Senior AI Agent Engineer - Healthcare Platforms

Ellipsis Health; New York (NY); On-site; USD 160,000 - 210,000; Full time

Benefits offered by this job

Health, dental, Vision insurance

401(k) plan

Learning budget / conferences

Job summary

Ellipsis Health is hiring a Senior Software Engineer to build AI agents patients actually talk to. You will own agents end to end, from conversation design to tool calling and evals, shipping production-grade solutions for health system partners.

You will collaborate with product, clinical, deployment, and commercial teams to deliver reliable, scalable agent workflows and a fast, safe user experience. This is a hands-on, production-focused role in a fast-growing health-tech company.

Qualifications

• 5+ years of professional software engineering experience.
• 1+ year building and shipping LLM-powered applications in production.
• Strong Python and/or TypeScript, backend APIs and data.
• Clear written and verbal communication with technical and non-technical teammates.

Responsibilities

• Design, build, and ship AI agents end to end, including conversation flows, prompts, tool and function calling, retrieval, memory, and the backend services agents depend on.
• Build evaluation systems (offline test suites, simulated conversations, human review loops, and production monitoring) to ensure an agent is good before and after it ships.
• Improve instruction following, tool-calling reliability, latency, and cost across our LLM and speech stack.
• Help design and build our next-generation voice agent platform, choosing models and architecture for each task by quality, latency, and cost.
• Partner with clinical, product, and customer teams to turn workflows like scheduling, refills, billing, and post-discharge check-ins into reliable agent behavior.
• Dig into real conversations and failure cases, and close the loop with prompt, tool, model, or product changes.
• Build internal tools to observe, monitor, and analyze agent behavior at scale to identify failure modes and patterns.
• Track what's new in models and tooling, and bring useful parts into production quickly.

Skills

Python

TypeScript

LLM-powered apps

Prompting

Tool orchestration

Tools

Temporal

Twilio

FHIR

WebRTC

Job description

Ellipsis Health is hiring a Senior Software Engineer to build AI agents patients actually talk to. You will own agents end to end, from conversation design to tool calling and evals, shipping production-grade solutions for health system partners.

You will collaborate with product, clinical, deployment, and commercial teams to deliver reliable, scalable agent workflows and a fast, safe user experience. This is a hands-on, production-focused role in a fast-growing health-tech company.