senior fullstack engineer jobs in Toronto

10,000 senior fullstack engineer job listings in Canada. Find daily updated positions from leading job boards.


  • Toronto, ON, Canada Affirm, Inc. Full-time €153,000 - €213,000 Contract

    Elevate your software engineering career as a Senior Fullstack Engineer with affirm in Remote Canada. Collaborate on innovative frontend projects that shape user experiences across mobile and web. At affirm, you will engage in fullstack development, bringing your expertise in web apps, APIs, and mobile technologies to the forefront. This senior role...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada HCAN Huron Advisors Canada Limited Full-time €115,000 - €140,000

    Huron is a global consultancy that collaborates with clients to drive strategic growth, ignite innovation and navigate constant change. Through a combination of strategy, expertise and creativity, we help clients accelerate operational, digital and cultural transformation, enabling the change they need to own their future. Join our team as the expert you are...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Docebo Full-time €123,400 - €164,500 Temporary

    Artificial Intelligence. Actual Impact. At Docebo, we’re using AI to change how people learn at work-and we mean actually change it. We’re an AI-powered learning platform that helps organizations create, deliver, and manage training all in one place. But our real mission goes deeper: we help teams move faster, work smarter, and focus on the work that...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Docebo-1 Full-time

    Artificial Intelligence. Actual Impact. At Docebo, we’re using AI to change how people learn at work—and we mean actually change it. We’re an AI-powered learning platform that helps organizations create, deliver, and manage training all in one place. But our real mission goes deeper: we help teams move faster, work smarter, and focus on the work that...


  • Toronto, ON, Canada Cresta Full-time $80,000 - $100,000 Contract

    Cresta is seeking a Fullstack Engineer for the Cresta Opera platform, focusing on optimizing customer conversation analysis. Engage in a dynamic role that combines frontend and backend development. As a senior engineer, you will work closely with product managers to define requirements and set architectural designs. Your contributions will improve...


  • Toronto, Canada Huron Consulting Services Remote Full-time $115,000 - $140,000 Contract

    Huron is a global consultancy that collaborates with clients to drive strategic growth, ignite innovation and navigate constant change. Through a combination of strategy, expertise and creativity, we help clients accelerate operational, digital and cultural transformation, enabling the change they need to own their future. Join our team as the expert you...


  • Toronto, ON, Canada Doppel Full-time $80,000 - $120,000 Contract

    Doppel is hiring a fullstack software engineer to drive innovation in our Simulation products targeting social engineering attacks. Join our nimble team led by experienced founders to redefine cybersecurity solutions. This role is for engineers eager to engage in building AI-enhanced simulation features that can tackle real-world threats. You will work on...


  • Toronto, Ontario, Canada WorkWhile Full-time

    About WorkWhile WorkWhile is on a mission to help workers earn a better living and live better lives. More than 80 million Americans work hourly jobs, often with unpredictable schedules that pay close to minimum wage and offer limited benefits, leading to financial instability. WorkWhile is revolutionizing frontline work by creating a more flexible and...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Cresta Full-time

    Cresta is seeking a Fullstack Engineer for the Cresta Opera platform, focusing on optimizing customer conversation analysis. Engage in a dynamic role that combines frontend and backend development. As a senior engineer, you will work closely with product managers to define requirements and set architectural designs. Your contributions will improve...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Doppel Full-time

    Doppel is hiring a fullstack software engineer to drive innovation in our Simulation products targeting social engineering attacks. Join our nimble team led by experienced founders to redefine cybersecurity solutions. This role is for engineers eager to engage in building AI-enhanced simulation features that can tackle real-world threats. You will work on...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Affirm Full-time

    Elevate your engineering career with Affirm as a Fullstack Software Engineer specializing in Ads Platform. Collaborate remotely to innovate personalized customer experiences and enhance merchant advertising strategies. In this remote role, you will leverage 1.5+ years of software engineering expertise to contribute to the development of web applications...


  • Toronto, ON, Canada Lumenalta Remote Full-time $76,000 - $139,000 Contract

    Base pay range CA$76,000.00/yr - CA$139,000.00/yr With over 20 years of fully remote experience, Lumenalta offers: Fully remote work Rapid growth opportunities Self-Improvement What You Will Work On Collaborate with visionary enterprise clients Learn how to handle difficult situations Tackle complex challenges at scale Push boundaries with emerging...

  • Fullstack Engineer

    4 days ago


    Toronto, ON, Canada Stream Full-time €100,000 - €128,000 Contract

    About Stream Stream powers real-time Chat, Video, Activity Feeds, and AI Moderation for more than 1 billion end users across 4,000+ apps, from Strava and Bumble to eBay and Patreon. Our platform processes billions of API requests per month and supports applications with millions of concurrent users, while delivering highly reliable, low-latency services and...


  • Toronto, Ontario, Canada Affirm, Inc. Full-time

    At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. Search has become the default way consumers discover where to shop, compare options, and decide what to buy across platforms like Google, TikTok, and even Klarna. As we build a...


  • Toronto, ON, Canada Lyft Full-time $83,000 - $94,000 Contract

    Elevate your skills in this Fullstack Software Engineering Internship in Toronto! Join a collaborative team and contribute to meaningful projects that enhance transportation experiences. Ideal candidates are pursuing a Bachelor’s or Master’s in Computer Science and will graduate between December 2027 and Summer 2028. You will engage with tools like...


  • Toronto, ON, Canada Okta Inc. Full-time $160,000 - $220,000 Contract

    Secure Every Identity, from AI to HumanIdentity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate...


  • Toronto, ON, Canada Senpilot Full-time $160,000 - $210,000 Contract

    Senpilot builds AI-powered infrastructure for utilities, focusing on an intelligent grid. We are seeking a senior engineer to own AI-powered product features end to end, from schema design to production shipping, leveraging AI coding tools like Claude and Cursor.You will work with a stack including TypeScript, Python, Node.js, GCP, Kubernetes, React,...


  • Toronto, Ontario, Canada Evolvic Inc. Full-time

    We are seeking Senior Fullstack Developers to build complex features and lead development efforts. This role requires extensive experience with .NET technologies and modern web frameworks, working closely with technology and business leadership to deliver innovative solutions.Key ResponsibilitiesBuild complex features and lead junior developers by...


  • Toronto, ON, Toronto Census Division, ON; Ontario, Canada Affirm, Inc. Full-time

    Elevate your software engineering career as a Senior Fullstack Engineer with affirm in Remote Canada. Collaborate on innovative frontend projects that shape user experiences across mobile and web. At affirm, you will engage in fullstack development, bringing your expertise in web apps, APIs, and mobile technologies to the forefront. This senior role...


  • Toronto, Canada Okta Full-time $160,000 - $220,000 Contract

    Secure Every Identity, from AI to HumanIdentity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate...