Senior Full Stack Developer – FHIR, Java, Node.js, AWS & Healthcare Integration

ThoughtStorm Inc.; Toronto; On-site; CAD 120,000 - 150,000; Full time

Job summary

ThoughtStorm Inc. is seeking a Senior Full Stack Developer focused on FHIR and healthcare integration in Toronto. You will work on subscription-based architectures, HL7 v2 messaging, and SMART on FHIR implementations, partnering with public sector healthcare services.

The role requires hands-on development across Java, Node.js, REST APIs, and cloud-based event processing, with strong testing and secure healthcare app practices.

Qualifications

• Hands-on experience with FHIR subscriptions, topics, and event-driven integration.
• Proficiency in Java, Node.js, REST APIs and AWS Lambda for healthcare workloads.
• Experience with React and SMART on FHIR for launch flows and authorization.
• Hands-on with NextGen Connect (Mirth), HL7 v2 messaging, and data routing.

Skills

FHIR subscriptions

Event-driven architecture

Clinical data integration

Java

Node.js

REST APIs

AWS Lambda

Tools

NextGen Connect (Mirth)

HL7 v2

Message transformation

Routing and validation

Job description

Hiring: Senior Full Stack Developer – FHIR & Healthcare Integration

• Strong hands-on experience with FHIR Subscription, SubscriptionTopic, event-driven architecture, and clinical data integration.
• Expertise in Java, Node.js, REST APIs, AWS Lambda, and asynchronous queue-based event processing.
• Experience with React and SMART on FHIR, including launch flows, authorization, scopes, and FHIR API integration.
• Hands-on expertise in NextGen Connect (Mirth), HL7 v2, message transformation, routing, validation, and acknowledgements.
• Knowledge of Ontario digital health services, including Hospital Report Manager (HRM), Provider Registry, Client Registry, and eReferral.
• Experience with event notifications, subscription lifecycle management, retries, idempotency, error handling, monitoring, and production troubleshooting.
• Public sector experience is mandatory, with strong testing, integration, and secure healthcare application development skills.