carrier to Have :
  • Experience with AI Voice, Speech-to-Text (STT), and Text-to-Speech (TTS) integration.
  • Exposure to Kafka, RabbitMQ, ActiveMQ, or other messaging systems for real-time call event handling.
  • Prior work in contact center solutions (CCaaS) or customer engagement platforms.
  • Contributions to open-source telephony projects

    • (ref : hirist.tech)

    Skills Required

    Opus, freeswitch, Kafka, Activemq, Rtp, g.711 , Rabbitmq, Gcp, twilio , Sip, Asterisk, Webrtc, Azure, plivo, Python, Aws

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