Senior Front-End & FHIR Interoperability Engineer

RXinsider LTD.; New Jersey; Hybrid; USD 140,000 - 190,000; Full time

Benefits offered by this job

Flexible work arrangement

Collaborative engineering team

Hybrid/Remote options

Job summary

RXinsider LTD. is building a new engineering team to develop and scale a modern, cloud-native healthcare technology platform.

The role focuses on end-to-end front-end development, EHR integrations, and SMART on FHIR launches, with a strong emphasis on mapping clinical data to UI models. You will own the front-end, implement EHR integrations and CDS Hooks, and work to ship polished production front-end code within a fast-moving, early-stage environment.

Qualifications

• 6+ years of software engineering experience building production front-end apps in React/TypeScript.
• Hands-on experience integrating with EHR/EMR systems.
• Experience shipping a production SMART on FHIR app.
• Working knowledge of FHIR R4 and OAuth 2.0/PKCE.
• Hands-on CDS Hooks implementation experience.
• Experience handling PHI in a HIPAA environment.

Responsibilities

• Build and maintain the complete front-end application and all workflows from initial build to production support.
• Implement SMART on FHIR launch and consume FHIR R4 resources under read-only constraints, aligned to USCDI v3.
• Develop and own EHR/FHIR data mappings to the UI model.
• Create reusable integration patterns to support future EHR connections.
• Collaborate with Product, QA, and Engineering to deliver secure, reliable software.

Skills

React

TypeScript

Frontend architecture

FHIR Interoperability

EHR Integration

OAuth 2.0 PKCE

USCDI v3

Tools

React

TypeScript

FHIR R4

CDS Hooks

OAuth 2.0 PKCE

Job description

Location: Hybrid / Remote

Employment Type: Full-Time

About The Opportunity

We are building a new engineering team to develop and scale a modern, cloud-native healthcare technology platform. The work sits at the intersection of clinical software and healthcare interoperability.

This is an early-stage opportunity to shape a high-impact product from the ground up, backed by an experienced leadership team with deep healthcare-technology expertise. You will help set the technical foundations the platform is built on and see your work reach real users in clinical settings.

Position Summary

We are seeking a Senior Front-End & FHIR Interoperability Engineer to build and own a healthcare application end-to-end. This is a hands-on builder role for someone who is first and foremost a strong front-end engineer, and who has real, practical experience integrating with EHR systems and building SMART on FHIR applications.

You will write the production front-end code, build and maintain the application, implement the EHR integrations and SMART on FHIR launch, and own the mapping between clinical data and the user interface. You should be equally comfortable reasoning about interoperability constraints and shipping polished production front-end code.

What You’ll Own

• The front-end application end-to-end — you build it, and you maintain it.
• The integration between EHR systems and the application: EHR-embedded launch, secure authentication (OAuth 2.0 with PKCE), and session handling.
• The mapping layer: translating clinical data from EHR/FHIR sources into the internal model and the fields the UI needs. This is where interoperability meets the front end, and it is the heart of the role.
• Reusable integration patterns that let the platform scale to additional EHR connections over time.

Key Responsibilities

• Build and maintain the complete front-end application and every workflow screen — from first build through ongoing iteration and production support.
• Build and maintain SMART on FHIR application launch and consume FHIR R4 resources under a read-only constraint, aligned to USCDI v3.
• Implement CDS Hooks integrations and drug-in-context triggering.
• Design and own the data mapping between EHR/FHIR resources and the application model and UI.
• Build clean, fast front-end views that surface mapped clinical data and keep the coordinator work queue legible under load.
• Contribute production-quality code and participate in design and code reviews with the engineering team.
• Partner with Product, QA, and the engineering team to deliver secure, reliable, maintainable software.
• Build to the platform guardrails.

Technology Environment

• Frontend: React, JavaScript, TypeScript
• Interoperability: FHIR R4, SMART on FHIR, CDS Hooks, USCDI v3, OAuth 2.0 with PKCE
• Backend: Python, FastAPI, REST APIs
• Database: PostgreSQL
• Cloud: Microsoft Azure
• DevOps: Azure DevOps, CI/CD pipelines

Required Qualifications

• 6+ years of software engineering experience with a strong track record building and shipping production front-end applications in React and TypeScript.
• Hands-on experience integrating with EHR / EMR systems.
• Has built and shipped at least one production SMART on FHIR application.
• Working knowledge of FHIR R4 and OAuth 2.0 / PKCE.
• Hands-on CDS Hooks implementation experience.
• A practical mapping instinct — comfort translating messy, real-world clinical data into clean models and clean UI.
• Familiarity working with PHI in a HIPAA environment.
• Excellent communication and the discipline to work precisely on a lean team.

Preferred Qualifications

• Experience with specific EHR vendors (e.g., Epic, Cerner / Oracle Health, athenahealth, or smaller ambulatory EHRs), including sandbox onboarding.
• USCDI v3 depth.
• Healthcare access, pharmacy, or payer-integration domain knowledge.
• Exposure to eligibility (270/271) and real-time benefit workflows.
• Working familiarity with Python/FastAPI and the Azure ecosystem.

Success Profile

• Thrives in an early-stage environment while applying real engineering discipline.
• Takes an application from first build through production and owns it there.
• Comfortable switching between deep interoperability work and hands-on UI work in the same week.
• Precise about data — does not conflate concepts or hand-wave a mapping.
• Passionate about building healthcare technology that improves patient access to care.

Pay Range

Actual compensation will be determined based on the candidate's experience, qualifications, and work location. Candidates in different geographic markets may be offered compensation that reflects local market conditions.

Why Join Us

You will play a foundational role in an early-stage platform building meaningful healthcare technology. You’ll own the front-end application end-to-end, build the integrations that connect it to clinical systems, and see your work land directly in users’ hands. This role offers a rare combination of early-stage agility, hands-on engineering, and real-world impact.