Bluebash - Telephony/VoIP Engineer - CPaaS/SIP

3 days ago


Sahibzada Ajit Singh Nagar, India Bluebash Full time

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)



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