Senior Software Engineer - Voice AI Platform

Parlance; Milton (MA); Remote; USD 140,000 - 190,000; Full time

Job summary

Parlance is seeking a senior software engineer to own end-to-end development of a modern voice AI platform. You will work on telephony, real-time media, orchestration, and APIs, shaping the future of our healthcare voice agents.

You will design, implement, and deploy features across the stack, including CCaaS connectivity, backend services in Python, and front-end dashboards. A strong background in real-time systems and LLM integration is essential.

Qualifications

• 6+ years shipping production software
• Strong Python and full-stack experience
• Experience with real-time voice/telephony stacks
• LLM integration experience in production
• Strong debugging and ambiguity tolerance

Responsibilities

• Design and build real-time voice agents on Tensor/real-time stacks
• Own features across stack: telephony/CCaaS, backend services, dashboards
• Integrate agents with healthcare systems via FHIR-based APIs
• Debug production issues: audio quality, call flows, distributed systems
• Set up evaluation and observability for voice agents
• Contribute to architecture decisions and code reviews
• Collaborate with product and customers to translate requirements into shipped software

Skills

Python

Real-time frameworks

WebRTC

SIP

LLM integration

Tools

Azure

React

TypeScript

CI/CD

Job description

Job Summary:

Parlance builds conversational voice AI for healthcare — patient-facing agents that answer calls, verify identity, schedule, and reach into EHRs like Epic, Cerner, Meditech, and Athena to get things done. We are looking for a senior full-stack engineer who has shipped on a modern voice agent stack and can own problems end to end: from telephony and real-time media, through orchestration and LLM logic, to the APIs and data services behind it.
This is not a narrowly scoped integrations role. You will be one of the engineers shaping how our next-generation voice platform is built.

Job Description

Senior Software Engineer – Voice AI Platform

Parlance | Woburn, MA (remote) | Full-time

About the role

Parlance builds conversational voice AI for healthcare — patient-facing agents that answer calls, verify identity, schedule, and reach into EHRs like Epic, Cerner, Meditech, and Athena to get things done. We are looking for a senior full-stack engineer who has shipped on a modern voice agent stack and can own problems end to end: from telephony and real-time media, through orchestration and LLM logic, to the APIs and data services behind it.

This is not a narrowly scoped integrations role. You will be one of the engineers shaping how our next-generation voice platform is built.

What you’ll do

• Design and build real-time voice agents on frameworks such as Pipecat, LiveKit Agents, or comparable platforms — STT/TTS pipelines, turn‑taking, interruption handling, latency tuning
• Own features across the stack: telephony/CCaaS connectivity (SIP, WebRTC, Five9/Webex CC), backend services in Python, and the internal tools and dashboards the team runs on
• Build and extend the services that connect agents to healthcare systems — FHIR‑based EHR integrations, scheduling, and patient data access — with the security and reliability healthcare demands
• Debug hard problems in production: audio quality, call flow failures, model behavior, and distributed‑system issues across cloud, telephony, and third‑party APIs
• Set up evaluation and observability for voice agents so we know when they are working and when they are not
• Contribute to architecture decisions, review code, and raise the bar for the team
• Work directly with product, customer success, and customers to turn ambiguous requirements into shipped software

What we’re looking for

• 6+ years building production software, with strong depth in Python and comfort across backend, frontend, and infrastructure
• Hands‑on experience building voice agents on Pipecat, LiveKit, Vapi, Retell, Daily, or a similar real‑time framework — you have dealt with barge‑in, latency budgets, and flaky audio, not just a demo
• Working knowledge of real‑time media and telephony: WebRTC, SIP, audio codecs, streaming STT/TTS (Deepgram, ElevenLabs, Cartesia, Azure Speech, or similar)
• Experience integrating LLMs into production systems — prompt design, function calling, structured outputs, evals
• Solid engineering fundamentals: API design, testing, CI/CD, containers, cloud deployment (Azure preferred; AWS/GCP fine)
• Strong debugging instincts and the ability to work through ambiguity without waiting for a spec
• Clear written and verbal communication

Nice to have

• Healthcare integration experience: FHIR, HL7, EHR APIs, HIPAA‑aware engineering
• Contact center platform experience (Five9, Genesys, Webex CC, Amazon Connect)
• Experience with CCaaS/IVR migration or replacing legacy speech platforms
• Frontend experience with React/TypeScript for Web Portal

Why Parlance

Small, senior engineering team with real ownership. Real patients on the other end of every call. Backed by Constellation Software, so the stability of a large company with the pace of a small one.

Compensation & eligibility

Candidates must be authorized to work in the United States; we are unable to sponsor employment visas now or in the future.

Worker Type

Regular

Number of Openings Available

1