Markham, On Full stack developer platform engineer Jobs – 113 Openings This Week

Senior Software Engineer
GFL Environmental —Vaughan, ON
- DevOps
- Databases
- AWS
2d
Director, Software Engineering
Aetonix —Toronto, ON
- Full-time
- AWS
- AI
- Leadership
- Dental care
- Vision care
Quick apply
Principal Software Engineer - Platform, Identity and BI
Calabrio —Toronto, ON
- On call
- Remote
- DevOps
- Java
- SQL
- Designated paid holidays
- Disability insurance
Quick apply
QE Automation Lead
Tata Consultancy Services —Toronto, ON
- $100,000–$120,000 a year
- Java
- Project management
- JavaScript
13d
CyberArk Developer
Tata Consultancy Services —Toronto, ON
- Azure
- Databases
- AWS
Senior Software Engineer | Remote | AI SaaS Software Role
Process Street —Toronto, ON
- Full-time
- Remote
- Java
- AWS
- JavaScript
- Dental care
- Paid time off
Quick apply
Senior Typescript Developer
Tata Consultancy Services —Toronto, ON
- Azure
- Databases
- AWS
DevOps Engineer
Zonda Home —Toronto, ON
- $70,000–$88,000 a year
- Full-time
- Remote
- Azure
- DevOps
- AWS
- Wellness program
- Designated paid holidays
Quick apply
Devops Engineer
Tata Consultancy Services —Toronto, ON
- DevOps
Founding Account Executive (AI Cloud)
Featherless AI —Toronto, ON
- Full-time
- Remote
- Sales
- Communication skills
CIAM Engineer
Tata Consultancy Services —Toronto, ON
- Azure
- AWS
- APIs
Data Security Engineer
CIBC —Toronto, ON
- Full-time
- Azure
- Oracle
- Computer Science
Staff Android OS Engineer - Infotainment
Rivian and Volkswagen Group Technologies —Toronto, ON
- $137,000–$181,000 a year
- Full-time
- Hybrid work
- Computer Science
- Engineering
- Java
Senior Specialist - Software Engineering
LTM —Toronto, ON
- $110,000–$130,000 a year
- On call
- Computer science
- Azure
- Computer Science
- Disability insurance
- Dental care
Quick apply
Senior Security Engineer
Solink —Toronto, ON
- $120,000–$150,000 a year
- Full-time
- Hybrid work
- Computer Science
- Engineering
- AWS
- Dental care
3d
Senior Site Reliability Engineer
iManage —Toronto, ON
- Full-time
- Hybrid work
- Azure
- Engineering
- Java
- Dental care
- Paid time off
Quick apply

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Accommodations Plus International —Markham, ON
Prior experience with performance management, managing managers, resource forecasting and hiring, job development, unit organizational structure, resource…
$160,000–$190,000 a year
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GameDay Men's Health Aurora, ON —Richmond Hill, ON
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Full Stack Developer (.NET / Cloud / AI-Assisted Development)
BlazeSoft —Concord, ON
Take part in the full development lifecycle, from design to production. We are looking for developers who are passionate about technology, eager to learn, and…

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full stack developer platform engineer jobs near markham, on

Senior Software Engineer

GFL Environmental -
Vaughan, ON

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Job details

2 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

full stack developer platform engineer jobs in markham, on

Senior Software Engineer

Director, Software Engineering

Principal Software Engineer - Platform, Identity and BI

QE Automation Lead

CyberArk Developer

Senior Software Engineer | Remote | AI SaaS Software Role

Senior Typescript Developer

DevOps Engineer

Devops Engineer

Founding Account Executive (AI Cloud)

CIAM Engineer

Data Security Engineer

Staff Android OS Engineer - Infotainment

Senior Specialist - Software Engineering

Senior Security Engineer

Senior Site Reliability Engineer

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