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S M Software Solutions Inc

RQ00811 – Software Developer – Full Stack – Senior

Toronto, ON, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Nov 25, 2026
Posting language: English
Posted: Oct 26, 2026

Original job description

Client: Supply Ontario – RQ00811

We are seeking a Senior Full Stack Software Developer with extensive hands-on experience in Java, Spring Boot, REST APIs, HAPI FHIR, NextGen Connect (Mirth), HL7 v2, ReactJS, and healthcare integration solutions. The successful candidate will support the Ontario Clinical Report Exchange (OCRE) project by designing and developing a Java Spring Boot server to replace the legacy Hospital Report Manager (HRM) solution, enabling the secure exchange of hospital clinical reports with electronic medical record (EMR) systems. The role spans backend development, integration services, FHIR resource processing, ReactJS user-interface development, secure application delivery, and production support. The candidate will also work with Ontario Health Enterprise Pub/Sub, FHIR Subscriptions, OAuth 2.0, mutual TLS (mTLS), and Docker to deliver secure, reliable, and production-ready healthcare integration capabilities.

Role Snapshot

Job Title: RQ00811 – Software Developer – Full Stack – Senior
Client: Supply Ontario
Work Location: 525 University Avenue, Toronto, Ontario, Canada
Work Arrangement: Hybrid – Onsite as Needed
Estimated Start Date: November 23, 2026
Estimated End Date: May 20, 2027
Business Days: 124.00
Extension: Option to extend for up to an additional 64 business days, at the Agency's discretion
Hours: 7.25 hours per day, 5 days per week
Public Sector Experience: Must Have

Must Have

Java, Spring Boot, REST API, and HAPI FHIR development experience, including hands-on processing of FHIR R4 and DSTU2 resources in production-grade services.
NextGen Connect (Mirth) and HL7 v2 integration experience, including transformation, validation, routing, acknowledgements, error handling, Java-service integration, and practical experience with the Ontario HRM Standard.
ReactJS full-stack development experience and hands-on knowledge of FHIR Subscriptions and Ontario Health Enterprise Pub/Sub, including translating physician-level preferences into subscription filter criteria.
Secure application and container delivery experience using OAuth 2.0, mutual TLS (mTLS), Docker, automated testing, configuration management, audit logging, and production troubleshooting.

Description

The Agency requires a Senior Full Stack Developer contract resource to support the Ontario Clinical Report Exchange (OCRE) project.

The resource will help design and build a Java Spring Boot server that replaces the legacy Hospital Report Manager (HRM) solution and supports the secure exchange of hospital clinical reports with electronic medical record systems.

The role spans the OCRE integration, backend, and user-interface layers. NextGen Connect (Mirth) will process inbound HL7 v2 messages and send the resulting content to Java services, while HAPI FHIR will be used to process FHIR R4 and DSTU2 resources.

The resource will also integrate with Ontario Health Enterprise Pub/Sub and develop a ReactJS application that enables EMR users to create physician-specific OCRE FHIR Subscriptions by translating user preferences into Pub/Sub filter criteria.

The solution must use OAuth 2.0 and mutual TLS (mTLS) and be packaged for containerized deployment using Docker.

Required Experience

Senior-level hands-on experience developing Java and Spring Boot services and REST APIs, including use of the HAPI FHIR library to process FHIR R4 and DSTU2 resources.
Hands-on experience with NextGen Connect (Mirth), HL7 v2 message processing, transformation, validation, routing, acknowledgements, and integration with Java services.
Experience with the Ontario HRM Standard and hospital clinical report exchange workflows.
Strong ReactJS development experience building production user interfaces and integrating them with Java/Spring Boot services and FHIR APIs.
Experience with FHIR Subscriptions and event-driven integrations, including translating physician-level user preferences into filter criteria for FHIR R4B or R5 Subscriptions, with OAuth 2.0 and mTLS for secure service-to-service and application integration.

Responsibilities

Design, develop, test, and support the Java Spring Boot server that will replace the legacy HRM solution within OCRE.
Use HAPI FHIR to parse, validate, transform, create, and process FHIR R4 and DSTU2 resources used by OCRE services and integrations.
Develop and maintain NextGen Connect (Mirth) channels that receive and process HL7 v2 messages and securely send the resulting content to Java services.
Implement clinical report processing, routing, acknowledgements, exception handling, and operational controls in accordance with the Ontario HRM Standard.
Integrate OCRE services with Ontario Health Enterprise Pub/Sub and the applicable FHIR Subscription workflows.
Develop and support a ReactJS application that allows EMR users to manage OCRE subscription preferences for individual physicians.
Translate preference selections captured in the user experience into valid FHIR Subscription and Ontario Health Enterprise Pub/Sub filter criteria.
Implement OAuth 2.0, mTLS, authorization controls, secure configuration, audit logging, and privacy-aware handling of clinical information.
Package and configure application components as Docker containers and support their deployment, configuration, monitoring, and troubleshooting.
Create and maintain unit, integration, interface, conformance, regression, and end-to-end tests across HL7 v2, FHIR, Pub/Sub, backend, and ReactJS components.
Collaborate with architecture, product, UX, security, privacy, QA, operations, and EMR integration stakeholders to refine requirements and deliver production-ready functionality.
Prepare technical designs, interface specifications, message and resource mappings, configuration documentation, deployment notes, runbooks, and knowledge-transfer materials.

Desired Skills

Experience modernizing a hospital clinical report exchange platform, with detailed knowledge of Ontario HRM specifications, routing, acknowledgements, exception handling, and conformance.
Experience with FHIR Subscription and Subscription Topic concepts, subscription filtering, practitioner-based routing, and FHIR profile validation using HAPI FHIR tooling.
Experience designing accessible ReactJS user experiences for configuration, preference management, or administrative workflows.
Experience with automated build, test, container scanning, and deployment pipelines for Java, ReactJS, NextGen Connect, and Docker components.
Experience supporting production healthcare integrations, including observability, reconciliation, incident investigation, replay or recovery procedures, and operational documentation.

Rated Criteria

Java, Spring Boot, REST API, and HAPI FHIR Experience – 25 Points: Experience designing and implementing production services that process FHIR R4 and DSTU2 resources.
NextGen Connect (Mirth), HL7 v2, and Ontario HRM Standard Experience – 25 Points: Experience with message transformation, validation, routing, acknowledgements, error handling, and Java-service integration.
ReactJS, FHIR R4B Subscriptions, and Subscription Filter Criteria – 25 Points.
OAuth 2.0, mTLS, Docker, Secure Application Development, Automated Testing, Deployment Support, and Production Troubleshooting – 25 Points.

Deliverables

A production-ready Java Spring Boot server that implements the assigned OCRE capabilities and supports replacement of the legacy HRM solution.
HAPI FHIR components for parsing, validating, transforming, creating, and processing FHIR R4 and DSTU2 resources.
NextGen Connect (Mirth) channels and configurations for HL7 v2 ingestion, processing, validation, routing, acknowledgement handling, and integration with Java services.
Ontario HRM Standard mappings, processing rules, conformance artifacts, and exception-handling components required by the assigned workflows.
Integration components connecting OCRE services with Ontario Health Enterprise Pub/Sub and the applicable FHIR Subscription workflows.
ReactJS components that allow EMR users to create and manage physician-specific OCRE subscription preferences.
Preference-to-filter mapping logic that produces valid FHIR Subscription and Ontario Health Enterprise Pub/Sub filter criteria.
OAuth 2.0, mTLS, secure configuration, audit logging, and Docker packaging required for deployment and operation of the solution.
Unit, integration, interface, conformance, regression, and end-to-end test assets, together with defect fixes and release validation support.
Technical designs, API and interface specifications, message and resource mappings, configuration notes, deployment instructions, runbooks, demos, and release-support materials.

Additional Terms

The term of this Engagement Assignment is for 124 Business Days, with an option to extend for up to an additional 64 days at the Agency's discretion. The Engagement Assignment may be extended for unused Business Days at the Agency's discretion.

The resource will comply with the Agency's policies and procedures.

Assignment Type: This position is currently listed as "Hybrid". The resource under this request will be required to work onsite as per the Hiring Manager's sole discretion.

Location: Onsite as needed basis.

Public Sector Experience: Must Have.

How to Apply

If you are interested and your profile matches the requirements, kindly send the following mandatory documents to hrsmss@smsoftconsulting.com by Monday, October 26, 2026, at 12:00 PM EST.

Mandatory Documents

Updated Resume in Word format.
Skills Matrix and References.
Expected Hourly Rate.
Visa Status.
LinkedIn ID.

Without the mandatory documents, we cannot submit a candidate.

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More about this job

Responsibilities

Design, develop, test, and support a Java Spring Boot solution to replace the legacy Hospital Report Manager, processing HL7 v2 messages and FHIR resources and integrating with Ontario Health Enterprise Pub/Sub. Build ReactJS subscription-management features, implement secure containerized delivery, support production operations, and prepare technical documentation and tests.

Requirements

Requires senior-level hands-on experience with Java, Spring Boot, REST APIs, HAPI FHIR, production FHIR R4 and DSTU2 processing, NextGen Connect (Mirth), HL7 v2, and the Ontario HRM Standard. Candidates must also have ReactJS and FHIR Subscription experience, understand OAuth 2.0 and mTLS, and be able to deliver Docker-based applications with automated testing and production support.

Skills

Java
Spring Boot
REST APIs
HAPI FHIR
FHIR R4
FHIR DSTU2
NextGen Connect (Mirth)
HL7 v2
ReactJS
Ontario HRM Standard
FHIR Subscriptions
Ontario Health Enterprise Pub/Sub
OAuth 2.0
Mutual TLS (mTLS)
Docker
Automated Testing

Visa sponsorship

Not detected in the job text

Keywords

Java
Spring Boot
REST APIs
HAPI FHIR
FHIR R4
FHIR DSTU2
FHIR R4B
FHIR R5
NextGen Connect (Mirth)
HL7 v2
Ontario HRM Standard
ReactJS
FHIR Subscriptions
Subscription Topics
Ontario Health Enterprise Pub/Sub
OAuth 2.0
Mutual TLS (mTLS)
Docker
Healthcare Integration
Electronic Medical Records
Clinical Report Exchange
Message Transformation
Message Routing
FHIR Profile Validation
Automated Testing
Audit Logging
Production Troubleshooting
Containerized Deployment
Configuration Management
Privacy-Aware Data Handling

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