Software Developer - Full Stack - Senior (Health)

ISG Search Inc; Toronto; On-site; CAD 110,000 - 150,000; Full time

Job summary

ISG Search Inc in Toronto is seeking two Senior Full Stack Developers to advance healthcare applications and integrations. The role focuses on replacing scheduled polling with event-driven processing to enable real-time responses to clinical information, referrals, reports, and status changes.

Mandatory healthcare industry experience includes hands-on work with clinical workflows, interoperability standards, and FHIR APIs.

Qualifications

• Healthcare industry experience required with hands-on healthcare applications.
• Experience delivering clinical integrations and interoperability solutions.
• Strong background in FHIR subscriptions and event-driven patterns.

Responsibilities

• Design and implement FHIR Subscription and SubscriptionTopic features for clinical workflows.
• Develop Java and Node.js services, REST APIs, and AWS Lambda components.
• Build React applications using SMART on FHIR and integrate with FHIR APIs.
• Configure NextGen Connect (Mirth) channels for HL7 v2 messaging and integration.
• Ensure reliable event processing, monitoring, security, and auditing.
• Write tests, troubleshoot production issues, and document technical details.

Skills

Healthcare experience

FHIR subscription

Java

Node.js

REST API

FHIR integration

AWS Lambda

Event processing

React

SMART on FHIR

HL7 v2

Mirth / NextGen Connect

Tools

NextGen Connect (Mirth)

Job description

Software Developer - Full Stack - Senior (Health) (BBBH12303) Toronto, Canada

We are seeking two Senior Full Stack Developers to enhance healthcare applications and integration'sThe focus is on replacing scheduled polling with event-driven processing so applications can respond to clinical information, referrals, reports, and status changes in real time.

Healthcare industry experience is mandatory. Candidates must have hands-on experience with healthcare applications, clinical workflows, and healthcare interoperability standards.

Required Skills — Must Have

• Healthcare Experience: Demonstrated experience delivering healthcare applications, clinical integrations, or digital health solutions.
• FHIR Subscription and SubscriptionTopic: Strong experience with resource triggers, filters, subscription lifecycle, notification Bundles, delivery channels, and event retrieval.
• Backend Development: Senior-level Java, Node.js, REST API, and FHIR integration experience.
• AWS and Event Processing: Experience with AWS Lambda, asynchronous queues, retries, dead-letter handling, idempotency, and duplicate-event management.
• React and SMART on FHIR: Experience with React applications, SMART on FHIR launch and authorization, context, scopes, and FHIR API integration.
• Healthcare Interoperability: Hands-on experience with NextGen Connect (Mirth), HL7 v2 messaging, message transformation, validation, routing, acknowledgements, and error handling.
• Experience integrating healthcare systems and services, including HRM, Provider Registry, Client Registry, and eReferral.

Key Responsibilities

• Design and implement FHIR Subscription and SubscriptionTopic functionality to support event-driven clinical workflows.
• Develop and maintain Java and Node.js services, REST APIs, AWS Lambda functions, and queue-based event-processing components.
• Build React applications using SMART on FHIR and integrate with FHIR resources and APIs.
• Configure and maintain NextGen Connect (Mirth) channels for HL7 v2 messaging and healthcare system integration.
• Implement reliable event processing, error handling, monitoring, logging, security, and audit controls.
• Develop automated tests, validate FHIR resources, troubleshoot production issues, and prepare technical documentation.

• FHIR Subscription and SubscriptionTopic: Advanced experience with subscription architecture, lifecycle management, filters, notifications, and conformance testing.
• Backend and Event-Driven Integration: Java, Node.js, AWS Lambda, asynchronous queues, and reliable event processing.
• React and SMART on FHIR: Front-end development, SMART authorization, context handling, and FHIR API integration.
• Healthcare Interoperability: NextGen Connect (Mirth), HL7 v2, and integration with healthcare services such as HRM, Provider Registry, Client Registry, and eReferral.

Mandatory Requirement: Healthcare industry experience is essential. Candidates must demonstrate relevant hands-on experience with healthcare applications, clinical integrations, or healthcare interoperability.