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Senior Full Stack Web Developer Jobs in Toronto, ON

We are hiring a Senior Developer to help design, evolve, and scale the core systems that power KEV ... Strong frontend experience building modern web applications using React, JavaScript, HTML, and CSS ...

Senior Full Stack Software Engineer

Toronto, ON ยท Hybrid

CA$113K - CA$163K/yr

Senior Full-Stack Engineer - Capital Markets & Derivatives Are you passionate about building innovative technology solutions in Capital Markets? Join Manulife's Derivatives Product Team and help ...

Senior Full-Stack Engineer (Media Team)

Toronto, ON ยท Remote

CA$115K - CA$173K/yr

Senior Full-Stack Engineer (Media Team) Location: Ottawa, ON or Toronto, ON | Hybrid Department: R&D | Video Type: Permanent | Full-Time Vacancy Status: This is an active, approved role and we are ...

Senior Full-Stack Developer

Toronto, ON ยท Hybrid

CA$140K - CA$160K/yr

Senior Full-Stack Engineer (Applied AI) Our Technology team is the backbone of our company: constantly creating, testing, learning and iterating to better meet the needs of our customers. If you ...

Senior Full-Stack Developer

Toronto, ON ยท Hybrid

CA$140K - CA$160K/yr

Senior Full-Stack Engineer (Applied AI) Our Technology team is the backbone of our company: constantly creating, testing, learning and iterating to better meet the needs of our customers. If you ...

Ingest and connect siloed databases The Role As a Full Stack Engineer, you will be working on one ... stack web development. * Fluent in one or more backend and frontend technologies and have an ...

Ingest and connect siloed databases The Role As a Full Stack Engineer, you will be working on one ... stack web development. * Fluent in one or more backend and frontend technologies and have an ...

Web mapping UX and accessibility * DevOps, CI/CD & cloud infrastructure * QA/testing frameworks for spatial applications Let's Talk Pay We believe in being upfront about pay and helping you make ...

Showing results 41-60

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 Toronto, ON? The most popular types of Full Stack Web Developer jobs in Toronto, ON are:
What are popular job titles related to Senior Full Stack Web Developer jobs in Toronto, ON? For Senior Full Stack Web Developer jobs in Toronto, ON, the most frequently searched job titles are:
What cities near Toronto, ON are hiring for Senior Full Stack Web Developer jobs? Cities near Toronto, ON with the most Senior Full Stack Web Developer job openings:
Infographic showing various Senior Full Stack Web Developer job openings in Toronto, ON as of August 2026, with employment types broken down into 1% Internship, 74% Full Time, 18% Part Time, 1% Temporary, and 6% Contract. Highlights an 82% Physical, 4% Hybrid, and 14% Remote job distribution.

Senior Full Stack SoftwareEngineer

Signal 1

Toronto, ON โ€ข On-site

Full-time

Re-posted 18 days ago


Job description

Position Description:Senior Full Stack SoftwareEngineer

Reporting to:Director of Application Engineering

Signal 1 helps health systems accelerate AI adoption with a category defining technology platform. Signal 1's first product, the AI Management System (AIMS), gives health system leaders visibility and control across their growing AI portfolios. AIMS offers comprehensive oversight of predictive and generative AI applications and introduces guardrails to mitigate downside risks. It sets the standard for Responsible AI in healthcare. Purpose-built for healthcare and informed by years of experience managing AI at scale in other industries, Signal 1 empowers healthcare organizations to translate innovation into real clinical, operational, and financial outcomes.
Signal 1 is a 30-person, well-funded and rapidly growing startup with strong product market fit and deployments at a growing number of top-20 US health systems.

We are looking for a Senior Full StackSoftwareEngineer to join our Application Engineering Team. You will:

  • Build and evolve the frontend and backend of the Signal 1 AI Management System.
  • Drive software architecture design andestablishmodern engineering practices thatleverageAI-assisted development to raise quality and velocity.
  • Break down ambiguous, high-level problems into concrete technical solutions and engineering plans.
  • Work autonomously and collaboratively with Product, Design, ML, Security,Infrastructureand other engineering teams.


Required Qualifications:


  • Bachelor's degreein Computer Scienceor equivalent practical experience.
  • 5+ years of software development experience.
  • 2+ years of experience shipping user-facing products-you care about building things that are genuinely useful, not just visually polished.
  • Strong systemdesign and software architecture skills-you canownend-to-end technical decisions.
  • Strong problem-solving skills and ability to work with ambiguity.
  • Hands-on experience with AI coding tools (e.g.Claude) and a strong willingness to integrate them into daily workflows.


Preferred Qualifications:


  • Experience with TypeScript, React, Chart.js, Java 21, Spring Boot, Postgres, or any equivalent modern technologies.
  • You have workedinstartup environments and shipped products from 0 to 1.
  • You are passionate about great user experiences and data visualization.
  • Pragmatic mindset-you prioritize speed and business impact over unnecessary technical complexity.
  • Prior experience in working with AI and/or in healthcare.