RQ00781 - Senior Full-Stack .NET Developer (React and Azure)

Job Title: RQ00781 - Senior Full-Stack .NET Developer (React and Azure)

Client: Ontario Health

Contract Duration: 4 months

Duration: 2026-10-01 - 2027-03-31

Working Status: 3 days onsite

Location: 525 University Avenue, Toronto, Ontario

Manager Notes Must Haves: (Certifications are highly preferred)

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

Preferred:

• Public Sector Experience

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:

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