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

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Senior Full-Stack Developer (Canada)

Toronto, ON · Remote

CA$155K - CA$175K/yr

... Senior Full-Stack Developer to join our talented engineering team as we scale and expand. What You ... high-performance web applications. * Familiarity with database management (SQL/NoSQL), and ...

StackandCo

Senior Full Stack Developer

Galway, NY · On-site

Embrace emerging technologies and keep abreast of new frameworks, tools and programming languages ... In\-depth experience with several full stack technologies such as Spring, Spring\-Boot, Spring\-Web ...

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Senior Full-Stack Developer (Canada)

Ottawa, ON · Remote

CA$155K - CA$175K/yr

... Senior Full-Stack Developer to join our talented engineering team as we scale and expand. What You ... high-performance web applications. * Familiarity with database management (SQL/NoSQL), and ...

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Senior Full-Stack Developer (Canada)

Waterloo, ON · Remote

CA$155K - CA$175K/yr

... Senior Full-Stack Developer to join our talented engineering team as we scale and expand. What You ... high-performance web applications. * Familiarity with database management (SQL/NoSQL), and ...

StackandCo

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

Chubb

Senior Full Stack Engineer

Toronto, ON · On-site

Senior Full-Stack Engineer, AI Platform The Opportunity Chubb's AI Platform team is building an enterprise AI platform that powers RAG-based search, document intelligence, and AI-assisted workflows ...

Mattermost

Staff Full Stack Engineer

Toronto, ON · On-site +1

CA$195K - CA$238K/yr

Senior full-stack development experience in Go and React (or a comparable stack), with a track ... Be part of a vibrant developer community shaping the future of secure collaboration Compensation ...

StackandCo

You master object\-oriented programming and web integration. You also master Javascript, CSS, HTML ... You see yourself as a full\-stack developer and master the back\-end and frontend management of ...

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Sr Full Stack Web Developer information

What does a Sr Full Stack Web Developer do?

A Sr Full Stack Web Developer is responsible for designing, building, and maintaining both the front-end (client-side) and back-end (server-side) components of web applications. They work with various programming languages, frameworks, and databases to create seamless and efficient user experiences. In addition to coding, they often lead technical projects, mentor junior developers, and help shape the overall architecture of web solutions. Their role requires a deep understanding of both user interface design and server-side logic, ensuring that all parts of a web application function together smoothly.

What are the key skills and qualifications needed to thrive as a Sr Full Stack Web Developer?

To thrive as a Sr Full Stack Web Developer, you need advanced proficiency in both front-end (e.g., HTML, CSS, JavaScript frameworks) and back-end (e.g., Node.js, Python, databases) development, typically supported by a degree in computer science or related experience. Familiarity with tools such as Git, cloud platforms (AWS, Azure), RESTful APIs, and relevant certifications like AWS Certified Developer are commonly required. Strong problem-solving skills, effective communication, and the ability to mentor junior developers are essential soft skills for this role. These competencies ensure you can deliver robust, scalable solutions while collaborating efficiently within multidisciplinary teams.

How does a Sr Full Stack Web Developer typically collaborate with cross-functional teams during a project lifecycle?

As a Sr Full Stack Web Developer, you will frequently collaborate with UX/UI designers, product managers, QA engineers, and sometimes DevOps specialists throughout a project's lifecycle. You may participate in sprint planning, code reviews, and daily stand-ups, ensuring alignment on project goals and technical requirements. Effective communication is key, as you'll often translate business needs into technical solutions and provide guidance to junior developers. This collaborative environment supports the delivery of robust, user-friendly web applications and fosters professional growth through shared knowledge.

What is the difference between Sr Full Stack Web Developer vs Full Stack Web Developer?

AspectSr Full Stack Web DeveloperFull Stack Web Developer
Required Experience5+ years, leadership skills often expected1-3 years, focus on development skills
ResponsibilitiesDesigning complex systems, mentoring, project leadershipBuilding features, coding, debugging
CertificationsOptional, but advanced certifications valuedEntry to mid-level certifications
Work EnvironmentFast-paced, collaborative teams, often in tech companies

The main difference between a Sr Full Stack Web Developer and a Full Stack Web Developer lies in experience, responsibilities, and leadership. Senior developers typically have more experience, handle complex projects, and mentor others, while full stack developers focus on coding and feature development. Both roles are essential in tech industries, but senior roles require a broader skill set and leadership capabilities.

What are popular job titles related to Sr Full Stack Web Developer jobs in Ontario?

For Sr Full Stack Web Developer jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Sr Full Stack Web Developer jobs in Ontario look for?

The top searched job categories for Sr Full Stack Web Developer jobs in Ontario are:

What cities in Ontario are hiring for Sr Full Stack Web Developer jobs?

Cities in Ontario with the most Sr Full Stack Web Developer job openings:

Sr Full Stack Web Developer jobs near you
Infographic showing various Sr Full Stack Web Developer job openings in Ontario as of June 2026, with employment types broken down into 89% Full Time, 7% Part Time, and 4% Contract. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution.

Senior Elixir Full Stack Developer

Invision AI

Toronto, ON • On-site

Full-time

Medical, Dental

Posted 12 days ago

Job description

We are looking for a Full Stack developer to join our Toronto team and help us take our products to the next level in connectivity and performance. 

Our Company 

Invision AI is building a universal AI platform for computer vision applications. Powered by a unique multi-camera stack that generates high-integrity 3D digital twins of dynamic environments, our technology powers disruptive, market-leading solutions in intelligent infrastructure and global  

Transportation. 

The Role 

As a Senior Full Stack Developer, you will work on projects related to machine learning, image processing, and real-time video processing. You will develop solutions on different architectures (including embedded/small footprint, databases and cloud platforms), frameworks and third-party libraries. As a team player with a knack for visual design and utility, you will be a key participant in the next stage of our company’s expansion, gain experience in lean startup approaches in a constantly changing and growing environment and bring our products to the next level to reach new customers. 

If you love designing and developing real-time distributed edge and cloud systems and want to have a strong impact on the future of mobility, keep reading. 

What You'll Do

  • Take ownership in the design and development of our cloud and edge infrastructure, web apps and APIs 
  • Design and implement client-side and server-side architecture 
  • Recommend, implement, and manage the supporting infrastructure for our different lines of products 
  • Build the front-end of applications through appealing visual design 
  • Prototype new features and innovative solutions using cutting edge technologies 
  • Write technical documentation 

Requirements

Must Have

  • 5-years' experience deploying web applications 
  • Experience with Elixir and Phoenix LiveView (Here an article about Elixir at Invision AI) 
  • Experience with another framework (Django, Ruby on Rails), and relational databases 
  • Familiar with Docker, Linux and web servers such as Nginx or Apache 
  • Experience with Kubernetes deployment (or similar distributed system) 
  • Experience withh AWS, Google Cloud or equivalent 
  • Experience in designing web applications with HTML, CSS and JavaScript 
  • Experience with modern Software Engineering principles and techniques such as Test-Driven Development and Continuous Integration 
  • Strong written and oral communication 
  • Solid understanding of web security issues and practices 

Bonus Skills

  • Knowledge of GIS, Leaflet/Mapbox, Web Canvas and PostGIS (our systems provide geo-referenced data) 
  • Experience deploying in virtualized environments 
  • Experience with NATS or similar 
  • Experience with Python and TypeScript 
  • Experience with efficient serialization and communication protocols (e.g. protobuf, gRPC) 
  • Familiar with data visualization and ML packages such as sklearn, pandas, seaborn and plotly 

Benefits

  • A Mission that Matters: The opportunity to work on projects that make the world safer and greener 
  • Excellence: A culture of very high technical standards where quality engineering is valued over quick hacks 
  • Technical Challenge: A wide variety of technology and tasks, including web development, distributed and edge computing, ML, real-time processing, and computer vision 
  • Growth Environment: Join an international team where your voice is heard and your impact is visible 
  • Compensation and benefits: Competitive salary package including equity, allowing you to share in the success you help build. Benefits: RRSP Plan, Health and Dental and 4 weeks holiday.