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Added 6 days ago
CC
Core Software Developer
Circle Cardiovascular Imaging
Calgary, AB
- Full-time
The Software Developer is responsible for the development of the next generation cardiovascular post-processing software and the maintenance of our existing revenue-driving products. The…
Added 6 days ago
G
Développeur(euse) logiciel / Software Developer - C#/.NET
Genetec
Montreal, QC
- Full-time
Expérience en programmation orientée objet (C# ou Java)
Added 6 days ago
RC
Senior Backend Java Developer
Realtek Consulting LLC
Toronto, ON
- Contract
We are seeking 8-12 years experienced highly skilled Senior Backend Java Developer with strong expertise in Java, Spring Boot, Microservices, API Integration, Azure Cloud, and…
Added 6 days ago
AI
Senior Power Platform Engineer
Aptino, Inc.
Quebec, QC
- Contract
Added 6 days ago
A
Software Developer
Actalent
Toronto, ON
- $24 to $33 CAD / hour
- Contract
As a Software Developer, you will lead the design and delivery of software services and website stacks that involve engaging creatives, cross-screen placements, targeting, optimization,…
Added 6 days ago
S
Software Engineering LMTS
Salesforce
Toronto, ON · Canada - Toronto
- Full-time
Added 6 days ago
Digital Architect
Government of Alberta
AB
Experience with various programming languages (e.g., Python, Java, .NET, Node.js).
Added 6 days ago
AC
Fullstack Developer
Adastra Corporation
Markham, ON
- Contract
We are looking for a Full Stack Developer to build scalable, production-ready applications that combine modern backend engineering with advanced AI and Generative AI capabilities. The role…
Added 6 days ago
A
Entry Level Technology Development Program - Summer Analyst - Canada - NAELFY27
Accenture
Calgary, AB · Vancouver, BC · Ottawa, ON · Toronto, ON · Montreal, QC · Regina, SK
- Full-time
Demonstrated proficiencies in 2-3 programming skills (Java, C/++, Python)
Added 6 days ago
O
Sr. Software Developer
OpenText
Richmond Hill, ON
- Full-time
The Senior Software Developer is a hands-on technical contributor and emerging technical lead who designs, develops, and supports Java and Spring Boot microservices running on Google Cloud…
Added 6 days ago
O
Manager, Software Development
OpenText
Richmond Hill, ON
- Full-time
…software engineers and technical specialists working across Java-based cloud services, Python-based AI and document intelligence, React user experiences, enterprise integrations, and…
Added 6 days ago
T
Software Engineer II (Java/Spring)
TD
Toronto, ON
- Full-time
5+ years' experience with UI, Java, RESTful APIs, Spring, Spring boot and Angular.
Added 6 days ago
T
Data Engineer Intern/Co-op (Winter 2027)
TD
Toronto, ON
- Full-time
Familiarity with at least one of the following technologies: Java, Scala, Python, Pyspark, or SQL
Added 6 days ago
CC
Core Software Developer
Circle Cardiovascular Imaging
Calgary, AB
- Full-time
The Software Developer is responsible for the development of the next generation cardiovascular post-processing software and the maintenance of our existing revenue-driving products. The…
Added 6 days ago
EC
Java Developer
Experis Canada
Toronto, ON
- Contract
5+ years of experience developing enterprise applications using Java and Spring Boot.
Added 6 days ago
FG
Software Developer | Banking & Capital Markets
FDM Group
Toronto, ON
- Contract
FDM is seeking a Experienced Software Developer located in Toronto to support a project in the Banking & Capital Markets sector. Involvement in this project is anticipated to last initially…
Added 6 days ago
AI
Java Developer
Apptoza Inc.
Mississauga, ON
- Full-time
Design, develop, and maintain Java based microservices
Added 6 days ago
ZS
RPA Platform Engineer
Zodiac Solutions, Inc
Toronto, ON
- Full-time
Added 6 days ago
T
Senior Software Developer In Test - Python Automation Engineer
Telesat
Ottawa, ON
- Contract
Read and understand existing Java code and create or modify small Java scripts or utilities when required. The role does not own Java-based test automation.
Added 6 days ago
SL
Senior Data Engineer
Sun Life
Toronto, ON · Waterloo, ON · Sun Life Toronto One York
- Full-time
At least intermediate proficiency in Python, Spark, Glue, Lambda, HQL or similar technologies; Java or another object-oriented programming language is an asset
Added 6 days ago
TI
Full Stack Developers
Teckhorizon Inc
Toronto, ON
- Contract
…integrations to subscription-driven event processing using Java, Node.js, AWS Lambda, React, SMART on FHIR, and NextGen Connect…
Added 6 days ago
VS
Java AWS Developer|| CALGARY, CN (Onsite)
Verito Solutions Inc
Calgary, AB
- Contract
The Intermediate AWS Developer supports the delivery of cloud‑native and serverless solutions within enterprise client environments. This role contributes to consulting engagements by…
Added 6 days ago
I
Software Developer - Full Stack - Senior (Health)
isgSearch
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Backend Development: Senior-level Java, Node.js, REST API, and FHIR integration experience.
Added 6 days ago
RT
Sr. Software Developer - Full Stack
Russell Tobin
Toronto, ON
- $90 to $95 CAD / hour
- Contract
Job Title: Sr. Software Developer - Full Stack
Added 6 days ago
T
Software Engineer II (SDET)
TD
Toronto, ON
- Full-time

Teckhorizon Inc

Full Stack Developers

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 27, 2026
Posting language: English
Posted: Oct 28, 2026

Original job description

Our Client is looking for experienced Senior Full Stack Developers to support enterprise healthcare integration initiatives involving FHIR Subscription, SubscriptionTopic, and event-driven architecture.

The successful candidates will develop and modernize healthcare applications, transitioning traditional polling-based integrations to subscription-driven event processing using Java, Node.js, AWS Lambda, React, SMART on FHIR, and NextGen Connect (Mirth).

Must-Have Skills

Advanced hands-on experience with FHIR Subscription and SubscriptionTopic, including event triggers, subscription filters, lifecycle management, notification Bundles, delivery channels, and conformance testing.
Strong experience developing Java and Node.js backend services, REST APIs, FHIR integrations, and event-driven applications.
Hands-on implementation of FHIR Subscription workflows using AWS Lambda and asynchronous queues, including retries, dead-letter queues, idempotency, duplicate-event handling, and replay.
Strong React development experience with SMART on FHIR, including authorization, launch context, scopes, and FHIR API integration.
Experience with NextGen Connect (Mirth) and HL7 v2, including message transformation, validation, routing, acknowledgements, and production support.
Knowledge of Ontario digital health standards and provincial services, including HRM, Provider Registry, Client Registry, and eReferral.
Previous public sector experience is mandatory.

Key Responsibilities

Design and implement FHIR Subscription and SubscriptionTopic integrations for event-driven clinical workflows.
Develop and maintain Java and Node.js microservices, REST APIs, and event-processing components.
Build AWS Lambda functions and queue-based integrations for asynchronous event processing.
Develop React applications integrated with SMART on FHIR and healthcare APIs.
Configure and maintain NextGen Connect (Mirth) channels for HL7 v2 message processing.
Implement subscription lifecycle management, event filtering, notifications, retries, error handling, and monitoring.
Integrate enterprise applications with FHIR-based Pub/Sub services and replace polling workflows with real-time event processing.
Perform unit, integration, regression, conformance, and end-to-end testing.
Implement secure authentication, authorization, audit logging, and privacy controls for healthcare information.
Produce technical documentation and provide knowledge transfer to internal teams.

Nice-to-Have Skills

FHIR R5 Subscription model and R5 Subscription Backport.
AWS SQS, SNS, EventBridge, API Gateway, and CloudWatch.
CI/CD pipelines, Infrastructure as Code, containerization, and automated security scanning.
FHIR profiles, event schemas, interface contracts, and enterprise integration governance.

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More about this job

Responsibilities

Design and implement FHIR subscription integrations and event-driven clinical workflows, developing Java and Node.js services, AWS Lambda and queue-based processing, and React applications integrated with SMART on FHIR. Configure Mirth channels, replace polling with real-time event processing, implement security and monitoring, conduct testing, and provide technical documentation and knowledge transfer.

Requirements

Candidates need advanced hands-on experience with FHIR Subscription and SubscriptionTopic, Java and Node.js backend development, AWS Lambda and asynchronous event processing, and React with SMART on FHIR. Experience with Mirth and HL7 v2, Ontario digital health services and standards, and public sector work is required; senior-level experience is indicated, but no specific years are stated.

Skills

FHIR Subscription
SubscriptionTopic
Java
Node.js
AWS Lambda
React
SMART on FHIR
NextGen Connect (Mirth)
HL7 v2
REST APIs
Event-Driven Architecture
Asynchronous Queues
FHIR Integration
Ontario Digital Health Standards
Public Sector Experience

Visa sponsorship

Not detected in the job text

Keywords

FHIR Subscription
SubscriptionTopic
FHIR R5
FHIR R5 Subscription Backport
Java
Node.js
AWS Lambda
AWS SQS
AWS SNS
Amazon EventBridge
Amazon API Gateway
Amazon CloudWatch
React
SMART on FHIR
NextGen Connect (Mirth)
HL7 v2
REST APIs
Event-Driven Architecture
Asynchronous Queues
Dead-Letter Queues
Idempotency
FHIR Pub/Sub
FHIR Profiles
Ontario Digital Health Standards
HRM
Provider Registry
Client Registry
eReferral
CI/CD
Infrastructure as Code

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