Lead Voice AI Engineer

Who We Are

Simpplr is the AI-powered intranet for unifying the digital workplace. It brings people, trusted knowledge, apps, and agents into a coherent digital experience. Powered by a proprietary EX Knowledge Graph, Simpplr synthesizes signals and context across connected systems to deliver personalized information and actions. The platform serves as a digital hub supporting communications, engagement, employee services, and work. With low-code extensibility and enterprise-grade security and governance, Simpplr enables confident operation at scale. More than 1,000 organizations — including AAA, the NHS, Penske, and Moderna — trust Simpplr to keep their workforce informed, aligned, and productive. Learn more at simpplr.com.

About the role

We are looking for a Lead Voice AI Engineer to build production-grade Voice Agents for frontline heavy verticals like healthcare, manufacturing, warehousing, retail, hospitality focusing on employee support, procurement, collections, logistics, ordering etc.

You will lead the design of low-latency, real-time voice systems combining ASR, TTS, LLMs, conversational AI, enterprise workflows, knowledge retrieval, compliance, and human handoff.

This is a hands-on technical leadership role for someone who can take Voice AI from architecture to production.

Responsibilities

• Design and build the real-time voice runtime for live conversations.
• Build and optimize streaming ASR, TTS, VAD, endpointing, turn-taking, and barge-in.
• Build adaptive voice pipelines for high-noise frontline environments (60-112 dB), hospitals, factory floors, warehouses, including server-side noise cancellation, echo suppression, and dynamic ASR/TTS optimization for PSTN and mobile phone audio quality.
• Architect multi-provider speech routing across a broad multilingual matrix, including code-switching (e.g., Spanglish, Hinglish), where no single ASR or TTS provider covers all languages, and language detection, provider selection, and fallback chains must operate in real time mid-call.
• Develop Voice Agents that support multi-turn, multi-intent conversations, context switching, clarification, and recovery.
• Integrate Voice Agents with workflows, APIs, CRM, ITSM, knowledge bases, and enterprise systems.
• Build secure identity verification, consent, privacy, audit, and compliance controls.
• Implement warm transfer, callback, queue routing, and seamless human handoff with full conversation context.
• Optimize multilingual voice quality across accents, noisy environments, latency, and naturalness.
• Build evaluation frameworks for WER, intent accuracy, response latency, containment, resolution, escalation, and CSAT.
• Establish production observability across the full call path: ASR → LLM → tools → TTS.
• Evaluate and integrate leading speech, telephony, and AI technologies.
• Define architecture, engineering standards, and production readiness for the Voice AI platform.
• Mentor engineers and lead critical technical design reviews.

Minimum qualifications

• 7+ years of software engineering experience.
• Strong experience building production distributed or real-time systems.
• Hands-on experience with Conversational AI, Voice AI, Speech AI, or LLM-based agents.
• Strong programming skills in Python, Java, Go, or equivalent.
• Experience with APIs, streaming systems, asynchronous architectures, and cloud-native platforms.
• Strong understanding of system design, scalability, reliability, and observability.

Preferred qualifications

• Hands-on experience with Deepgram for real-time ASR and streaming speech recognition.
• Hands-on experience with LiveKit for WebRTC, real-time audio, voice-agent runtime, and session orchestration.
• Hands-on experience with ElevenLabs for low-latency, natural TTS and conversational voice experiences.
• Experience with OpenAI, Azure Speech, Google Speech, or similar ASR/TTS technologies.
• Experience with WebRTC, SIP, RTP, WebSockets, Twilio, or contact-center platforms.
• Experience with LLM agents, tool calling, RAG, LangGraph, or similar orchestration frameworks.
• Experience integrating enterprise systems such as Salesforce, ServiceNow, Jira, Zendesk, or Workday.
• Experience with multilingual speech, accent handling, noisy environments, PII redaction, and call-recording controls.
• Experience building high-scale, multi-tenant SaaS platforms.

What success looks like

• Voice Agents feel natural and responsive in real-time conversations.
• Users can interrupt naturally and change context without breaking the conversation.
• The system works reliably across languages, accents, and noisy environments.
• Voice Agents securely execute enterprise workflows and grounded knowledge retrieval.
• Complex cases escalate to humans with full context.
• The platform meets measurable targets for latency, accuracy, reliability, containment, resolution, and customer satisfaction.

Engineering principle

Voice is not chat with audio. Voice is a real-time interaction model with different requirements for latency, interruption, identity, compliance, failure handling, and human handoff.