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Added 4 mins ago
AP
Full Stack Team Lead
Accommodations Plus International
Markham, ON
- $130,000 to $140,000 CAD / year
…architectural direction for our Java development initiatives. This is a senior, hands-on role: you’ll help set technical direction and architect solutions while staying technically involved…
Added 34 mins ago
P
Senior Manager - Construction Engineering & Methods
Pomerleau
Vancouver, BC
- Full-time
They manage the development of construction methods, plan and design temporary works, supervise the production of models and drawings, and ensure the compliance of the works during their…
Added 49 mins ago
TF
Plant Manager – Bed-in-a-Box Manufacturing
Trevor Frances Recruitment
Ajax, ON · Aurora, ON · Markham, ON · Oshawa, ON · Toronto, ON · Vaughan, ON
- Full-time
Reporting to senior leadership, the Plant Manager will lead the bed-in-a-box operation, overseeing all aspects of production, staffing, and performance for this business unit. Our client is…
Added 49 mins ago
KF
Project Coordinator
Korn Ferry
Toronto, ON
- $85,000 to $105,000 CAD / year
- Full-time
…calendar and time management, interview scheduling, document production, database management, travel coordination, and other administrative duties as…
Added 1 hour ago
V
Project Manager (Engineering Applications)
VueReal
Waterloo, ON
- Full-time
…recognized for our innovative capabilities that enable the efficient production of millions of micro/nano-devices over vast surface areas. Our technology is pivotal for the evolution of…
Added 1 hour ago
CE
Senior Plant Engineer
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Calgary, AB
- Full-time
The Process & Facilities team is seeking a Senior Plant Engineer to join their Calgary-based team, supporting Cenovus’s Conventional business. Reporting to the Sr. Manager, Process &…
Added 1 hour ago
B
Senior DevOps Developer
Boeing
Richmond, BC · Vancouver, BC · CAN - Richmond, Canada
- Full-time
Boeing Vancouver is seeking a Senior DevOps Developer - within the Boeing Digital Services portfolio, reporting to the Manager of Software Development. This position is based in our…
Added 1 hour ago
B
AI Development Manager
Boeing
Richmond, BC · Vancouver, BC · CAN - Richmond, Canada
- Full-time
Boeing Vancouver is seeking a AI Development Manager to join the Boeing Global Services (BGS) - Digital Services Technology organization, reporting to the Senior Manager of AI & Analytics.
Added 1 hour ago
Project Manager
Zulu Alpha Kilo
Toronto, ON
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Added 1 hour ago
R
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Sault Ste. Marie, ON
- Contract
Our client is seeking a contract based Senior Cloudera Data Lake Platform Consultant to provide hands-on administration, operational support, and technical leadership for an enterprise…
Added 1 hour ago
RI
Plant Manager
Recochem Inc.
Nisku, AB
- Full-time
…support continued growth, we are seeking an experienced, Plant Manager to lead our complex manufacturing and distribution operations. Reporting to the Vice President of Canadian Operations…
Added 1 hour ago
TG
Senior Project Manager, Waterproofing
Triumph Group of Companies
Toronto, ON · Greater Toronto Area, Canada
- $100,000 to $140,000 CAD / year
- Full-time
The Senior Project Manager, Waterproofing runs our most complex waterproofing projects from handover through close out and sets the standard the rest of the project management group works…
Added 1 hour ago
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Senior Manager, Credit Risk
Jobber
Remote, Canada
- Full-time
- Remote
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Added 1 hour ago
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Toronto, ON
- Internship
Junior Social Media Manager & Artist Development Intern
Added 1 hour ago
Plant Manager
PFX Group
Nisku, AB
…support continued growth, we are seeking an experienced, Plant Manager to lead our complex manufacturing and distribution operations. Reporting to the Vice President of Canadian Operations…
Added 1 hour ago
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Production Manager
Trench Group GmbH
Pickering, ON
- $115,000 to $150,000 CAD / year
Pickering, ON | Full-Time | Senior (5+ years)
Added 2 hours ago
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Associate Managing Editor (French Services) (On Site)
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Sherbrooke, QC
- Full-time
…who will work closely with and under the supervision of the Senior Manager of News and Programming. This position is based in…
Added 2 hours ago
CS
Cook - Part-time
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Added 2 hours ago
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…building and automation, we are working on tomorrow's intelligent production…
Added 2 hours ago
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Senior Finance Analyst, Operations Finance & Analytics
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Barrie, ON
- Full-time
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Added 2 hours ago
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Project Delivery Director - Fare Payment Modernization
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Remote, Canada
- Full-time
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// Masabi is seeking an experienced Lead Program Manager to lead the end-to-end implementation and delivery of a major, multi-year transit technology modernization program in North America.…
Added 2 hours ago
AH
Systems Engineer
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Added 2 hours ago
E
Senior Planner and Scheduler
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Added 2 hours ago
M
Senior Manager, Technology Operations Centre
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vTech Solution Canada

Senior Software Developer

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 29, 2026
Posting language: English
Posted: Oct 30, 2026

Original job description

Job Title: Sr. Software Developer - Full Stack

Location: Toronto, ON

Work Mode: Hybrid (Onsite as needed basis)

Duration: 6 months contract

Description:

The Agency requires 2 Senior Full Stack Developers to support the Enterprise Pub/Sub Applications Team. The resources will update The Agency applications and associated workflows to integrate with the Agency Enterprise Pub/Sub service, which is based heavily on FHIR Subscription and SubscriptionTopic. The work will replace scheduled polling with subscription-driven event processing where appropriate so applications can respond when clinical information, referrals, reports, status changes, or other relevant events become available. The roles spans FHIR event architecture, backend, serverless integration, interface, and user-interface development. The resource will define and implement FHIR Subscription and SubscriptionTopic behaviour; build Java and Node.js services, AWS Lambda functions, and queue-based event-processing components; develop React applications that use SMART on FHIR; and configure NextGen Connect (Mirth) channels for HL7 v2 workflows. The work includes subscription lifecycle management, filtering, notification handling, application and workflow changes, testing, monitoring, and transition of existing polling processes.

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

Total: 100 Points

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More about this job

Responsibilities

Design and implement FHIR Subscription and SubscriptionTopic workflows, Java and Node.js services, AWS Lambda and queue-based event processing, React applications using SMART on FHIR, and HL7 v2 integrations through NextGen Connect. Test, monitor, secure, and support these integrations, including reliable event handling, clinical workflow updates, operational documentation, and transition from polling-based processes.

Requirements

Requires advanced hands-on experience with FHIR Subscription and SubscriptionTopic, Java and Node.js development, AWS Lambda and asynchronous event processing, and production React applications using SMART on FHIR. Also requires NextGen Connect (Mirth), HL7 v2, and Ontario digital health integration experience, including HRM, Provider Registry, Client Registry, and eReferral.

Skills

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

Visa sponsorship

Not detected in the job text

Keywords

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

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