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Full Stack Javascript Developer Jobs in Ontario (NOW HIRING)

CDM Smith

Senior Full Stack Developer

Toronto, ON · Remote

Trinnex, a wholly owned subsidiary of CDM Smith, is looking for a Senior Full Stack Developer to ... NET and JavaScript/TypeScript (Node.js, Next.js, Express). Solid understanding of API design, data ...

Schema App

Full Stack Developer

Guelph, ON · On-site +1

Full Stack Developer Opportunity Location: Remote within Canada Schema App is a fast-growing ... in JavaScript andVue.js. Applies full stack development patterns and software architecture ...

Hays

NET / C# , JavaScript / TypeScript , React * Experience with Node.js, GraphQL, MVC, HTML, SQL ... re a full stack developer passionate about modern eCommerce technologies and enterprise-scale ...

StackandCo

You will work on a high performing team of Senior Full Stack Engineers where you will be building a ... JavaScript \/ TypeScript \n * ReactJS OR VueJS \n * CSS4 & HTML5 \n \n \n \n \n \n This ...

StackandCo

... AWS, JavaScript, HTML5, CSS3, React and Node.js. \n \n \n \n \n \n The person needs to have a ... Full stack Developer with a strong engineering mindset and the confidence to pick up new tech fast ...

Tekgence Inc

Full stack Developer

Toronto, ON

Role: Full stack Developer - React with Generative AI Experience Location: Toronto, ON Hybrid ... Required Skills Strong experience in React.js, JavaScript (ES6+), and TypeScript Hands-on ...

StackandCo

Senior Full Stack Developer

Galway, NY · On-site

... a full stack developer to join their team. \n \n \n \n \n \n Role Overview The primary ... JavaScript and Bootstrap, React\/Angular. \n * Knowledge of modern database technologies ...

Klick Health

Senior Full-Stack Developer

Toronto, ON · Hybrid

The Senior Full Stack Developer contributes across the development lifecycle--architecture ... Experience with Node/JavaScript for both front and back-end development . * Experience with SQL ...

Klick

Senior Full-Stack Developer

Toronto, ON

CA$100K - CA$130K/yr

The Senior Full Stack Developer contributes across the development lifecycle--architecture ... Experience with Node/JavaScript for both front and back-end development. * Experience with SQL ...

StackandCo

\n \n \n \n \n Our client is looking for an experienced Full Stack (PHP) Developer to join their ... as JavaScript and at least one JS framework. The company are a medium sized company and they ...

StackandCo

\n \n \n \n \n Our client is looking for an experienced Full Stack (PHP) Developer to join their ... as JavaScript and at least one JS framework. The company are a medium sized company and they ...

StackandCo

\n \n \n \n \n We have a pressing requirement for an experienced Full Stack Developer to join a ... An excellent knowledge of JavaScript frameworks (they use React but not essential) \n * REST ...

StackandCo

\n \n \n \n \n Our client is looking for an experienced Full Stack (PHP) Developer to join their ... as JavaScript and at least one JS framework. The company are a medium sized company and they ...

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All JobsFull Stack Javascript Developer JobsFull Stack Javascript Developer Jobs in Ontario

Full Stack Javascript Developer information

See Ontario salary details

$42.5K

$116.1K

$180K

How much do full stack javascript developer jobs pay per year?

As of May 31, 2026, the average yearly pay for full stack javascript developer in Ontario is $116,068.00, according to ZipRecruiter salary data. Most workers in this role earn between $93,000.00 and $137,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Full Stack JavaScript Developer, and why are they important?

To thrive as a Full Stack JavaScript Developer, you need solid proficiency in JavaScript, front-end frameworks like React or Angular, back-end technologies such as Node.js, and a strong understanding of databases, typically supported by a relevant degree or coding bootcamp experience. Familiarity with version control systems like Git, cloud platforms (e.g., AWS), and deployment pipelines is highly valued, along with certifications such as AWS Certified Developer or relevant JavaScript credentials. Strong problem-solving skills, effective communication, and the ability to collaborate across teams help developers stand out in this role. These skills and qualities are essential to efficiently build, maintain, and scale robust web applications in a collaborative, fast-paced environment.

What are some common challenges Full Stack Javascript Developers face when managing both frontend and backend tasks?

Full Stack Javascript Developers often encounter challenges in balancing the demands of both frontend and backend development, such as staying updated with rapidly evolving frameworks and managing integration between different parts of the application. Coordinating with designers, backend engineers, and DevOps can require strong communication and time management skills. Additionally, debugging issues that span the entire tech stack and ensuring consistent performance across client and server components are frequent hurdles. Overcoming these challenges typically involves continuous learning, effective collaboration, and adopting best practices in code organization and testing.

What is a Full Stack JavaScript Developer?

A Full Stack JavaScript Developer is a software engineer skilled in using JavaScript for both front-end and back-end development. They work with frameworks like React or Angular for the user interface and Node.js or Express.js for server-side programming. These developers are responsible for building, deploying, and maintaining web applications, ensuring seamless functionality from the client-side to the server-side. Their expertise allows them to handle databases, APIs, and the integration between different layers of a web application.

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

AspectFull Stack Javascript DeveloperFront End Developer
SkillsJavaScript, Node.js, React or Angular, databases, server managementJavaScript, HTML, CSS, UI/UX design, frameworks like React or Vue
Work EnvironmentBackend and frontend development, full project lifecyclePrimarily UI/UX, client-side development
CredentialsProficiency in both frontend and backend technologiesStrong frontend skills, often with design knowledge

Full Stack Javascript Developers have expertise in both frontend and backend development, working across the entire application stack. Front End Developers focus mainly on the user interface and experience. The roles overlap in JavaScript skills but differ in scope and responsibilities.

What are popular job titles related to Full Stack Javascript Developer jobs in Ontario? For Full Stack Javascript Developer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Full Stack Javascript Developer jobs in Ontario look for? The top searched job categories for Full Stack Javascript Developer jobs in Ontario are:
What cities in Ontario are hiring for Full Stack Javascript Developer jobs? Cities in Ontario with the most Full Stack Javascript Developer job openings:
Full Stack Javascript Developer jobs near you
Infographic showing various Full Stack Javascript Developer job openings in Ontario as of May 2026, with employment types broken down into 99% Full Time, and 1% Part Time. Highlights an 67% Physical, 11% Hybrid, and 22% Remote job distribution, with an average salary of $116,068 per year, or $55.8 per hour.
Senior Full Stack Developer

Senior Full Stack Developer

CDM Smith

Toronto, ON • Remote

Other

Posted 11 hours ago

CDM Smith rating

9.1

Company rating: 9.1 out of 10

Based on 18 frontline employees who took The Breakroom Quiz

20th of 351 rated engineering

Job description

Trinnex, a wholly owned subsidiary of CDM Smith, is looking for a Senior Full Stack Developer to join our growing Digital Solutions team. You'll work on modern, highimpact applications that bring together sensor and IoT data, geospatial technologies, machine learning, and AIpowered agent systems to solve realworld engineering and environmental challenges.
In this role, you'll help shape nextgeneration intelligent applications, including systems that use autonomous and semiautonomous agents, retrievalaugmented generation (RAG), and agent orchestration frameworks. You'll work across the full technology stack, collaborate with a talented, crossfunctional team, and have the opportunity to influence technical direction while building scalable, productionready solutions.
Duties and Responsibilities:
Full Stack & API Development
Design, develop, and maintain scalable frontend and back end applications using modern frameworks and architectures.
Build, integrate, and optimize REST, GraphQL, and other APIs to support secure, high performing systems.
Apply best practices in code quality, security, performance optimization, and testing throughout the development lifecycle


AI Enabled & Agent Based Systems
Contribute to the design and implementation of AI driven features, including agent based workflows and intelligent application components.
Support systems that use retrieval augmented generation (RAG), vectorized data access, and contextual retrieval strategies.
Collaborate on architectures that enable agent orchestration and agent to agent (A2A) communication.
Testing, Deployment, and DevOps Collaboration
Develop and execute automated testing strategies to ensure reliability and performance.
Deploy applications through CI/CD pipelines and partner with DevOps teams to support scalability, monitoring, and production readiness.
Troubleshoot and resolve complex issues across the application stack.
Collaboration, Mentorship, and Delivery
Collaborate with developers, designers, DevOps, and domain experts on solution design and feature delivery.
Conduct code reviews and contribute to continuous improvement of engineering practices.
Mentor and support junior developers across frontend, backend, and integration work


Skills and Abilities
Strong experience designing and developing full stack web applications.
Proficiency with modern front end frameworks (e.g., React with Context API and Hooks).
Experience with back end development using C#/.NET and JavaScript/TypeScript (Node.js, Next.js, Express).
Solid understanding of API design, data integration, and system architecture.
Experience with geospatial technologies such as ESRI, PostGIS, and Mapbox.
Demonstrated ability to diagnose and solve complex technical problems.
Strong communication and collaboration skills, with the ability to explain technical concepts clearly.
Experience designing or contributing to agentic systems, including multi step or multi agent workflows.
Understanding of RAG patterns, agent orchestration concepts, and A2A communication models.
Familiarity with AI development tools and assistants (e.g., Claude, Cursor).
Proactive mindset toward learning and applying emerging technologies.
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What CDM Smith employees say

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Benefits

Hours and flexibility

Workplace

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About CDM Smith

Sourced by ZipRecruiter

CDM Smith is a distinguished name in the engineering and construction industry, providing insightful consulting, designing, and execution services. Based in Boston, Massachusetts, US, this full-service engineering and construction firm was founded in 1947 and has been contributing to the national and global infrastructure ever since. Serving across diverse sectors like transportation, environment, water, energy, and facilities, they have built a reputation for excellence. The company firmly stands on its mission of delivering lasting, superior solutions to the world's complex challenges, thereby ensuring their clients create a transformative impact.

Industry

Civil engineering construction

Company size

5,001 - 10,000 Employees

Headquarters location

Cambridge, MA, US

Year founded

1947

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