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Voice Infrastructure Engineer [3 Days Left]
Simetrix SolutionsDelhi, Delhi, India2 days ago
Job descriptionML-optimized pacing algorithms for maximum agent productivity Advanced Call Progress Analysis (CPA) with 95%+ accuracy TCPA-compliant outbound calling with real-time abandonment rate control Multi-provider SIP trunk architecture (Twilio, Bandwidth, Telnyx) Session Border Controller (SBC) implementation for security and QoS Browser-based WebRTC softphones for agents TLS / SRTP encryption and fraud prevention Real-time monitoring dashboards (MOS, latency, jitter, packet loss) Codec negotiation and transcoding (G.711, G.729, Opus) RTCP analysis and quality alerting systems Deep knowledge of SIP protocol, RTP / SRTP, and VoIP fundamentals Experience with WebRTC and real-time communications Proficiency in Node.js / TypeScript or Go / Rust for high-performance systems Hands-on experience with Twilio, Bandwidth, or similar SIP trunk providers Understanding of audio codecs, QoS, and network protocols Experience building or implementing IVR systems Knowledge of predictive / progressive dialers and pacing algorithms Understanding of ASR, NLU, and TTS technologies (Deepgram, AssemblyAI, ElevenLabs) Familiarity with call routing, skills-based distribution, and ACD systems Proven ability to design highly available, fault-tolerant voice systems Experience with multi-region deployment and redundancy strategies Knowledge of PostgreSQL / TimescaleDB, Redis, and distributed systems Cloud infrastructure experience (AWS, GCP, or Azure) Understanding of TCPA, FCC regulations, and DNC requirements Experience implementing TLS / SRTP encryption and security best practices Knowledge of fraud detection and prevention mechanisms Experience with ML / AI integration for voice analytics and optimization Contributions to open-source telephony projects (FreeSWITCH, Asterisk, Janus) Background in speech analytics, sentiment analysis, or voice biometrics Experience with Homer SIP capture, Prometheus / Grafana, or voice monitoring tools Knowledge of STIR / SHAKEN and robocall mitigation Your resume highlighting relevant VoIP / telephony experience A brief note about the most complex voice system you've built Links to any public projects or GitHub repos (if available)
About the Role
We're building the future of contact center communications, and we're looking for an exceptional Voice Infrastructure Engineer to architect and implement enterprise-grade voice technologies that will power thousands of customer interactions daily.
If you're passionate about real-time communications, VoIP, and creating seamless voice experiences at scale, this is your opportunity to make a massive impact.
What You'll Build
You'll be the technical architect behind the complete voice infrastructure stack, including :
Intelligent IVR Systems
- Conversational AI-powered self-service using modern ASR / NLU / TTS engines
- Integration with Deepgram Nova-2, Claude Sonnet 4, ElevenLabs Turbo
- Dynamic call flow orchestration with 60-80% containment rates
Predictive Dialer Platform
SIP Trunking & WebRTC Infrastructure
Voice Quality Optimization
What We're Looking For
Technical Expertise :
Contact Center Technologies :
Architecture & Scale :
Compliance & Security :
Bonus Points
What You'll Get
✅ Autonomy & Ownership - You'll architect and build our voice infrastructure from the foundation up
✅ Cutting-Edge Tech Stack - Work with the latest in AI, voice, and real-time communications
✅ Impact at Scale - Your work will power millions of customer conversations
✅ Collaborative Team - Work alongside talented engineers who value innovation and quality
✅ Growth & Learning - Exposure to emerging technologies in conversational AI and voice automation
✅ Competitive Compensation - comprehensive benefits, and flexible work arrangements
How to Apply
If you're excited about building the future of voice communications and want to work on challenging, impactful problems, we'd love to hear from you!
Send us :
Email : careers@simetrix-solutions.com
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Infrastructure Engineer • Delhi, Delhi, India
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