Senior Web Application Developer

Mississauga, ONPosted 7 weeks ago

Role Overview

Flynn Group of Companies is hiring a Senior Web Application Developer. This is a contract role in Mississauga. Part of Flynn Group of Companies's Qa hiring. Full responsibilities, required qualifications, and the apply link are listed in the description below.

Salary Context

Salary is not disclosed in this posting. Market median for Senior-level Qa roles is $134k-$175k (based on 95 comparable listings). Many employers share specifics during the interview process or after an initial screen.

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TypeScriptSQLReactVueAngularAWSAzureDocker

Job description

At Flynn, it's not just a job, it's a career

Flynn Group of Companies, North America’s leading building envelope contractor is looking to hire a Sr. Web Application Developer to work in our beautiful Mississauga location.

Relocation assistance provided for TOP qualified candidates. And expects individuals coming to office all 5 days

Our Tech Stack

Our primary tech stack is .NET (C#) hosted in AWS and Microsoft Azure. We use MongoDB, MySQL, and SQL Server for our databases. Apps are built in ASP.NET and Angular for our web apps.

What we offer

-Funded training and development program

-Very well-equipped on-site gym w/ free access

-Dental and supplemental medical plan

-Matching RRSP contributions

-Employee and Family Assistance Program

-Subsidized onsite cafeteria with excellent food choices!

-Free parking and EV Charging facility

-Family Events and Flynn Fest

-MSDN Subscription

-Enterprise AI subscription (GitHub Copilot, Claude, or similar - your choice)

Responsibilities

-Will be a core member of the team to design, architect, develop, code reviews and test our key applications

-Design new application features and integrations in collaboration with team members to deliver complex changes

-Design and implement scalable and resilient cloud solutions with security and disaster recovery in mind

-Help the team plan and execute technical deliverables

-Ensure good code coverage and test coverage by writing and maintaining effective automated tests

-Be a champion of code quality in team by adhering to CLEAN architecture and SOLID principles

-Mentor other developers on the team in software development life cycle and best practices and elevate the skill of the team through technical mentorship

-Work with BA team and stakeholders to identify business needs and develop solutions that align with their objectives

-Off-hours support as required

-Participate in a rotating weekly on-call schedule

What we are Seeking

-10+ years of recent experience, with at least 5 years in a Sr. Web Developer or similar senior role

-Post-secondary education in Computer Science/IT or related field

-Experience in .NET / .NET Framework and C#

-Experience in entity framework

-Experience with TypeScript front-end frameworks: Angular, React, Vue

-Experience with commonly used relational database: MySQL, SQL Server, Postgres

-Experience with commonly used non-relational databases: MongoDB, DocumentDB, DynamoDB

-Docker and container-hosting: AWS ECS, Kubernetes

-General Amazon AWS knowledge (or equivalent): EC2, S3, CloudFront, Elastic Beanstalk, Dynamo DB

-Basic networking knowledge and troubleshooting

-Experience with any of the following tools and technologies: Atlassian Jira, GitHub, Azure DevOps, Aha!, New Relic, Sumo Logic

-Familiarity with AI-powered development tools such as GitHub Copilot, Claude Code, or similar - we embrace AI-assisted development as part of our engineering culture

-We trust our engineers - if there's a tool, license, or resource that helps you work better, just ask. We'll make it happen

About Flynn Group of Companies

Flynn Group of Companies

flynncompanies.com

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Frequently Asked Questions

How do I apply for the Senior Web Application Developer position at Flynn Group of Companies?

Use the Apply button above to submit your application directly to Flynn Group of Companies. Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.

Where is the Senior Web Application Developer position at Flynn Group of Companies located?

This position is based in Mississauga. Flynn Group of Companies has not indicated remote or hybrid options for this role, so candidates should plan for on-site work.

What does a Senior Web Application Developer at Flynn Group of Companies earn?

Flynn Group of Companies has not disclosed a salary range in this posting. Many employers share specifics later in the interview process; you can also ask during a recruiter screen if compensation transparency is important to you.

When was the Senior Web Application Developer role at Flynn Group of Companies posted?

This role was posted on May 27, 2026 (51 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.

How much experience does the Senior Web Application Developer role at Flynn Group of Companies require?

This is a senior-level position. Most senior roles call for 5+ years of directly relevant experience. Flynn Group of Companies lists their specific requirements in the description below, so review the must-have qualifications closely before applying.

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