Senior Full Stack Engineer

New York - Hybrid · Remotefull time

Apply on Employer Site

Remote

senior

$160k–$210k

H1B: no

Ellipsis Health The Senior Full Stack Engineer at Ellipsis Health builds backend services and APIs that connect AI agents to EHRs, scheduling, and phone systems in health systems. The role involves designing integrations, durable workflows, and shipping full stack features including UI components.

Responsibilities

Design, build, and operate backend services and APIs (TypeScript/Node.js and Python) that power our AI agents and the applications around them.
Build integrations with EHR and health system platforms using FHIR, HL7, and vendor APIs, so messy systems look simple to the rest of the platform.
Build the agent tools: the APIs and functions LLM agents call to look up patients, book appointments, and process refills, with the reliability, idempotency, and observability that requires.
Build and scale durable workflows and job pipelines (e.g., Temporal, queues) for outbound campaigns, scheduling, and reconciliation.
Evolve and scale our application architecture, data model, and persistence layer as we onboard more health systems.
Ship complete features across the stack, including React/TypeScript UI when needed.
Own production, including CI/CD, monitoring, alerting, incident response, runbooks, and HIPAA-grade security and audit logging.

Qualification

Strong API design skills (RESTCuriosity about LLMs and agentsHealthcare interoperability experienceTelephony or CPaaS experience (TwilioSalary and Benefits

Required

5+ years of experience building production backend systems in TypeScript/Node.js and/or Python.
Strong API design skills (REST, webhooks, async processing), along with relational databases (PostgreSQL) and distributed systems fundamentals.
Experience integrating third-party systems and handling rate limits, retries, and partial failures gracefully.
Experience with cloud and containers (GCP preferred; Docker; Cloud Run or Kubernetes).
Comfort shipping frontend work when a feature calls for it.
Curiosity about LLMs and agents. Experience building with them is a plus, and you'll get plenty of it here.

Preferred

Healthcare interoperability experience, including FHIR, HL7v2, and EHR vendor APIs.
Experience with Temporal or similar workflow orchestration.
Telephony or CPaaS experience (Twilio, SIP).
Experience building tools or MCP servers for LLM agents.
Security and compliance experience (HIPAA, SOC 2).
Salary and Benefits

Benefits

Dental
Vision
401(k)
Equity/RSU
Tuition

Company

Ellipsis Health

View company page

Source: ashby

Active within the past hour

Remote-friendly

More roles at Ellipsis Health

Senior ML Engineer, Agentic AI

San Francisco - Hybrid · Remote

Recruiting Coordinator

San Francisco - Hybrid · Remote

Product Manager, Analytics & Reporting

San Francisco - Hybrid · Remote

Senior Data Scientist

San Francisco - Hybrid · Remote