Contract jobs in Markham, Ontario

Find contract jobs in Markham, Ontario and nearby towns within 25 km. Read the full details and apply.

Newest first

Within 25 km of Markham

Added 2 days ago
RQ11743 - Systems Testing/QA Specialist - Senior
Maarut
Toronto, ON
Added 2 days ago
Property Accountant – 12 months
The Mason Group - Strategic Search Partners
Richmond Hill, ON
Added 2 days ago
Housekeeping Supervisor (Temporary, Full-time Contract) - Delmanor Aurora
Tridel Group of Companies
Aurora, ON
Added 2 days ago
Production Engineer
ExcelGens, Inc.
Toronto, ON
Added 2 days ago
CN
Community Dance Coordinator
Canada's National Ballet School
Toronto, ON
- $45,000 to $50,000 CAD / year
Added 2 days ago
Logistics & Operations Assistant (Toy Market)
Yonge Street Mission
Toronto, ON
Added 3 days ago
Senior Accountant
Vaco by Highspring
Markham, ON
Added 3 days ago
Engagement and Retention Specialist
Polycultural Immigrant & Community Services
Toronto, ON
Added 3 days ago
C
Organizational Change Management Specialist
Collabera
Toronto, ON
- $30 to $36 CAD / hour
Added 3 days ago
RQ00795 - Software Developer - Senior
Maarut
Toronto, ON
Added 3 days ago
RQ00813 - DevOPS/Cloud Engineer - Senior
Maarut
Toronto, ON
Added 3 days ago
RQ00811 - Software Developer - Full Stack - Senior
Maarut
Toronto, ON
Added 3 days ago
RQ00789 - Systems Testing/QA Specialist - Senior
Maarut
Toronto, ON
Added 3 days ago
RQ00824 - Security Architect - Senior
Maarut
Toronto, ON
Added 3 days ago
RQ00812 - Business Intelligence Specialist - Oracle - Senior
Maarut
Toronto, ON
Added 3 days ago
RQ00816 - Security Specialist - Intermediate
Maarut
Toronto, ON
Added 3 days ago
A
Creative Project Specialist [AQ-23352]
Aquent
Toronto, ON
- $29 to $35 CAD / hour
Added 3 days ago
A
Electrical Technician
Actalent
Markham, ON
- $30 to $35 CAD / hour
Added 3 days ago
R
Senior Recreational Support Worker- Part Time (Contract, Winter Session)
Reena
Vaughan, ON
- $21.76 CAD / hour
Added 3 days ago
R
Recreational Support Worker - Winter Break (Temporary Contract)
Reena
Vaughan, ON
- $19.77 CAD / hour
Added 3 days ago
QC Lead Hand
TreeHouse Foods
Richmond Hill, ON
Added 3 days ago
Cosmetic Merchandiser
Match Retail
Markham, ON
Added 3 days ago
SC
Lead Hand, Starbucks Retail Food Services - General Helper (Full-Time, 1-Year Contract) (34444001)
Sodexo Canada Ltd
Vaughan, ON
- Up to $21.69 CAD / hour
Added 3 days ago
Litigation Clerk
Spetter Zeitz Klaiman PC
Toronto, ON
Added 3 days ago
T®
Software Developer
TekWissen ®
Vaughan, ON
- $69 to $70 CAD / hour

Maarut

RQ00811 - Software Developer - Full Stack - Senior

Toronto, ON, Canada

Contract

Within 25 km of Markham · About 20 km from the city centre

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Job details

Job type: Contract
Posted: Oct 22, 2026

Original job description

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 in 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 the 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 SubscriptionTopic 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.

Required Skills:

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, mTLS, Docker, automated testing, configuration management, audit logging, and production troubleshooting.

Rated Criteria:

Java, Spring Boot, REST API, and HAPI FHIR experience, including the design and implementation of production services that process FHIR R4 and DSTU2 resources. 25 points
NextGen Connect (Mirth), HL7 v2, and Ontario HRM Standard experience, including message transformation, validation, routing, acknowledgements, error handling, and Java-service integration. 25 points
ReactJS, FHIR R4B Subscriptions, subscription filter criteria. 25 points
OAuth 2.0, mTLS, Docker, secure application development, automated testing, deployment support, and production troubleshooting experience. 25 points

Requirements

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.

Must Haves:

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, mTLS, Docker, automated testing, configuration management, audit logging, and production troubleshooting.

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More about this job

Responsibilities

Design, develop, and maintain a Java Spring Boot server to replace the legacy HRM solution while integrating with FHIR and HL7 v2 standards. Collaborate with cross-functional stakeholders to deliver production-ready clinical report exchange functionality and manage subscription preferences.

Requirements

Requires senior-level experience in Java, Spring Boot, HAPI FHIR, and NextGen Connect (Mirth) for healthcare integration. Candidates must possess strong ReactJS skills and experience with secure application delivery using OAuth 2.0, mTLS, and Docker.

Skills

Java
Spring Boot
REST API
HAPI FHIR
NextGen Connect
Mirth
HL7 v2
ReactJS
Ontario HRM Standard
OAuth 2.0
mTLS
Docker
FHIR Subscriptions
Pub/Sub
Clinical report exchange
System integration

Visa sponsorship

Not detected in the job text

Keywords

Java
Spring Boot
REST API
HAPI FHIR
FHIR R4
DSTU2
NextGen Connect
Mirth
HL7 v2
Ontario HRM Standard
ReactJS
FHIR Subscriptions
OAuth 2.0
mTLS
Docker
Pub/Sub
Clinical report exchange
EMR integration
Audit logging
Containerization
Unit testing
Integration testing
Software development
Healthcare technology
API development
System architecture
Observability
Configuration management
Production support
Technical design

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