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Senior Full Stack Web Developer Jobs in Ontario (NOW HIRING)

We're looking for a passionate Senior Full-Stack Developer who wants to make a difference in a fast ... Web: HTML, Javascript, CSS, React * Backend: Python, Django, Postgres, Redis. * Distributed ...

\n \n \n \n \n Our client is looking for a talented Frontend focused, Full\-Stack Web Developer who enjoys to write high quality, clean code and has experience with multiple CMS. \n \n \n \n \n \n Key ...

\n \n \n \n \n Our client is urgently looking for a talented Frontend focused, Full\-Stack Web Developer who enjoys writing high quality, clean code and has experience with multiple CMS. \n \n \n \n ...

\n \n \n \n \n Our client is urgently looking for a talented Frontend focused, Full\-Stack Web Developer who enjoys writing high quality, clean code and has experience with multiple CMS. \n \n \n \n ...

Senior Full Stack Engineer

Toronto, ON · On-site +1

CA$132K - CA$181K/yr

We are seeking a Senior Full Stack Engineer to help build and scale Mattermost's core web platform for teams operating in defense and critical infrastructure sectors. You will contribute across our ...

New

\n \n \n \n \n The successful Senior Full Stack Developer will assume ownership for a diversity of ... and building web services for clients. \n \n \n \n \n \n As well as this, you will play an ...

Senior Full Stack Developer

Toronto, ON · Hybrid

CA$120K - CA$145K/yr

About The Role As a Senior Full Stack Developer you'll be tasked with working on web application development. Working within the software development team, your duties will require you to assist in ...

Showing results 21-40

Senior Full Stack Web Developer information

What is the difference between Senior Full Stack Web Developer vs Front End Developer?

AspectSenior Full Stack Web DeveloperFront End Developer
Required SkillsProficiency in both front-end and back-end technologies, including JavaScript, HTML, CSS, server-side languages, databasesExpertise in HTML, CSS, JavaScript, and front-end frameworks like React or Angular
Work EnvironmentFull-stack development teams, both client and server-side projectsPrimarily UI/UX design, front-end frameworks, and client-side scripting
Common UsageUsed across startups, tech companies, and agencies requiring comprehensive development skillsUsed in projects focusing on user interface, visual design, and user experience

The main difference between a Senior Full Stack Web Developer and a Front End Developer lies in scope. The senior full stack role covers both front-end and back-end development, requiring broader skills and experience, while the front end developer specializes in creating and optimizing the user interface and experience.

What is a senior full stack web developer?

A Senior Full Stack Web Developer is an experienced software 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 build user interfaces, server-side logic, databases, and APIs. Senior-level developers also often lead teams, make architectural decisions, and mentor junior developers. Their expertise ensures that web applications are scalable, secure, and efficient from end to end.

How does a senior full stack web developer typically collaborate with cross-functional teams on large-scale projects?

Senior Full Stack Web Developers frequently work alongside designers, product managers, QA engineers, and other developers to deliver feature-rich web applications. They participate in sprint planning, code reviews, and architectural discussions, ensuring alignment between front-end and back-end solutions. Effective communication is crucial, as they often translate technical concepts for non-technical stakeholders and help integrate feedback from different departments. This collaborative approach not only improves product quality but also provides valuable leadership opportunities within the development team.

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

To thrive as a Senior Full Stack Web Developer, you need advanced proficiency in both front-end (e.g., JavaScript, React, HTML/CSS) and back-end (e.g., Node.js, Python, databases) technologies, typically backed by a computer science degree or equivalent experience. Expertise with version control systems like Git, cloud platforms (AWS, Azure), and familiarity with CI/CD pipelines or relevant certifications are highly valuable. Strong problem-solving, leadership, and communication skills help you effectively collaborate and mentor junior developers. These skills are crucial for delivering robust, scalable applications and leading projects across diverse technical and team environments.
What are the most commonly searched types of Full Stack Web Developer jobs in Ontario? The most popular types of Full Stack Web Developer jobs in Ontario are:
What job categories do people searching Senior Full Stack Web Developer jobs in Ontario look for? The top searched job categories for Senior Full Stack Web Developer jobs in Ontario are:
What cities in Ontario are hiring for Senior Full Stack Web Developer jobs? Cities in Ontario with the most Senior Full Stack Web Developer job openings:
Infographic showing various Senior Full Stack Web Developer job openings in Ontario as of August 2026, with employment types broken down into 1% Internship, 73% Full Time, 19% Part Time, 1% Temporary, and 6% Contract. Highlights an 82% Physical, 4% Hybrid, and 14% Remote job distribution.

Senior Full Stack Developer (PHP + React.js)

STACK IT Recruitment

Kitchener, ON • On-site

Full-time

Posted 18 days ago


Job description

Build and Modernize Enterprise Web Applications as a Senior Full Stack Developer (PHP & React)
We're partnering with an established software company seeking a Senior Full Stack Developer to help enhance and evolve enterprise web applications used within the education sector.

Working as part of a collaborative product team, you'll contribute to the continued development of a mature application while helping introduce new features, modern APIs, and scalable integrations. This role combines hands-on development with technical problem-solving, giving you the opportunity to influence application architecture while modernizing an established platform for future growth.

If you enjoy improving existing systems, building thoughtful solutions, and working across the full technology stack, this is an opportunity to make a meaningful technical impact.