Software Developer - Full Stack - Senior ( RQ00781 )

S M Software Solutions Inc; Toronto; Hybrid; CAD 110,000 - 150,000; Full time

Job summary

Supply Ontario seeks a Senior Software Developer - Full Stack to design, build, and support a Cancer Screening Portal using .NET and React. You will collaborate across teams to deliver scalable APIs, microservices, and user-friendly interfaces while mentoring peers and aligning with architecture standards.

The role emphasizes cloud services, Azure pipelines, DevOps practices, and healthcare data considerations. Hybrid work is available, with onsite collaboration in Toronto.

Qualifications

• Proven experience with .NET and React in enterprise-grade applications.
• Strong understanding of microservices, RESTful APIs, and distributed systems.
• Hands-on experience with Azure cloud services and DevOps pipelines.

Responsibilities

• Provide technical guidance to project teams and ensure high-quality deliverables.
• Mentor junior developers and review design decisions and code.
• Develop and document APIs, architectures, and workflows.
• Collaborate with product management to define requirements and roadmaps.
• Ensure system performance, security, and compliance in healthcare contexts.

Skills

React 18

ASP.NET Core

Azure APIM

Azure Service Bus

Azure Containers Apps

Azure DevOps

Microservices/Docker

SQL Server

Redis

Git

Tools

Azure DevOps

Docker

SQL Server

Redis

Git

Azure APIM

Job description

We trust you are doing well. We are reaching you out to bring an incredible job opportunity to your attention, one that will truly captivate your interest.

Job Title RQ00781 - Software Developer - Full Stack - Senior

Start Date 2026-10-01

Client Supply Ontario

End Date 2027-03-31

Work Location 525 University Avenue, Toronto, Ontario, Canada

#Business Days 125.00

Job Type Hybrid

Hours Per Day Or Week 7.25 hours per day (5 Days)

Must Haves

• React 18/ HTML 5 / CSS
• ASP.NET Core / Minimal API’s / LINQ (.NET 8+)
• Azure APIM
• Azure Service Bus
• Azure Containers Apps/Jobs.

Description

This role will Support the design, development, and ongoing support of a new Cancer Screening Correspondence Portal built with .NET and React technologies. This initiative will transform the existing correspondence system into a fully digital platform.

Responsibilities

• Provides subject matter expertise and technical guidance to project and product teams.
• Delivers the best user experiences possible and is jointly accountable for the quality of the products and services that they deliver for the customers.
• Provides mentoring to specific Software Development I and potentially Software Engineer I to discuss specific engineering practices and problems that may arise during day-to-day work. Provides context and perspective to Software Development I and Software Engineer I regarding engineering design decisions as well as business requirements that influence implementation details.
• Shares new trends and techniques via various forums, like chapters.
• Develops supporting and configuration documentation and provides guidance in delivering technical documentation.
• Provides input and expertise to QA team on application testing.
• Provides work estimates for their own development tasks and verifies work estimates of others.
• Performs code reviews and walkthroughs of system design and developed code.
• Participates in and contributes to requirement definition working sessions, specification development and solution design.
• Develops applications to specifications within the required timeframe and budget.
• Identifies risks and escalates to project/product leadership on a timely basis.
• Pinpoints strengths and weaknesses of various design alternatives and selects or recommends appropriate solutions.
• Proactively suggests alternative methods or resources for getting work done when obstacles arise.
• Reviews systems for completion and system performance objectives.
• Recommends changes across the engineering practices to improve the team's cycle time as well as lead time for the team's product backlog.
• Supports the change in the adoption of new engineering practices.
• Independently engages and actively participates in project-related discussion with product management teams to recommend product features and changes to product features to improve the user experience, operation and maintainability of the product.
• Participates in development of engineering plans and systems specifications with Lead Engineers.
• Collaborates with project members to ensure alignment of practices, patterns, and solutions.
• Ensures work aligns to broader roadmaps and systems strategies.
• Stays abreast of evolving technology, architecture, and design, patterns, practices, and platforms.
• Makes decisions where results have substantial impact across the organization requiring sophisticated solutions and long-term correction. Occasionally has cross-portfolio and external stakeholder interactions.

Required Skills

• Azure DevOps
• Microservices/Docker
• SQL Server / REDIS Cache
• GIT

Desired Skills

• 8 – 10 years of relevant and extensive technical experience developing software solutions.
• 8+ years of experience in .NET development, preferably in healthcare or regulated industries
• Strong understanding of Microservices, RESTful APIs, and distributed systems
• Hands‑on experience working with digital Marketing (Campaigns, Email, Sms, Chatbots).
• Strong on managing and designing API's using Azure APIM.
• Proficiency in React.js, JavaScript/TypeScript, and front‑end best practices
• Proficiency in managing and designing Complex multistage Azure DevOps pipelines.
• Experience with Azure cloud services, including Azure App Container, Azure SQL, Blob Storage, Key Vault, Azure APIM, Azure Service Bus
• Experience with developing and managing .NET-based message producers and consumers using the Azure Service Bus SDK.
• Experience with using and developing and maintaining monitoring tools in Azure (Application insights, Log Analytics Etc.)
• Knowledge and understanding of Object‑Oriented Analysis and Design, and Relational Database Analysis & Design (OOD/OOP).
• Hands‑on experience with Azure Service Bus or similar messaging platforms
• Familiarity with healthcare data standards (e.g., HL7, FHIR) is a plus
• Hands‑on experience with CRM is a plus
• Microsoft certifications in Azure or .NET technologies is a plus
• Knowledge of security and compliance in healthcare applications
• Provide support for production systems, ensuring high availability, timely incident resolution, and proactive monitoring to maintain service continuity and performance
• In‑depth knowledge of software development and all aspects of the Software Development Life Cycle (SDLC).
• In‑depth knowledge of distributed system solution development and experience in agile development.
• Subject matter expert of relevant software development tool and framework.
• Knowledge of software security principles.
• Knowledge of quality assurance testing and risk assessment.
• Knowledge of privacy legislation, regulations (specifically the Protection of Personal Health Information Act, Ontario 2004), policies, procedures, guidelines, and communication material relevant to the
• Protection of confidential information
• Knowledge of relational database development techniques.
• Knowledge of system administration and networking (i.e., Windows Server, Linux, IP, firewall).

Deliverables

• Create technical documentation (architecture, APIs, workflows)
• Maintain code‑level documentation and README files
• Provide deployment and rollback procedures
• Document known issues and resolutions

Additional Terms

The term of this Engagement Assignment is for 125 Business Days, with an option to extend for up to an additional 125 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: 3 days onsite

Public Sector Experience: Preferred