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Senior Full Stack .NET Developer - .Net Framework, .Net Core, C#, SQL Server
J&M Group
Toronto, ON
Contract
Role: Senior Full Stack .NET Developer - .Net Framework, .Net Core, C#, SQL Server
Développeur(euse) logiciel .NET / .NET Software Developer
Genetec
Montreal, QC
$65,000 to $115,000 CAD / year
Full-time
Travailler sur les composants FrontEnd et BackEnd du produit en utilisant toutes les technologies principales du Framework .NET
Développeur(euse) logiciel .NET / .NET Software Developer
Genetec
Remote, Canada
Full-time · Remote
Travailler sur les composants FrontEnd et BackEnd du produit en utilisant toutes les technologies principales du Framework .NET
Why Senior C# .NET Developers are like apples.
Mongoose Gray
Toronto, ON
Full-time
The Senior C# .NET Developer will work for a fast-paced SaaS scaleup.
Sr. .Net Developer
J&M Group
Toronto, Ontario
Contract
Responsibilities & Skill Requirements Core .NET Development
.NET Developer Team Leader
Speranza International
Leader, SK
Full-time
We are seeking an experienced .NET Developer Leader to join our team. The ideal candidate will have a solid background in .NET development, with proven experience in system architecture…
Dot Net Developer 1016
Veracity Ventures Inc.
Remote, Canada
Full-time · Remote
We are looking for an experienced .NET Developer with 5+ years of software development experience and strong banking/financial services domain knowledge.
Senior .Net Developer
Mindtris
St. John's, Newfoundland and Labrador · Greater St. John's Metropolitan Area
Full-time
The Senior .Net Developer will join the project team to assist with technical design and development, while supporting application work streams across the integration, data, and…
.Net Developer
Pacer Group
Toronto, ON
$45 to $50 CAD / hour
Contract
7+ years of hands-on experience in .NET Development, with strong expertise in C#, ASP.NET, .NET Core/.NET 6+, and Web API development.
.NET Developer
J&M Group
Toronto, Ontario
Contract
We are looking for a Senior .NET Developer with deep expertise in banking domain and microservices architecture to join our growing engineering team. You will design, build, and maintain…
Senior .NET Developer
Citi
Mississauga, ON
Full-time
.Net Expertise: Strong experience and knowledge in .Net Core Web development, C# preferred
Senior .NET Developer
Symbiotic Digital
Toronto, Ontario · Downtown Toronto (Central Bay Street), Ontario
Contract
We are seeking a Senior Full Stack Software Developer to
.Net Developer (OpenShift)
Apptoza Inc.
Toronto, ON
Temporary
Design, develop, implement, and maintain technical solutions supporting legacy .NET applications on Windows 10/11 and Windows Servers, including desktop application components.
Senior .NET Developer
Cognizant
Halifax, NS
$61,000 to $100,000 CAD / year
Full-time
Cognizant is seeking a Senior .NET Developer within 5-7 years of deep expertise in application security, vulnerability remediation, and secure software development practices. This role is…
Senior .NET Developer
Rentsync
Toronto, ON
$100,000 to $120,000 CAD / year
As our Senior .NET Developer you’ll architect and ship cloud-native APIs on .NET 8+ and Azure, set the engineering standard across the team, and lead how we put AI development tools to work…
Senior .NET Developer – Application Security
Cognizant
Halifax, NS
Full-time
As a Senior .NET Developer, you will make an impact by strengthening the security posture of enterprise applications through vulnerability analysis, remediation, and secure software…
Senior .NET Developer - Kafka
Tamanna Technology
Toronto, ON · Greater Toronto Area, Canada
Contract
We are seeking a highly skilled .NET C# developer with deep expertise in Kafka, modern .NET (Core/6/7+), and experience across frontend, cloud (Kubernetes), and DevOps. Experience with…
Added 2 hours ago
Full Stack Developer (.NET, C#, SQL, React, and Azure Databricks)
CIBC
Toronto, ON
Full-time
…projects involving multiple back-end systems. As a Full Stack Developer, you’ll assemble, implement and maintain easy, flexible, and personalized solutions that enhance the client…
Full Stack .NET Developer
Iris Software Inc.
Toronto, ON
Full-time
…financial services corporation is looking to hire a Full Stack .NET Developer Our direct client is a is a world-leading financial services company, provides consumers, corporations,…
Full Stack Developer - .NET
AIIM
Toronto, ON
Full-time
Reporting to the VP, Solutions & Delivery, we are looking for a talented and motivated Full Stack Developer – .NET to join our development team. The ideal candidate will have strong…
.Net Developer
Kumaran Systems
Toronto, ON
Full-time
We are seeking an experienced Full Stack .NET
Sr. .Net Developer
J&M Group
Toronto, ON
Contract
We are looking for a Senior .NET Developer with strong C#, .NET Core, REST/SOAP, OAuth, legacy application modernization, and cloud/Windows experience.
Mobile Developer (.NET MAUI)
BusPlanner
Remote, Canada
Full-time · Remote
We are looking for a Mobile Developer who will take full, end-to-end ownership of the BusPlanner mobile application portfolio. This is not a role where someone else builds the platform and…
Senior .NET Developer
BrainStation
Vancouver, British Columbia · Toronto, Ontario
Full-time
As a Senior .NET Developer you'll be tasked with working on web application development in C# and .NET. Working within the software development team, your duties will require you to assist…
.Net Developer
J&M Group
Vancouver, BC
Full-time
We are looking for a Senior .NET Developer with 10+ years of experience to build and maintain secure, scalable enterprise applications.

AIIM

Full Stack Developer - .NET

Toronto, ON, Canada

Job type: Full-time
Apply by: Oct 10, 2026

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At a glance

Automatically prepared from the listing. Check the original description for the full requirements.

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Responsibilities

Design, develop, and maintain full-stack web applications using the .NET ecosystem and modern front-end frameworks. Collaborate with cross-functional teams to deliver scalable solutions, manage data integration workflows, and ensure high application quality through testing and DevOps practices.

Requirements

Requires 3–7+ years of professional software development experience with strong proficiency in C#, .NET, and modern front-end technologies. Candidates must have hands-on experience with SQL Server, RESTful APIs, and cloud platforms like Azure.

Experience

5 to 10 years

Education

bachelor degree

Working hours

40 hours per week

Work arrangement

On-site

Skills

C#
.NET Core
ASP.NET Core
React
Angular
Blazor
SQL Server
RESTful APIs
Azure
TypeScript
JavaScript
Entity Framework Core
CI/CD
Docker
Unit Testing
Clean Architecture

Visa sponsorship

Not detected in the job text

Keywords

C#
.NET Core
ASP.NET Core
Web API
React
Angular
Blazor
SQL Server
Entity Framework Core
Azure
TypeScript
JavaScript
CI/CD
Docker
Git
xUnit
NUnit
RESTful APIs
Clean Architecture
SOLID
XML
XSD
PDF Generation
Microservices
Agile
Scrum
OAuth 2.0
OpenID Connect
JWT
Full Stack

Original job description

Role Purpose

Reporting to the VP, Solutions & Delivery, we are looking for a talented and motivated Full Stack Developer – .NET to join our development team. The ideal candidate will have strong experience building scalable, secure, and high-performance web applications using the Microsoft .NET ecosystem, along with modern front-end technologies.

You will be responsible for designing, developing, testing, deploying, and maintaining end-to-end applications while working closely with product managers, business analysts, QA engineers, DevOps teams, and other developers.

Core Responsibilities

Design, develop, and maintain full-stack web applications using C#, .NET / .NET Core, ASP.NET Core, and Web API.
Build responsive and user-friendly front-end applications using React, Angular, Blazor, or similar modern JavaScript/C# frameworks.
Develop scalable RESTful APIs and integrate third-party services and enterprise systems.
Design and optimize relational databases using SQL Server, including tables, stored procedures, views, functions, and queries.
Implement secure authentication and authorization using technologies such as OAuth 2.0, OpenID Connect, JWT, and ASP.NET Core Identity.
Process and transform large fixed-width and delimited (CSV/flat) input files as part of data integration and batch workflows.
Generate large, well-structured XML output and associated XSD schemas for downstream systems and partners.
Integrate with document/PDF generation platforms such as Quadient, Exstream, or SmartCOMM to support customer communications.
Write clean, maintainable, reusable, and well-tested code following established coding standards and design patterns.
Participate in architecture and technical design discussions and contribute to application modernization initiatives.
Develop unit, integration, and automated tests to ensure application quality and reliability.
Troubleshoot and resolve application defects, performance issues, and production incidents.
Work with DevOps teams to support CI/CD pipelines, automated deployments, monitoring, and cloud infrastructure.
Collaborate with cross-functional teams to understand requirements and translate them into technical solutions.
Conduct code reviews and provide constructive feedback to team members.
Create and maintain technical documentation, API documentation, and development standards.
Stay current with emerging technologies and recommend improvements to development practices and application architecture.

Required Qualifications

Backend

Strong proficiency in C#
Hands-on experience with .NET / .NET Core
Strong experience with ASP.NET Core
Experience developing RESTful Web APIs
Knowledge of Entity Framework Core
Understanding of dependency injection, middleware, configuration, logging, and application lifecycle
Good understanding of object-oriented programming and SOLID principles
Experience with common design patterns and clean architecture principles
Experience processing large fixed-width and delimited input files
Experience generating large XML files and XSD schemas
Experience integrating with PDF generation software such as Quadient, Exstream, SmartCOMM, or similar

Frontend

Strong experience with JavaScript / TypeScript
Hands-on experience with at least one modern framework: React, Angular, Vue.js, or Blazor (C#-based)
Strong knowledge of HTML5, CSS3, and responsive web design
Experience consuming REST APIs and handling client-side state
Familiarity with frontend build tools and package managers such as npm

Database

Strong experience with Microsoft SQL Server
Proficiency in writing complex SQL queries
Experience with stored procedures, functions, views, indexes, and query optimization
Understanding of database design, normalization, transactions, and performance tuning
Experience with Entity Framework Core or another ORM

Cloud & DevOps

Experience with Microsoft Azure or another major cloud platform
Familiarity with Azure services such as Azure App Service, Azure Functions, Azure SQL, Azure Storage, Azure Key Vault, and Azure Service Bus
Experience with CI/CD pipelines
Familiarity with Git-based source control and branching strategies
Experience with Docker and containerization is a plus
Understanding of application monitoring, logging, and observability

Testing & Quality

Experience with unit testing using frameworks such as xUnit, NUnit, or MSTest
Understanding of integration and API testing
Familiarity with mocking frameworks such as Moq
Experience with automated testing and continuous integration
Strong understanding of secure coding and application performance practices

Preferred Skills

Experience with microservices architecture
Knowledge of Azure DevOps or GitHub Actions
Experience with Docker and Kubernetes
Knowledge of messaging technologies such as Azure Service Bus, RabbitMQ, or Kafka
Experience with Redis or other caching technologies
Knowledge of GraphQL is a plus
Familiarity with Elasticsearch or similar search technologies
Experience with Agile/Scrum development methodologies
Understanding of Domain-Driven Design (DDD)
Experience with application performance monitoring tools
Knowledge of AI/ML integrations or consuming LLM APIs is a plus

Qualifications

Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field, or equivalent practical experience.
3–7+ years of professional software development experience, depending on level.
Strong hands-on experience with the .NET ecosystem and modern frontend development.
Demonstrated experience delivering production-grade web applications.
Strong analytical, problem-solving, and debugging skills.
Excellent communication and collaboration skills.

What We're Looking For

The successful candidate should be:

A strong problem solver with excellent attention to detail.
Comfortable working across both frontend and backend technologies.
Able to take ownership of features from requirements through deployment.
Passionate about writing clean, maintainable, and scalable code.
Comfortable working in a collaborative Agile environment.
Able to communicate technical concepts effectively to both technical and non-technical stakeholders.

Typical Technology Stack

Backend: C#, .NET 8/9+, ASP.NET Core, Web API, Entity Framework Core
Frontend: React / Angular / Blazor, TypeScript, JavaScript, HTML5, CSS3
Database: Microsoft SQL Server
Cloud: Microsoft Azure
DevOps: Azure DevOps / GitHub Actions, CI/CD, Docker
Testing: xUnit / NUnit, Moq, Postman
Version Control: Git / GitHub / Azure Repos
Architecture: REST APIs, Microservices, Clean Architecture, SOLID, Design Patterns
Data & Documents: Fixed-width & delimited file processing, XML/XSD generation, PDF/document composition (Quadient, Exstream, SmartCOMM)

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