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Added 6 mins ago
Nuclear Services Programmer
ATS Automation
Cambridge, ON
…responsibility for controls software systems, with input and support for controls hardware and mechanical…
Added 6 mins ago
Senior Data Architect
fgf brands
Toronto, ON · Greater Toronto Area, ON
Other
…platform - the core engine that turns computer vision streams into production intelligence. This senior leadership role demands deep technical expertise in designing and operating…
Added 6 mins ago
Senior Software Engineer - Credit Commercial Engineering
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Added 6 mins ago
Manager, Data Engineering
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Added 6 mins ago
AI Engineer
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$80,000 to $100,000 CAD / year
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Added 6 mins ago
Chef Manager (University Campus)
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$60,000 to $70,000 CAD / year
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Added 20 mins ago
Functional IT Analyst/BA
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▸ Prepare and execute functional and integrated tests and support acceptance tests.
Added 20 mins ago
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Added 20 mins ago
Senior Application Support Analyst
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5+ years of experience in Application Support, Production Support, or a related technology support role.
Added 20 mins ago
REQ26 -153 - Intern Underground Mining Engineering
Glencore
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Added 20 mins ago
Underground Heavy Duty Mechanic (Beat Mechanic)
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…Members must clearly identify their status on the online job application and resume if they wish to receive priority…
Added 20 mins ago
Mill Operator (14x14 rotation)
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…Members must clearly identify their status on the online job application and resume if they wish to receive priority…
Added 20 mins ago
Full Stack Engineer (.NET/ Angular)
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$85 to $95 CAD / hour
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Added 20 mins ago
Software Developer - Amdocs Clarify CRM/Java
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Troubleshoot complex application and production issues and improve platform stability and performance.
Added 20 mins ago
AI Solution Architect
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Added 21 mins ago
Production Operator – Paper Coating
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Added 35 mins ago
GenFX Lead
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$132,000 to $170,000 CAD / year
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Added 50 mins ago
Sr Software Engineer
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Contribute to software architecture, application support, and continuous improvement initiatives.
Added 50 mins ago
Digital Architect
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The CTS Applications, Data & AI team provides architecture leadership, application lifecycle management, business analysis, solution delivery oversight, data and AI enablement, and…
Added 50 mins ago
Web Project Coordinator
Rexel Canada
Mississauga, ON
$50,000 to $70,000 CAD / year
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In this role, you will perform regular and production-release testing of our webshops and mobile apps, identify and document issues, and coordinate bug resolution with HQ teams. You will…
Added 50 mins ago
Application Support Manager
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Full-time
CategorySkills: Must‐Have Skills• 8–12+ years in Application Support / Production Management within BFSI• 3–5+ years in a technical people‐management or service delivery 1lead role• Deep…
Added 50 mins ago
Accounting Assistant III
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$55,000 to $65,000 CAD / year
Full-time
Ensure timely release or resolution of orders on hold to optimize production and customer delivery.
Added 51 mins ago
Catering Attendant - In-Flight Kitchen
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Whitehorse, YT
…North's In-Flight Kitchen. The incumbent ensures daily meal production follows specifications and quantities while maintaining a clean and organized…
Added 1 hour ago
Process Technician – Paint - Weekend Nights
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Full-time
…Paint you will be involved in the preparation and the spray application of primer along with topcoat, and sealant on aircraft components machined on…
Added 1 hour ago
Web Project Coordinator
REXEL
Mississauga, ON
$50,000 to $70,000 CAD / year
Full-time
In this role, you will perform regular and production-release testing of our webshops and mobile apps, identify and document issues, and coordinate bug resolution with HQ teams. You will…

StafinGo

Senior Full Stack Developer

Toronto, ON, Canada

Pay: $80 to $100 CAD / hour
Job type: Contract
Apply by: Oct 22, 2026
Posting language: English
Posted: Sep 22, 2026

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Applications open in a new tab.

Original job description

Hiring: Senior Full Stack Developer

Location: Toronto, Ontario, Hybrid (3 days per week in office)

Duration: October 19, 2026 – October 4, 2027 (possibility to extend)

Hourly Rate: $80/hour - $100/hour (based on experience)

Client: Public Sector - Healthcare

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.

Deliverables include, but are not limited to:

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.

Must Haves:

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.

Additional Qualifications and Experience:

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/OpenAPI, 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 anasset.
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.

We appreciate all interest; however, only candidates whose experience fully meets the posted requirements will be considered.

Interested?

If you meet the above criteria apply now!

**AI is not being used in the application/recruitment process for this position**

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More about this job

Responsibilities

Design, develop, and maintain enterprise applications while modernizing legacy .NET systems to modern Azure-based platforms. Collaborate with cross-functional teams to implement secure REST APIs, optimize database performance, and support CI/CD processes.

Requirements

Requires over 10 years of experience in C# and .NET development with a strong background in legacy system modernization and cloud migration. Candidates must possess advanced expertise in Angular front-end development, Azure cloud services, and SQL Server database optimization.

Skills

C#
.NET Core
Angular
Azure
SQL Server
REST APIs
ASP.NET
Azure DevOps
CI/CD
Microservices
Multithreading
Performance Tuning
JavaScript
TypeScript
System Architecture
Cloud Migration

Visa sponsorship

Not detected in the job text

Keywords

C#
.NET Core
Angular
Azure
SQL Server
REST API
Microservices
Azure DevOps
CI/CD
ASP.NET
JavaScript
HTML
CSS
T-SQL
JWT
OAuth2
Cloud Migration
Multithreading
Performance Tuning
Software Architecture
Agile
Scrum
Healthcare Integration
HL7
FHIR
Mirth Connect
WCF
IIS
Azure SQL
Key Vault

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