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Senior Full Stack Software Developer Jobs in Ontario

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Full Stack Software Developer

Mississauga, ON · On-site

CA$85K/yr

We are seeking a skilled Full Stack Software Developer with 5+ years of professional experience to design, develop, and maintain robust web applications from concept to deployment. In this on-site ...

AltaML

Senior Full Stack Software Engineer

Toronto, ON · On-site

We're looking for a Senior Full Stack Software Engineer who is passionate about building high ... full stack developer * Demonstrable, hands-on experience using Claude (Claude Code, claude.ai, or ...

Affirm

Affirm is seeking a Senior Full Stack Software Engineer to join the Acquisition & Onboarding team. You will guide architecture across mobile, web, and backend systems, mentor engineers, and drive ...

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Senior Full Stack Software Developer information

See Ontario salary details

$59.5K

$129.3K

$191.5K

How much do senior full stack software developer jobs pay per year?

As of Aug 29, 2026, the average yearly pay for senior full stack software developer in Ontario is $129,325.00, according to ZipRecruiter salary data. Most workers in this role earn between $110,000.00 and $148,000.00 per year, depending on experience, location, and employer.

What is a senior full stack software developer?

A Senior Full Stack Software Developer is an experienced professional who designs, develops, and maintains both the front-end and back-end components of web applications. They are proficient in multiple programming languages and frameworks, enabling them to work on the entire technology stack, from databases and servers to user interfaces. In addition to coding, they often lead projects, mentor junior developers, and help architect scalable solutions that meet business needs. Their role requires strong problem-solving skills, a deep understanding of software development best practices, and the ability to collaborate with cross-functional teams.

What are the key skills and qualifications needed to thrive as a senior full stack software developer?

A Senior Full Stack Software Developer needs advanced proficiency in both front-end and back-end programming languages, strong problem-solving skills, and several years of relevant software development experience. Familiarity with frameworks like React or Angular, back-end technologies such as Node.js or Django, and experience with cloud platforms, CI/CD tools, and version control systems like Git are typically required. Excellent communication, teamwork, and leadership abilities help developers collaborate effectively and mentor junior team members. These skills are crucial for designing robust, scalable applications and leading complex projects to successful completion.

What types of projects and technologies can a senior full stack software developer expect to work on, and how does the team typically collaborate?

As a Senior Full Stack Software Developer, you can expect to work on a diverse range of projects such as developing scalable web applications, integrating APIs, and optimizing system performance. The tech stack often includes front-end frameworks like React or Angular, back-end environments such as Node.js, Python, or Java, and databases like PostgreSQL or MongoDB. Collaboration is highly cross-functional—you’ll regularly coordinate with product managers, UX/UI designers, QA engineers, and other developers through agile methodologies, code reviews, and sprint planning sessions. This role offers opportunities to mentor junior developers, influence architectural decisions, and contribute to continuous process improvement.

What is the difference between Senior Full Stack Software Developer vs Software Engineer?

AspectSenior Full Stack Software DeveloperSoftware Engineer
CredentialsBachelor's degree in CS or related field; experience in full stack developmentBachelor's degree in CS or related field; may have certifications in specific technologies
Work EnvironmentCollaborates across front-end and back-end teams, often in agile settingsDesigns, develops, and maintains software applications, often in teams or individually
Industry UsageCommon in tech companies, startups, and agencies requiring versatile development skillsWidely used across industries for software development roles

While both roles involve software development, a Senior Full Stack Software Developer specializes in both front-end and back-end technologies, often taking on leadership responsibilities. A Software Engineer may focus on specific areas of software design and implementation, with less emphasis on full stack expertise. The roles overlap in skills and industry usage, but the senior developer typically has broader responsibilities and experience in full stack development.

What are the most commonly searched types of Full Stack Software Developer jobs in Ontario?

The most popular types of Full Stack Software Developer jobs in Ontario are:

What cities in Ontario are hiring for Senior Full Stack Software Developer jobs?

Cities in Ontario with the most Senior Full Stack Software Developer job openings:

Senior Full Stack Software Developer jobs near you
Infographic showing various Senior Full Stack Software Developer job openings in Ontario as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 16% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $129,325 per year, or $62.2 per hour.

Senior Full-Stack Software Developer1024

Toronto, ON • On-site

Veracity Ventures Inc.
See more jobs at Veracity Ventures Inc.external

Full-time

Posted 7 days ago

Job description

Hi 
We are hiring for a Senior Full-Stack Software Developer with 2–6 years of experience to join our development team.
Position: Senior Full-Stack Software Developer
Experience: 2–6 Years
Location: Canada
Employment Type: Full-Time
Key Responsibilities
  • Design, develop, test, and maintain scalable web applications.
  • Work across both frontend and backend development.
  • Build and integrate RESTful APIs and third-party services.
  • Write clean, maintainable, and efficient code.
  • Collaborate with product, design, QA, and other engineering teams.
  • Troubleshoot issues, optimize application performance, and participate in code reviews.
  • Contribute to architecture and technical decision-making.
Required Skills
  • Strong experience in JavaScript/TypeScript and modern frontend frameworks such as React, Angular, or Vue.js.
  • Strong backend development experience with Node.js, Java, .NET, Python, or equivalent.
  • Good understanding of REST APIs, databases, SQL/NoSQL, Git, and software development practices.
  • Experience with cloud platforms such as AWS, Azure, or GCP is a plus.
  • Understanding of CI/CD, Docker, and Agile methodologies is preferred.
  • Strong problem-solving and communication skills.
What We Offer
  • Opportunity to work on challenging and impactful projects.
  • Collaborative and growth-oriented work environment.
  • Opportunities for learning and career development.
  • Competitive compensation and benefits.
If you are interested, please share your updated resume 
Best Regards
Ashish.
IT Recruiter
Veracity 
ashish@veracity-ca.com 

Flexible work from home options available.