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Added 18 mins ago
YC
Senior Developer, D365
Yoush Consulting
Toronto, ON
- Full-time
As a Senior Developer, Dynamics 365 your responsibilities will include:
Added 48 mins ago
NB
CHIEF DEVELOPER FULLSTACK - PYTHON
National Bank of Canada
Montreal, QC
- Full-time
A career as a Full Stack Developer on the Information Technology Delivery – Capital Markets team at National Bank means acting as a specialist in software development and cloud solutions.…
Added 48 mins ago
Salesforce Technical Architect - Financial Services Cloud, Marketing Cloud & Data360 - Manager
EY
Toronto, ON · Montreal, QC
We're looking for a senior, hands-on technical architect - someone with deep Financial Services Cloud implementation experience who still configures, codes, and builds, not just designs on…
Added 2 hours ago
F
Senior Machine Learning Engineer
Fusemachines
Remote, Canada
- Contract
- Remote
We’re hiring a Senior Machine Learning Engineer to architect, build, and deploy high-performance machine learning systems that power technology stack. You will work across the entire ML…
Added 6 hours ago
B
Software Engineer - Model Performance Systems
Baseten
Montreal, QC
- $165,000 to $330,000 USD / year
- Full-time
…applied AI research, flexible infrastructure, and seamless developer tooling, we enable companies operating at the frontier of AI to bring cutting-edge models into production. We're growing…
Added 6 hours ago
B
Software Engineer - Model Performance Systems
Baseten
Toronto, ON
- $165,000 to $330,000 USD / year
- Full-time
…applied AI research, flexible infrastructure, and seamless developer tooling, we enable companies operating at the frontier of AI to bring cutting-edge models into production. We're growing…
Added 7 hours ago
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Application Programmer
Collabera
Mississauga, ON
- $70 to $80 USD / hour
- Full-time
We are seeking an experienced Senior Forward Deployed Engineer (FDE) with strong expertise in Java, Python, backend/full-stack development, and solution architecture. The ideal candidate…
Added 10 hours ago
TC
M365 (Microsoft) – Tech Lead
Tata Consultancy Services
Vancouver, BC
- Full-time
…is enabling its clients to transform themselves across the full AI stack, from infrastructure to…
Added 10 hours ago
TC
Technical Business Analyst
Tata Consultancy Services
Montreal, QC
- Full-time
…is enabling its clients to transform themselves across the full AI stack, from infrastructure to…
Added 10 hours ago
T
Senior Full Stack Developer – FHIR, Java, Node.js, AWS & Healthcare Integration
ThoughtStorm
Toronto, ON
- Contract
Hiring: Senior Full Stack Developer – FHIR & Healthcare Integration
Added 10 hours ago
SF
Senior AI Engineer
Safe Fleet
Coquitlam, BC
- Full-time
We are looking for a hands-on Senior AI Engineer to build the platform that makes that possible - the shared services, agent framework, standards and tooling that allow every engineer on…
Added 10 hours ago
LM
Senior Software Engineer - Product Lead - ISS Team
Lockheed Martin
Ottawa, ON
- $102,750 to $134,750 USD / year
- Full-time
Proven Full-Stack development experience throughout the software engineering processes from planning, design, development to deployment.
Added 10 hours ago
C
Senior Software Developer
Cavtera
Ottawa, ON · Kanata, ON
- Full-time
We’re looking for a Senior Software Developer to join Cavtera’s growing development team.
Added 10 hours ago
C
Senior Full-Stack Engineer / Technical Lead - Onsite
Cognizant
Toronto, ON
- Full-time
We are looking for an experienced Senior Full-Stack Engineer / Technical Lead to design and develop scalable enterprise applications and cloud-native solutions. The ideal candidate will…
Added 10 hours ago
MI
FHIR Integration Engineer/Full Stack Engineer (Healthcare) 7+ years of experience
Maarut Inc
Toronto, ON
- Contract
Senior-level experience developing Java and Node.js services, REST APIs, FHIR integrations, event publishers and consumers, and production application logic.
Added 10 hours ago
LM
Senior Software Engineer - Product Lead
Lockheed Martin
Ottawa, ON
- Full-time
Proven Full-Stack development experience throughout the software engineering processes from planing, design, development to deployment.
Added 10 hours ago
N
Software Engineer 2 - Kubernetes Backend and Platform Engineering
Nutanix
Vancouver, BC
- $103,000 to $155,000 CAD / year
- Full-time
…the market every day, new standards are becoming mature at full…
Added 11 hours ago
SC
AI Enablement Specialist
Smart Circle International
Richmond Hill, ON
- $90,000 to $100,000 USD / year
- Full-time
Job Details: Job Location: Toronto Office - Richmond Hill, ON, Position Type: Full Time, Education Level: 4 Year Degree, Salary Range: $90000.00 - $100000.00Salary/year, Job Category: IT…
Added 11 hours ago
M
Senior Software Engineer
Manulife
Toronto, ON · Waterloo, ON
- Full-time
We are looking for a Senior Software Engineer to join our Affinity Life technology team. In this hands-on role, you will design, develop, modernize, and support mission-critical enterprise…
Added 12 hours ago
IG
Lead Full Stack Developer
Insight Global
Toronto, ON
- $50 to $70 CAD / hour
- Contract
Insight Global is seeking a hands-on Lead Full Stack Developer to support a major KYC transformation initiative within a large banking environment. This role will focus on both modernizing…
Added 13 hours ago
C
Full Stack Senior Engineering Lead - Inventory Orchestration
Citi
Mississauga, ON
- Full-time
A Full Stack Senior Engineering Lead - Inventory Orchestration is a senior-level position responsible for leading the solutioning, design, and implementation of microservice-based…
Added 13 hours ago
IF
Senior Full stack AI Developer (Python & Angular/React)
Intact FC
Toronto, ON · Montreal, QC
- Full-time
We’re looking for a Senior Full stack AI Developer (Python & Angular/React) to join our growing team!
Added 14 hours ago
V
Staff Software Developer, Simulation / Développeur(se) logiciel principal(e), Simulation
Vention
Montreal, QC
- Full-time
In this role, you will own the architecture of the simulation platform in Vention’s web-first technology stack. The platform uses MuJoCo as its physics engine. Your focus is how we…
Added 14 hours ago
Senior, Cloud Engineering
Scotiabank
Toronto, ON
The Senior, Cloud Engineering role operates within the Cloud Platform Engineering team. This role specializes in Cloud Developer Experience (DevEx) Engineering, focusing on building tools,…
Added 14 hours ago
S
Senior Full-Stack Web Developer (C#/MS-SQL/Front-end) - Western Canada
Splashdot
Remote, Canada
- $110,000 to $140,000 CAD / year
- Full-time
- Remote
Senior Full-Stack Web Developer (C#/MS-SQL/Front-end) – Western Canada

Maarut Inc

FHIR Integration Engineer/Full Stack Engineer (Healthcare) 7+ years of experience

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 28, 2026
Posting language: English
Posted: Oct 29, 2026

Original job description

Required Skills:

Strong hands-on experience with FHIR Subscription and SubscriptionTopic, including topic definitions, resource triggers, filter criteria, subscription status and lifecycle, notification Bundles, delivery channels, heartbeat notifications, and event retrieval.
Senior-level experience developing Java and Node.js services, REST APIs, FHIR integrations, event publishers and consumers, and production application logic.
Strong experience implementing FHIR Subscription and SubscriptionTopic workflows with AWS Lambda and asynchronous queues, including notification Bundle handling, retries, dead-letter handling, idempotency, concurrency, duplicate-event handling, and replay.
Strong React development experience building production applications that use SMART on FHIR launch, authorization, context, scopes, and FHIR API integration patterns.
Hands-on experience with NextGen Connect (Mirth), HL7 v2 integration, and Ontario digital health standards and provincial services, including the Hospital Report Manager (HRM) Standard, Provider Registry, Client Registry, and eReferral, covering message transformation, validation, routing, acknowledgements, error handling, conformance testing, and production support.

Responsibilities:

Assess polling-based integrations and workflows, identify the clinical or application events that should trigger notifications, and map each workflow to the appropriate FHIR SubscriptionTopic and Subscription behaviour.
Define, implement, and maintain SubscriptionTopic resources, including supported resource triggers, event definitions, filter parameters, notification shapes, and conformance requirements.
Implement Subscription creation, validation, activation, status management, renewal, deactivation, delivery configuration, heartbeat handling, event retrieval, and subscriber lifecycle controls.
Design, develop, test, and support Java and Node.js services that publish events, manage subscriptions, consume notification Bundles, call FHIR APIs, and route resulting actions to application workflows.
Develop and maintain AWS Lambda functions and queue-based integrations for asynchronous event processing, validation, enrichment, workflow coordination, and downstream application updates.
Implement reliable processing controls for idempotency, duplicate detection, retries, dead-letter handling, controlled concurrency, ordering where required, reconciliation, replay, and recovery.
Develop and support React applications that use SMART on FHIR to present subscription-related workflows, launch within supported contexts, obtain authorized FHIR access, and interact with FHIR resources and application APIs.
Develop and maintain NextGen Connect (Mirth) channels that receive, transform, validate, route, and acknowledge HL7 v2 messages and connect those workflows to FHIR resources, application services, and Enterprise Pub/Sub events.
Validate Subscription, SubscriptionTopic, notification Bundle, and related FHIR resource instances against the applicable FHIR definitions, The Agency profiles, terminology, and business rules.
Implement event correlation, structured logging, metrics, alerts, audit records, subscription health monitoring, and operational dashboards so teams can trace processing across publishers, Enterprise Pub/Sub, subscribers, and downstream applications.
Create and maintain unit, integration, contract, conformance, interface, regression, end-to-end, performance, and failure-recovery tests covering FHIR subscription workflows, backend services, serverless processing, HL7 v2, and React components.
Apply secure configuration, authentication, authorization, least-privilege access, privacy-aware logging, and appropriate handling of personal health information, and prepare technical designs, mappings, runbooks, and knowledge-transfer materials with project stakeholders.

Desired Skills:

Experience implementing the FHIR R5 Subscription model or the R5 subscription backport for earlier FHIR releases, including SubscriptionTopic, rest-hook or websocket delivery, status notifications, heartbeat notifications, and event retrieval.
Experience with AWS messaging, integration, and observability services such as Amazon SQS, Amazon SNS, Amazon EventBridge, Amazon API Gateway, and Amazon CloudWatch.
Experience with infrastructure as code, automated build and deployment pipelines, containerized workloads, configuration management, and automated security scanning.
Experience defining versioned FHIR profiles, event schemas, interface contracts, compatibility rules, correlation identifiers, and governance practices for shared enterprise integrations.
Experience using NextGen Connect (Mirth) to integrate with Ontario digital health standards and provincial services, including the Hospital Report Manager (HRM) Standard, Provider Registry, Client Registry, and eReferral, with hands-on responsibility for HL7 v2 transformation, validation, routing, acknowledgements, conformance testing, and production support.

Required Competencies:

Advanced FHIR Subscription and SubscriptionTopic experience, including resource triggers, filter criteria, lifecycle and status management, notification Bundles, delivery channels, heartbeat notifications, event retrieval, validation, and conformance testing.
FHIR Subscription and SubscriptionTopic implementation experience for event-driven clinical workflows, including topic and event design, subscription filters and lifecycle management, notification Bundle processing, asynchronous queue processing, idempotency, retries, dead-letter handling, duplicate-event handling, observability, replay, and production troubleshooting using Java, Node.js, and AWS Lambda.
React and SMART on FHIR experience, including launch and authorization flows, scopes, context handling, FHIR API integration, accessible user-interface development, automated testing, and secure handling of clinical information.
NextGen Connect (Mirth), HL7 v2, and Ontario digital health standards experience, including the Hospital Report Manager (HRM) Standard, Provider Registry, Client Registry, and eReferral, covering message transformation, validation, routing, acknowledgements, error handling, interface and conformance testing, production support, and integration with FHIR, Java, Node.js, or serverless components.

Rated Criteria:

Advanced FHIR Subscription and SubscriptionTopic experience, including resource triggers, filters, lifecycle and status management, notification Bundles, delivery channels, heartbeat notifications, event retrieval, validation, and conformance testing. 25 Points
Demonstrated FHIR Subscription and SubscriptionTopic implementation experience using Java, Node.js, AWS Lambda, and asynchronous queues, including topic and event design, subscription filters and lifecycle management, notification Bundle processing, idempotency, retries, dead-letter handling, duplicate-event handling, replay, observability, and production troubleshooting. 25 Points
React and SMART on FHIR experience, including launch and authorization flows, scopes, context handling, FHIR API integration, accessible user-interface development, and testing. 25 Points
NextGen Connect (Mirth) and HL7 v2 integration experience, including transformation, validation, routing, acknowledgements, error handling, interface testing, and integration with Ontario digital health standards and provincial services such as the Hospital Report Manager (HRM) Standard, Provider Registry, Client Registry, and eReferral. 25 Points

Requirements

Deliverables:

FHIR SubscriptionTopic definitions and supporting artifacts that document event triggers, supported filters, notification content, delivery expectations, and conformance rules for assigned Enterprise Pub/Sub workflows.
Subscription lifecycle components for creation, validation, activation, status management, renewal, deactivation, delivery configuration, heartbeat handling, event retrieval, and subscriber support.
Updated Agency applications and workflows that integrate with Enterprise Pub/Sub and replace assigned polling-based processes with FHIR subscription-driven event processing.
Production-ready Java and Node.js services, APIs, publishers, consumers, adapters, and integration components for managing subscriptions and processing FHIR events and notifications.
AWS Lambda functions and queue-based processing components for validation, enrichment, retries, dead-letter handling, idempotency, duplicate detection, reconciliation, replay, and downstream updates.
React components that use SMART on FHIR launch, authorization, context, scopes, and FHIR APIs to support the assigned subscription and application workflows.
NextGen Connect (Mirth) channels and configurations for HL7 v2 ingestion, transformation, validation, routing, acknowledgement handling, error management, and integration with FHIR and event-processing components.
FHIR profiles, examples, validation rules, event and interface mappings, contract tests, conformance tests, integration tests, end-to-end tests, and release-validation evidence.
Structured logs, metrics, alerts, dashboards, subscription health monitoring, audit records, reconciliation controls, incident diagnostics, operational procedures, and production-support runbooks.
Technical designs, API and interface specifications, workflow documentation, security and configuration notes, deployment instructions, demonstrations, release-support materials, and knowledge-transfer artifacts.

Must Haves:

Advanced FHIR Subscription and SubscriptionTopic experience, including resource triggers, filters, lifecycle and status management, notification Bundles, delivery channels, heartbeat notifications, event retrieval, validation, and conformance testing. 25 Points
Demonstrated FHIR Subscription and SubscriptionTopic implementation experience using Java, Node.js, AWS Lambda, and asynchronous queues, including topic and event design, subscription filters and lifecycle management, notification Bundle processing, idempotency, retries, dead-letter handling, duplicate-event handling, replay, observability, and production troubleshooting. 25 Points
React and SMART on FHIR experience, including launch and authorization flows, scopes, context handling, FHIR API integration, accessible user-interface development, and testing. 25 Points
NextGen Connect (Mirth) and HL7 v2 integration experience, including transformation, validation, routing, acknowledgements, error handling, interface testing, and integration with Ontario digital health standards and provincial services such as the Hospital Report Manager (HRM) Standard, Provider Registry, Client Registry, and eReferral. 25 Points

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More about this job

Responsibilities

Design and implement FHIR Subscription and SubscriptionTopic workflows to replace polling-based processes, including Java and Node.js services, AWS Lambda and queue-based event processing, and React applications using SMART on FHIR. Build and support Mirth channels for HL7 v2 and Ontario digital health integrations, while ensuring conformance, security, observability, testing, and production readiness.

Requirements

The role requires advanced FHIR Subscription and SubscriptionTopic expertise, including lifecycle management, notification Bundles, event retrieval, and reliable asynchronous processing with Java, Node.js, AWS Lambda, and queues. It also requires React and SMART on FHIR experience, plus hands-on Mirth and HL7 v2 integration with Ontario services such as HRM, Provider Registry, Client Registry, and eReferral.

Skills

FHIR Subscriptions
FHIR SubscriptionTopic
Java
Node.js
AWS Lambda
Asynchronous Queues
React
SMART on FHIR
NextGen Connect (Mirth)
HL7 v2
FHIR API Integration
Event-Driven Architecture
AWS Messaging Services
Ontario Digital Health Standards
Automated Testing
Production Support

Visa sponsorship

Not detected in the job text

Keywords

FHIR R5
FHIR Subscription
SubscriptionTopic
Notification Bundles
Java
Node.js
REST APIs
AWS Lambda
Amazon SQS
Amazon SNS
Amazon EventBridge
Amazon API Gateway
Amazon CloudWatch
React
SMART on FHIR
NextGen Connect (Mirth)
HL7 v2
Ontario Digital Health Standards
Hospital Report Manager (HRM)
Provider Registry
Client Registry
eReferral
Event-Driven Architecture
Idempotency
Dead-Letter Handling
FHIR Profiles
Conformance Testing
Infrastructure as Code
CI/CD
Personal Health Information

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