About the Role
We are seeking a Head of Engineering, Receptionist to own Sully.ai’s voice agent. You will lead end-to-end velocity, reliability, and quality for telephony, ASR, dialog, and scheduling. Focus on Twilio or VoIP stability, low-latency accurate transcription in noisy medical calls, robust dialogue handling, conflict-free scheduling, and enterprise-grade EHR write-backs. Scale from thousands of practice admins to millions of patient interactions. Build the team and the platform.
About Us
Team from OpenAI, DeepMind, NASA, GoogleX, Tesla, and 2 physicians: 6 exits, 2 IPOs.
Our model outperforms Claude, Gemini, and GPT-4.5 on clinical benchmarks.
400+ healthcare orgs signed in 16 months.
⚡️ $25M raised from YC, Amity Ventures, Sequoia scouts, and more.
$1T+ market opportunity. We’re going after all of it.
Key Responsibilities
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Own voice stack architecture across telephony, ASR, TTS, diarization, dialog, and EHR write-back.
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Drive reliability and latency with SLAs, error budgets, incident response, and observability.
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Lead enterprise EHR integrations and multi-office configuration tooling for large practices.
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Build scheduling sync that is conflict free across EMRs and calendars.
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Hire, coach, and organize teams for platform, voice, SMS, integrations, and dashboard.
Hard Requirements
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7+ years engineering with 3+ years leading teams shipping real-time voice agents at scale.
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Deep telephony and realtime expertise across Twilio or SIP, WebRTC or gRPC, Kafka or queues.
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Strong ASR and TTS production experience and prompt or policy or routing for LLM agents.
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Proven CI or CD, Kubernetes, Docker, and cloud on GCP or AWS or Azure.
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Track record reducing p95 or p99 latency and raising correctness in production ML systems.
Nice-to-Have
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Healthcare data standards and EHR integrations across FHIR or HL7.
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Multilingual voice systems and medical terminology accuracy work.
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SRE or DevOps leadership and automated QA at safety bar.
First-Month Focus
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Establish latency, accuracy, and reliability baselines with dashboards and alerts.
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Stabilize telephony and scheduling: fix call drops, ASR in noise, double-booking, and sync drift.
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Define enterprise roadmap: Epic or Cerner integrations, multi-office tooling, and self-hosted UAE or KSA stack plan.
Success OKRs (90 Days)
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Reduce end-to-end p95 call handling latency by 40 percent and ASR WER on noisy calls by 30 percent.
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Achieve 99.9 percent successful scheduling writes with zero double-booking incidents in pilot cohorts.
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Ship one enterprise EHR integration to pilot and deliver a self-hosted deployment plan with security review.
Culture Fit
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Willing to push back on leadership to defend quality/timelines
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Thrives in high-ambiguity, fast-paced startup environments
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Zero to One Builder, self-managed and self-directed
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Persistent, driven problem solver. Loves getting in the trenches.
Why Join Sully.ai?
Shape the Future of Healthcare: Build category-defining partnerships that enable doctors to focus on saving lives.
Early-Stage Impact: Join early and play a critical role in shaping our partnership roadmap and overall company growth.
Remote-First Culture: Work with a talented, mission-driven team in a flexible, remote environment.
Competitive Compensation: Enjoy a competitive salary, equity, and the opportunity to make a real difference.
Solve Scalability Challenges: Tackle complex challenges in a rapidly growing company, driving impactful change in healthcare.
Sully.ai is an equal opportunity employer. In addition to EEO being the law, it is a policy that is fully consistent with our principles. All qualified applicants will receive consideration for employment without regard to status as a protected veteran or a qualified individual with a disability, or other protected status such as race, religion, color, national origin, sex, sexual orientation, gender identity, genetic information, pregnancy or age. Sully.ai prohibits any form of workplace harassment.