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Senior Web Application Developer Jobs in Ontario

Scotiabank

Senior Web Developer

Toronto, ON · On-site +1

We are looking for a Senior Web Developer to design, build, and scale high quality web applications ... We'd love to work with you if you have: * 8+ years of professional experience in web application ...

StackandCo

\n \n \n \n \n Full Stack Software Developer I have a open role for a Senior Full Stack Web ... You will be designing and making a new application that will change the way health care ...

Pala Interactive

Senior Web Developer

Toronto, ON · On-site

The Senior Frontend Developer / Senior Web Developer will have primary responsibility for designing and implementing mobile gaming applications on an open source Linux platform using HTML5, Canvas ...

Pala Interactive

Senior Web Developer

Toronto, ON · On-site

TheSenior Frontend Developer / Senior Web Developerwill have primary responsibility for designing and implementing mobile gaming applications on an open source Linux platform using HTML5, Canvas ...

Imagine Communications

Senior Web Developer

Toronto, ON · On-site

Imagine Communications is seeking a Software Engineer with web development expertise to join our engineering team in Toronto, Canada or Cambridge, UK (both locations are remote friendly). This role ...

Imagine Communications

Senior Web Developer

Toronto, ON · On-site

A Bit About The Role Imagine Communications is seeking a Software Engineer with web development expertise to join our engineering team in Toronto, Canada or Cambridge, UK (both locations are remote ...

StackandCo

... Web Applications Developer to join their high calibre team who are granted a lot of creative control. \n \n \n \n \n \n Requirements \n \n \n \n \n \n * 4+ years Web Application experience ...

StackandCo

\n \n \n \n \n Are you a talented Web Applications UI Developer? Do you want to be part of a close ... years Web Application experience (experience developing websites only is not sufficient) \n

Rockstar Games

Senior Web Programmer

Oakville, ON · On-site

Rockstar Games is seeking a passionate and experienced Senior Web Programmer with a focus on the ... If we would like to move forward with your application, a Rockstar recruiter will reach out to you ...

StackandCo

... for a Senior Application Developer to join their brand\-new Irish office building the next ... In\-depth experience with several full stack technologies such as Spring, Spring\-Boot, Spring\-Web ...

KPMG

Senior Full Stack Application Developer

Kanata, ON · On-site

The Application Development team is seeking a Senior Full Stack Application Developer to support ... Design, develop, test, and maintain enterprise web applications using modern Microsoft technologies

StackandCo

Senior Application Developer

Galway, NY

\n \n \n \n \n Role Overview The primary responsibility of the senior application developer, in ... In\-depth experience with several full stack technologies such as Spring, Spring\-Boot, Spring\-Web ...

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Senior Web Application Developer information

See Ontario salary details

$56.5K

$116K

$166.5K

How much do senior web application developer jobs pay per year?

As of Aug 17, 2026, the average yearly pay for senior web application developer in Ontario is $115,999.00, according to ZipRecruiter salary data. Most workers in this role earn between $95,000.00 and $135,000.00 per year, depending on experience, location, and employer.

What are the most commonly searched types of Web Application Developer jobs in Ontario?

The most popular types of Web Application Developer jobs in Ontario are:

What cities in Ontario are hiring for Senior Web Application Developer jobs?

Cities in Ontario with the most Senior Web Application Developer job openings:

Infographic showing various Senior Web Application Developer job openings in Ontario as of August 2026, with employment types broken down into 71% Full Time, 25% Part Time, and 4% Contract. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution, with an average salary of $115,999 per year, or $55.8 per hour.

Web Application Developer

Flynn Group of Companies

Mississauga, ON

CA$70K - CA$110K/yr

Full-time

Re-posted 23 days ago

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 Web Application Developer to work in our beautiful Mississauga location. 
 
 
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
 
-Lead and drive all activities to integrate real and near-real time capabilities between new core products and other applications
 
-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
 
-Participate in a rotating weekly on-call schedule
 
-Off-hours support as required
 
What we are Seeking
-Must have at least 5 years of experience working on web development
 
-Post-secondary education in Computer Science/IT or related field
 
-4 years of experience with web development - Angular, Jquery, KondoUI, API, .NET Core, MongoDB and/or MySQL
 
-Experience in .NET / .NET Framework and C#
 
-2 years with cloud technologies - AWS or Azure. Experience working with integrating interconnected systems such as microservices
 
-Solid understanding of and hands on experience with CLEAN architecture and SOLID principles
 
-Troubleshoot and resolve technical issues and provide support during the testing and deployment phases
 
-Experience in Agile environment using tools such as JIRA, Aha
 
-Knowledge of security best practices
 
-Experience with containerization
 
-Nice to have: Experience working with observability and monitoring tools such as Sumo Logic, New Relic, CloudWatch, etc.
 
-Nice to have: Experience working with DevOps concepts such as CI/CD and Infrastructure as Code
 
-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 
$70,000 - $110,000 a year
#LI-AD1

Flynn Group of Companies is the leading trade contractor in North America that works on virtually every aspect of a building's outer layer, including Roofing, Glazing, Waterproofing, and Architectural Metals. The foundation of our award winning success is having the right people on our team.
Disclosure: We use an AI-powered system to initially screen resumes.  However,  all applications/resumes are also reviewed by our team of Human Resources and Talent Acquisition Professionals to ensure a fair and thorough evaluation in determining a candidate's potential fit for a role they applied to.
This posting is for an existing vacancy within the organization.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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