Toronto, On C#/.net/sql server developer Jobs – 90 Openings This Week

Senior Software Engineer
GFL Environmental —Vaughan, ON
- DevOps
- Databases
- AWS
3d
Solution Architect
Royal Bank of Canada —Toronto, ON
- Full-time
- DevOps
- Agile
- Leadership
Senior Software Developer
Xplore Inc —Markham, ON
- Full-time
- Azure
- Computer Science
- DevOps
Quick apply

More jobs to discover

Find similar jobs that you might be interested in.

Solution Architect
Brydon Gama —Markham, ON
AI/GenAI architecture experience — build-vs.-buy evaluation, risk-first controls, responsible AI documentation. Pay: $110,000.00-$130,000.00 per year.
$110,000–$130,000 a year
Quick apply
Sr. Delivery Solution Architect
McKesson —Mississauga, ON
The role proactively identifies architectural risks and mitigation strategies, and communicates complex design decisions and trade‑offs to non‑technical…
$99,100–$132,100 a year
8d

Show more similar jobs

Explore jobs in cities nearby

Check out jobs in cities near your current location, Columbus

.NET Developer – Healthcare IT - SJCAN
NavitasPartners —Markham, ON
NET Developer to design and build secure healthcare applications across clinical, administrative, and interoperability platforms.
From $25 an hour
Quick apply
8d
.NET Developer – Financial Systems - SJCAN
NavitasPartners —Markham, ON
NET Developer to design and develop secure financial applications supporting insurance, lending, and regulatory systems.
From $30 an hour
Quick apply
8d

Show more jobs in cities nearby

I want to receive the latest job alerts for c#/.net/sql server developer in toronto, on

By signing in to your account, you agree to SimplyHired's Terms of Service and consent to our Cookie and Privacy Policy.

Explore jobs in more locations

c#/.net/sql server developer jobs near toronto, on

Senior Software Engineer jobs in Vaughan, ON

Solution Architect jobs in Toronto, ON

Senior Software Engineer jobs in Markham, ON

Senior Living jobs in Airdrie, Ab

Process Engineer Entry Level Position jobs in Ontario

Senior Financial Analyst jobs in Toronto, On

Senior Software Engineer jobs in Whitby, On

Senior Software Engineer jobs in Guelph, On

Sienna Senior Living jobs in Surrey, Bc

Senior Architect jobs in Toronto, On

Solution Architect jobs in Kitchener, On

Solution First Therapy jobs in Toronto, On

Solution Architect jobs in Montréal, Qc

Solution Architect jobs in Remote

Solution Architect jobs in Winnipeg, Mb

Senior Software Engineer jobs in Kingston, On

Senior Software Engineer jobs in Maple, On

Amica Senior Lifestyles jobs in Erin Mills, On

Senior Software Engineer jobs in Waterloo, On

Pharmaceutical Chemical Engineer jobs in Ontario

Senior Software Engineer

GFL Environmental -
Vaughan, ON

Apply Now

Job details

3 days ago

Qualifications

CI/CD
Authentication
ASP.NET
MVC
ASP.NET Core
CSS
React
Full-stack development
DevOps
C#
Microsoft SQL Server
.NET
Databases
AWS
Docker
JavaScript
Terraform
REST
Redux
GitHub
APIs
S3
RDS
TypeScript
T-SQL

Full job description

Role Overview

We are seeking a highly skilled Senior Full-Stack Developer with 6+ years of experience to lead the digital transformation of our core enterprise applications. You will be responsible for the end-to-end modernization of legacy .NET Framework 4.8 MVC monoliths into high-performance, .NET 6+ and up microservices and APIs, paired with a modern React frontend and hosted on AWS.

This is not a "maintenance" role; it is a "re-engineering" role. You will bridge the gap between reliable legacy logic and the future-proof scalability of modern cloud architecture.

Key Responsibilities

Legacy Deconstruction: Analyze existing .NET 4.8 MVC applications to identify business logic, dependencies, and integration points for migration.
Architecture Migration: Lead the transition from monolithic architectures to modern design patterns (Microservices, Hexagonal, or Clean Architecture).
Backend Modernization: Rewrite and refactor legacy C# code to .NET 6/8+, implementing cross-platform compatibility and improved performance.
Frontend Revolution: Replace Razor/Server-side rendering with a decoupled, state-of-the-art React SPA (Single Page Application) using TypeScript and modern state management (Redux Toolkit, TanStack Query).
Cloud Orchestration: Design and deploy the modernized stack on AWS, leveraging services like Lambda, ECS (Fargate), S3, and RDS.
API Design: Build robust, secure RESTful APIs that serve as the bridge between the new React frontend and the modernized backend.
CI/CD Implementation: Establish automated pipelines for building, testing, and deploying both the .NET and React components.

Technical Requirements

Backend Expertise

Legacy: Deep understanding of .NET Framework 4.8, ASP.NET MVC, and Web API.
Modern: Expert-level proficiency in .NET 6/7/8 and ASP.NET Core.
Language: Advanced C# skills (Generics, LINQ, Async/Await, Dependency Injection).
Database: Experience with SQL Server (T-SQL) and migrating to AWS-managed databases (RDS/Aurora).

Frontend Expertise

React: Strong experience with Functional Components, Hooks, and modern React patterns.
Languages: JavaScript (ES6+) and TypeScript (Required).
Tools: Experience with Vite or Webpack, and CSS frameworks (Tailwind, Material UI).

Cloud & DevOps (AWS)

Compute: Hands-on experience with AWS Lambda (Serverless) or Amazon ECS/EKS.
Infrastructure: Familiarity with Infrastructure as Code (CloudFormation, CDK, or Terraform).
Deployment: Building CI/CD pipelines (GitHub Actions).

Preferred Qualifications

Experience using the AWS Porting Assistant for .NET or AWS Transform.
Familiarity with containerization (Docker) and orchestration.
Knowledge of Authentication/Authorization standards (OAuth2, OpenID Connect, AWS Cognito).
Proven track record of successfully migrating at least one large-scale enterprise application.

We thank you for your interest. Only those selected for an interview will be contacted.

GFL is committed to equal opportunity for all, without regard to race, religion, color, national origin, citizenship, sex, sexual orientation, gender identity, age, veteran status, disability, genetic information, or any other protected characteristic. If you are interested in applying for employment and need special assistance or an accommodation to apply for a posted position, please contact [email protected]

Job Details

Job ID:

R36385

Apply Now

Refine Your Search

c#/.net/sql server developer jobs in toronto, on

Senior Software Engineer

Solution Architect

Senior Software Developer

More jobs to discover

Explore jobs in cities nearby

I want to receive the latest job alerts for c#/.net/sql server developer in toronto, on

Related Searches

Explore jobs in more locations

Role Overview

Key Responsibilities

Technical Requirements

Preferred Qualifications

Job Details

Job seeker tools

Employer Tools

Browse

Stay Connected