Full -Stack .NET Extranet Developer

A Quebec-based insurance company is expanding its Extranet teams and is looking for developers to fix, modernize, and enhance portals for its clients, brokers, and partners, in a Microsoft cloud environment that blends modern technologies with outdated systems.

The work is hands-on: delving into a large codebase, delivering fixes and small features, and contributing to the ongoing modernization.

What we're looking for:

• 5+ years of experience in C# .NET back-end development
  


• Experience with secure web portals or public-facing applications
  


• Experience with Microsoft and cloud environments, including Azure DevOps
  


• Proficiency with general front-end architectures, MVC, HTML, CSS, and JavaScript
  


• Daily use of AI and GitHub Copilot for code exploration and development
  


• Autonomy, resourcefulness, and a passion for delving into existing systems
  


• Technologies such as Kafka, Kong, React, or MongoDB are assets, not prerequisites.
  

• Client is strengthening its Extranet teams as part of a priority security initiative, focused in the short term on vulnerability management and reducing obsolescence, with the occasional addition of features to the portals for customers, brokers, and dealers.
  


• The work is primarily execution-oriented: fixing existing issues, delivering small features, and working within a large codebase.
  


• The ideal candidate will have strong back-end development experience in C# .NET, with at least 5 years of experience, ideally gained on secure, public-facing web portals (government, banking, insurance, or similar sectors).
  


• The environment is Microsoft and cloud-based (Azure DevOps Services), with a modern containerized infrastructure (Docker, Kubernetes) and some legacy components (older .NET versions) currently being modernized.
  


• The framework is Scrum, with three-week sprints. The front-end is general-purpose (MVC, HTML, CSS, JavaScript), with React being a valuable asset. Daily use of AI (GitHub Copilot) for code exploration and development is non-negotiable.
  


• The integration stack (Kafka, Kong, BizTalk), MongoDB, and token management are skills that can be learned and are considered assets; token experience is desired in at least one team member but not required of all. Different profiles should not be confused: front-end-only developer, middleware specialist without a .NET foundation, junior profile.
  
  

Requirements

Requirements Qualification Table

Requirement | Aggregation Logic | Expected Coverage

• C# .NET back-end development, 5+ years | Mandatory | All requirements
  


• Development of secure web portals or publicly exposed applications | Mandatory | All requirements
  


• Microsoft and cloud environment, Azure DevOps Services | Mandatory | All requirements
  


• Proficiency with AI on a daily basis, GitHub Copilot, code exploration and development (eliminatory) | Elimination criterion | Mandatory condition
  

DESIRED

• Generalist front-end, MVC, HTML, CSS, JavaScript | Mandatory | All requirements
  


• MS SQL databases | Mandatory | All requirements
  


• Modern containerized infrastructure, Docker and Kubernetes | List of examples | Sufficient majority
  


• Proficiency in mixed, modern and legacy (older .NET versions) environments | Mandatory | All requirements
  

ASSET

• Authentication and authorization, management and Token enrichment, OAuth (ideally for at least one resource in the package) One option is sufficient. Sufficient majority.
  


• Kafka, event handling One option is sufficient. Sufficient majority.
  


• Kong, API exposure One option is sufficient. Sufficient majority.
  


• BizTalk, decommissioning support One option is sufficient. Sufficient majority.
  


• MongoDB databases One option is sufficient. Sufficient majority.
  


• React front-end One option is sufficient. Sufficient majority.
  


• Observability, Dynatrace or equivalent tool One option is sufficient. Sufficient majority.
  

Note: The foundation relies on strong C# .NET back-end development in the context of secure portals, within a Microsoft cloud environment. The integration stack, MongoDB, and React are learned and these remain assets. Token experience is preferred by at least one team member, but not required of everyone.

WHAT WE DON'T WANT

• Developer without a solid foundation in C# .NET back-end development.
  


• Candidate with less than 5 years of experience.
  


• Candidate unwilling to use AI or GitHub Copilot to explore code and develop.
  


• Developer without experience in exposed web applications or client-facing portals.
  


• Front-end only profile, or middleware specialist without a .NET application development foundation.