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S M Software Solutions Inc

Software Developer – Full Stack – Senior - RQ00788

Toronto, ON, Canada

Job type: Internship
Apply by: Oct 28, 2026
Posting language: English
Posted: Sep 28, 2026

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Original job description

Client: Supply Ontario – RQ00788

We are looking for an experienced Software Developer – Full Stack – Senior with strong expertise in C#, .NET Core, ASP.NET Core, Angular, REST APIs, Microsoft Azure, SQL Server, Azure DevOps, CI/CD, and enterprise application modernization. The ideal candidate will have extensive hands-on experience developing enterprise-grade applications, modernizing legacy systems, designing scalable solutions, developing secure APIs, and delivering high-performing front-end and backend solutions within large enterprise environments.

Role Snapshot

Job Title: RQ00788 – Software Developer – Full Stack – Senior

Client: Supply Ontario

Work Location: 525 University Avenue, Toronto, Ontario, Canada – Hybrid

Estimated Start Date: October 19, 2026

Estimated End Date: October 4, 2027

Business Days: 250.00

Job Type: Hybrid

Hours: 7.25 hours per day (5 Days)

Extension: Probable after the initial mandate

Must Have

Modernization & Legacy Transformation Experience: Demonstrated experience decomposing monolithic applications into modular services, APIs, or microservices. Experience developing modernization roadmaps and executing phased migrations with minimal business disruption.
.NET Core / Backend Engineering Expertise: Advanced expertise in ASP.NET Core, REST API development, dependency injection, authentication/authorization, performance optimization, and enterprise application architecture.
Angular Front-End Development Expertise: Experience designing and developing Angular applications, component-based architecture, state management, responsive UI design, and integration with REST services.
Solution Architecture & Design Skills: Ability to design scalable, maintainable, secure, and loosely coupled solutions. Experience with DDD, API-first design, event-driven architecture, integration patterns, and modular architecture.

Description

The Enhancing Home and Community Care (HCC) Digital Connectivity program is executing a multi-year strategy to modernize the HCC digital ecosystem, reduce dependency on the Client Help and Related Information System (CHRIS) platform, and establish the technical foundations for a future-state home care platform. Current plans require the Agency to rationalize existing CHRIS functionality and progressively decompose the platform's monolithic architecture into modular, interoperable services that can integrate with next-generation digital solutions.

To support this transformation, the Agency requires the procurement of three Senior Software Developers responsible for designing, developing, enhancing, and maintaining enterprise-grade web applications and backend services. These resources require extensive experience with the Microsoft technology stack, modern web development frameworks, Azure cloud services, SQL Server, and API development. They will contribute to solution development and support the delivery of secure, scalable, and high-performing software solutions.

Responsibilities

Design, develop, test, deploy, and maintain enterprise applications using .NET, AngularJS, JavaScript, and related technologies.
Develop and integrate secure REST APIs and modernize legacy .NET Framework, WCF, Windows Services, and Windows Forms applications.
Build responsive web user interfaces and implement secure authentication using JWT/OAuth2.
Develop high-performance, multithreaded, and asynchronous applications.
Develop, configure, and support Azure cloud services, including App Services, Azure SQL, Storage, Event Hub, ADX, Key Vault, and monitoring solutions.
Develop and optimize SQL Server databases, including complex queries, stored procedures, indexing, execution plans, and performance tuning.
Perform application testing, production troubleshooting, root-cause analysis, and performance optimization across application, database, cloud, and infrastructure layers.
Support DevOps and CI/CD processes using Azure DevOps and Git-based source control.
Conduct code reviews and ensure high-quality, maintainable, secure, and well-documented software.
Collaborate with architects, analysts, QA, infrastructure teams, and business stakeholders on technical design and solution delivery.
Contribute to application modernization and migration of legacy systems to modern Azure-based platforms.

Required Skills

C# / .NET Development

10+ years of hands-on experience developing enterprise applications using C#, .NET Core/ASP.NET Core, and ASP.NET Framework 3.5/4.x, including modernization of legacy .NET applications.

REST API Development & Security

Strong experience designing, developing, integrating, and troubleshooting RESTful APIs, including JWT, OAuth2, authentication, and authorization.

Angular / Front-End Development

Strong experience with AngularJS, JavaScript, HTML, CSS, jQuery, and ASP.NET MVC, with experience migrating legacy AngularJS applications to modern Angular preferred.

Microsoft SQL Server & Database Development

Strong T-SQL development skills, including stored procedures, views, triggers, indexing, query optimization, execution plans, and database performance tuning.

Microsoft Azure Cloud Development

Hands-on experience with Azure App Service, Azure SQL Managed Instance, Azure Storage, Event Hub, Azure Data Explorer (ADX), Key Vault, Application Insights, and Azure Monitor.

Azure DevOps & Git

Experience with Azure DevOps, CI/CD pipelines, automated deployments, release management, GitHub, and/or Azure Repos.

Performance, Multithreading & Scalability

Strong experience with multithreaded and asynchronous programming, parallel processing, application performance optimization, and scalability across application and database layers.

Production Troubleshooting & Testing

Strong troubleshooting and root-cause analysis skills using KQL, Postman, SoapUI, Swagger/Open API, IIS, application logs, monitoring tools, and database diagnostics.

Legacy Application Modernization

Experience maintaining and modernizing ASP.NET Framework, Windows Services, WCF/Web Services, Windows Forms, and IIS-hosted applications; Tomcat troubleshooting is an asset.

Software Engineering & Architecture

Strong knowledge of object-oriented programming, design patterns, software architecture, SDLC, Agile/Scrum, code reviews, clean code, and secure/maintainable software development practices.

Desired Skills

Healthcare System Integration: Experience developing and supporting integrations between healthcare applications and systems.
HL7: Familiarity with HL7 standards and healthcare messaging, including experience troubleshooting HL7 interfaces.
FHIR: Knowledge of FHIR standards, resources, APIs, and modern healthcare interoperability.
Mirth Connect: Hands-on experience developing, configuring, monitoring, and troubleshooting Mirth Connect channels and integrations.

Rated Criteria

Modernization & Legacy Transformation Experience – 20 Points

Demonstrated experience decomposing monolithic applications into modular services, APIs, or microservices. Experience developing modernization roadmaps and executing phased migrations with minimal business disruption.
NET Core / Backend Engineering Expertise – 20 Points
Advanced expertise in ASP.NET Core, REST API development, dependency injection, authentication/authorization, performance optimization, and enterprise application architecture.

Angular Front-End Development Expertise – 15 Points

Experience designing and developing Angular applications, component-based architecture, state management, responsive UI design, and integration with REST services.

Solution Architecture & Design Skills – 15 Points

Ability to design scalable, maintainable, secure, and loosely coupled solutions. Experience with DDD, API-first design, event-driven architecture, integration patterns, and modular architecture.

Cloud, DevOps & CI/CD Experience – 10 Points

Experience deploying applications in Azure, implementing CI/CD pipelines, Infrastructure as Code, containerization, automated testing, and application monitoring.

Quality Engineering & Secure Development – 10 Points

Demonstrated use of automated testing, code quality tools, security best practices, threat mitigation, and technical debt reduction strategies.

Communication & Team Collaboration – 10 Points

Ability to work with architects, product owners, business analysts, and development teams. Experience mentoring developers and clearly communicating technical decisions.

Deliverables

Develop functionalities per business requirements.
Migrate applications from .NET Framework 4.x to .NET Core/.NET.
Design, develop, and implement secure RESTful APIs.
Develop modern Angular web front-ends and migrate existing AngularJS applications to Angular.
Develop and optimize data access and database operations, including query and performance optimization.
Conduct performance testing and tuning to improve application scalability, responsiveness, and reliability.
Implement and enhance application security, including authentication, authorization, and secure API practices.

Additional Terms

The term of this Engagement Assignment is for 250 Business Days, with an option to extend for up to an additional 250 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.

The resource will be issued an Agency laptop and is expected to provide at least one additional monitor, an external keyboard and a mouse at their own expense. In addition, when the resource is working from their home location, they must have a private office space and are not permitted to work in an open communal space. Internet connection must be hard-wired and suitable bandwidth to support the IT requirements of this role. If these conditions cannot be met within their home office space, the resource will transition to full time in office, and the hybrid option will no longer be available.

The Agency systems cannot be accessed from outside the province of Ontario, and Agency assets including laptops and related equipment cannot be removed from the province of Ontario, without prior written approval from the Agency.

Assignment Type

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

Location

Up to 3 days onsite (subject to HM’s discretion).

Preferred

Public Sector Experience

How To Apply

If you are interested and believe your profile matches this opportunity, please send the following mandatory documents to hrsmss@smsoftconsulting.com by Tuesday, September 29, 2026, at 10:00 AM EST.

Without the mandatory documents, we cannot submit a candidate.

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

Documents required: Updated Resume in Word format, Expected Hourly Rate & Qualification Matrix.

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Note

This position is currently listed as "Hybrid". The resource will be required to work onsite for up to 3 days per week, subject to the Hiring Manager’s discretion.

The resource must comply with the Agency’s policies and procedures. Agency systems cannot be accessed from outside the province of Ontario, and Agency assets including laptops and related equipment cannot be removed from the province of Ontario without prior written approval from the Agency.

Email is the best way to reach us.

You have received this message either as a result of contacting our company to express interest in employment or as a result of posting your resume in a location that can be accessed by recruiters or HR specialists, which suggests an interest in being contacted about employment opportunities.

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More about this job

Responsibilities

Design, develop, test, deploy, and maintain enterprise applications, secure REST APIs, and modern Angular interfaces while modernizing legacy .NET systems and migrating applications to Azure. Optimize databases and application performance, support CI/CD and production troubleshooting, and collaborate with technical and business teams to deliver secure, scalable solutions.

Requirements

Requires 10+ years of enterprise C# and .NET development experience, including ASP.NET Core, REST API security, SQL Server, Azure services, and legacy application modernization. Candidates should also have strong Angular and software architecture skills, experience with Azure DevOps and CI/CD, and expertise in performance, testing, and production troubleshooting.

Skills

C#
.NET Core
ASP.NET Core
Angular
AngularJS
REST APIs
Microsoft Azure
SQL Server
Azure DevOps
CI/CD
Legacy Application Modernization
Microservices
Authentication and Authorization
Performance Optimization
Healthcare Integration
HL7

Visa sponsorship

Not detected in the job text

Keywords

C#
.NET Core
ASP.NET Core
ASP.NET Framework
Angular
AngularJS
JavaScript
REST APIs
JWT
OAuth2
Microsoft Azure
Azure App Service
Azure SQL
Azure Storage
Event Hub
Azure Data Explorer
Key Vault
Application Insights
Azure Monitor
SQL Server
T-SQL
Azure DevOps
CI/CD
Git
Microservices
Domain-Driven Design
Event-Driven Architecture
Healthcare Integration
HL7
FHIR

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