Senior Full Stack Engineer

Ellipsis Health

. Design, build, and operate backend services and APIs in TypeScript/Node.js and Python .

Posted 11/6/2026full-timeNew York City • New York • United StatesSenior💰 $160,000 - $210,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and operating backend services and APIs using TypeScript/Node.js and Python, with a strong focus on healthcare interoperability and security compliance. Proficient in designing scalable application architectures and integrating third-party systems within health systems.

Highest-signal resume keywords

TypeScript/Node.js Backend DevelopmentPython Backend DevelopmentAPI Design (REST, Webhooks, Async Processing)Healthcare Interoperability (FHIR, HL7)CI/CD and Production Operations

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

TypeScriptNode.jsPythonAPI DesignPostgreSQLDistributed SystemsCloud (GCP)DockerKubernetesTemporal

Soft Skills

CuriosityCollaboration

Tools & Technologies

EHR SystemsCloud RunTwilioSIP

Certifications & Qualifications

HIPAA ComplianceSOC 2 Compliance

Industry Keywords

Healthcare InteroperabilityEHR IntegrationWorkflow OrchestrationIntegration Tooling

Tech Stack

Tools & technologies

CloudDistributed SystemsDockerGoogle Cloud PlatformJavaScriptKubernetesNode.jsPostgresPythonReactTypeScript

About the role

Key responsibilities & impact

Design, build, and operate backend services and APIs in TypeScript/Node.js and Python
Build integrations with EHR and health system platforms using FHIR, HL7, and vendor APIs
Build APIs and functions that LLM agents use to look up patients, book appointments, and process refills
Build and scale durable workflows and job pipelines for outbound campaigns, scheduling, and reconciliation
Evolve and scale application architecture, data model, and persistence layer as health-system adoption grows
Ship complete features across the stack, including React/TypeScript UI when needed
Own production operations, including CI/CD, monitoring, alerting, incident response, runbooks, HIPAA-grade security, and audit logging
Ship at least one major EHR or health-system integration from specification to go-live within the first three months
Own a core platform service in production and build reusable integration tooling
Partner with AI engineering, product, deployment, and customer teams

Requirements

What you’ll need

5+ years of experience building production backend systems in TypeScript/Node.js and/or Python
Strong API design skills (REST, webhooks, async processing)
Experience with relational databases, especially PostgreSQL
Distributed systems fundamentals
Experience integrating third-party systems and handling rate limits, retries, and partial failures
Experience with cloud and containers (GCP preferred; Docker; Cloud Run or Kubernetes)
Comfort shipping frontend work when needed
Curiosity about LLMs and agents
Healthcare interoperability experience, including FHIR, HL7v2, and EHR vendor APIs preferred
Experience with Temporal or similar workflow orchestration preferred
Telephony or CPaaS experience (Twilio, SIP) preferred
Experience building tools or MCP servers for LLM agents preferred
Security and compliance experience (HIPAA, SOC 2) preferred

Benefits

Comp & perks

Meaningful equity
Comprehensive health, dental, and vision insurance
401(k) plan
Learning budget
Conferences
Additional benefits