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Added 13 mins ago
C
Senior Consultant, Control Optimization & Analytics
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Toronto, ON
- Full-time
…developing and delivering on the Advanced Analytics team’s technical solution strategies and commitment to develop, support, and continuously improve analytics capabilities and services.…
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C
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- Full-time
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BG
Service Manager
Brandt Group of Companies
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- Full-time
Possess confidence, critical thinking, knowledge, and technical skills to assess and solve customer, business, and personnel problems effectively and efficiently.
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Intermediate Civil Structural Engineer (Contract)
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Provide technical input on site development, grading, drainage, foundations, structural steel, concrete structures, earthworks, and rehabilitation of existing assets.
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- Full-time
Reporting to the Director Manager, Strategic Communications, the Internal Communications Manager - Industrial West leads the developments and execution of internal communications strategies…
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Added 28 mins ago
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Accounting Manager
Black & McDonald Limited
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- $95,000 to $110,000 CAD / year
- Full-time
…delivers high quality construction, facilities management, and technical solutions. We are a family-owned and family-run company that employs thousands of highly skilled and talented…
Added 28 mins ago
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Directeur - Ventes / Manager - Sales
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- Full-time
As a Manager – Sales, you will provide strategic direction and progressive leadership to achieve sales and profit goals within a region, specific line(s) of business or channels. You will…
Added 28 mins ago
ES
Project Coordinator
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- Full-time
…offer a flexible work environment with a highly experienced technical team, where you will be offered guidance and hands on training and continuously challenged in all aspects of the…
Added 28 mins ago
Environmental & Sustainability Engineer
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Toronto, ON
This position is an on-site role (5 days/week), reporting to the Sr. Manager, Technical Services.
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Senior Field Representative, Technology Service
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Victoria, BC
- Full-time
…to service and repair low-volume devices based on regional business…
Added 28 mins ago
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Account Coordinator, Commercial SME
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Calgary, AB · Edmonton, AB · Langley (District), BC · Newmarket, ON · Ottawa, ON · Toronto, ON · Windsor, ON · Langley, BC
- Full-time
Manage the manual renewal process as directed by the Client Manager, including pre-renewal work, billing, invoicing, and premium financing.
Added 29 mins ago
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Contract Manager
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- Full-time
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- Full-time
…Transformer Service group! Reporting to the Tendering and Quotation Manager, you'll lead and complete RFQs for transformer, support customers with technical queries, and ensure seamless…
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Gestionnaire des ventes et des appels d'offres /Sales Engineer & Service Tender Manager
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Montreal, QC · Saint-Laurent, QC
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Spécialiste de l’appel d’offres - Services haute tension / Quotation Tender Specialist - High Voltage Services
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- Full-time
Join our innovative team as a Quotation Tender Specialist in the High Voltage Service group! Reporting to the Tendering Manager, you'll lead and complete RFQs for Switchgear after sales…
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Spécialiste de l’appel d’offres / Quotation Tender Specialist
JR Automation
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- Full-time
…Transformer Service group! Reporting to the Tendering and Quotation Manager, you'll lead and complete RFQs for transformer, support customers with technical queries, and ensure seamless…
Added 29 mins ago
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Technical Safety Specialist
JR Automation
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…solutions developed and deployed by the Urban Rail Signaling business line and compliance to safety principles, industry specific standards and best practices for the development of…
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- Full-time
The Business Development Manager is responsible for driving growth of the Substation Service, Modernization, and Lifecycle Management business across North America. The role focuses on…
Added 34 mins ago
Manager of P25 Radio Operations
Department of Forestry, Agriculture and Lands
St. John's, NL
The Manager of P25 Radio Operations is a technical leadership position responsible for leading the administration, support, and ongoing operation of the Province Wide Radio System, the…
Added 44 mins ago
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Senior Manager - Systems Requirements
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Added 44 mins ago
MI
Intermediate Full-Stack Developer
Method Integration Inc.
Remote, Canada
- $70,000 to $90,000 CAD / year
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…over time with coaching from the Growth tech lead and your…
Added 44 mins ago
GQ
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Remote, Canada
- Full-time
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You’ll be a Product Manager owning a strategic area of Great Question with a team of 3–4 engineers. We’ll give you a clear outcome to move. Figuring out the bets that get us there, and the…
Added 44 mins ago
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- $125,000 to $150,000 CAD / year
- Full-time
A bachelor’s degree in business, engineering, science, or another relevant technical field.
Added 44 mins ago
MP
Key Account Manager, Rare Disease - Quebec and Canada East
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Toronto, ON
- $130,000 to $160,000 CAD / year
- Full-time
Develop, implement and maintain annual territory business plans based on market data and insights and marketing plans

Maarut

RQ00828 - Software Developer - Full Stack - Senior

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
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

The developer will design, implement, and maintain FHIR Subscription and SubscriptionTopic workflows to support clinical event-driven integrations. They will also develop and support Java, Node.js, and React applications while managing HL7 v2 message transformations and AWS-based asynchronous processing.

Requirements

Candidates must have advanced experience with FHIR Subscription models, Java, Node.js, and AWS Lambda for event-driven architectures. Proficiency in React, SMART on FHIR, and NextGen Connect (Mirth) for HL7 v2 integration within Ontario digital health standards is required.

Skills

FHIR
SubscriptionTopic
Java
Node.js
AWS Lambda
React
SMART on FHIR
NextGen Connect
Mirth
HL7 v2
REST APIs
Asynchronous queues
CloudWatch
System integration
Software development
Clinical workflows

Visa sponsorship

Not detected in the job text

Keywords

FHIR
SubscriptionTopic
Java
Node.js
AWS Lambda
React
SMART on FHIR
NextGen Connect
Mirth
HL7 v2
REST APIs
Amazon SQS
Amazon SNS
Amazon EventBridge
Amazon API Gateway
Amazon CloudWatch
Infrastructure as Code
Hospital Report Manager
Provider Registry
Client Registry
eReferral
Event-driven architecture
Idempotency
Dead-letter handling
Conformance testing
Clinical workflows
Enterprise Pub/Sub
System integration
Software development
Ontario digital health standards

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