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Javascript Backend Developer Jobs in Ontario (NOW HIRING)

Tekgence Inc

Full stack Developer

Toronto, ON

... backend, AI/ML, and product teams to deliver intelligent user experiences ... Required Skills Strong experience in React.js, JavaScript (ES6+), and TypeScript Hands-on ...

StackandCo

... backend Java developers. \n \n \n \n \n \n Requirements \n \n \n * 7 years' experience as a ... Excellent knowledge of HTML, CSS and JavaScript \n * Confidence with Angular 2+ \n * Experience in ...

Great Lakes Group

Be Seen First

SCADA / MES Developer - Smart Manufacturing & IIoT

Burlington, ON · On-site

CA$43 - CA$60/hr

Contribute to full-stack development , including frontend and backend web applications Technical ... Knowledge of web technologies including HTML , CSS , JavaScript , Node.js , PHP , and ASP.NET MVC

New

Great Lakes Group

Be Seen First

SCADA / MES Developer - Smart Manufacturing & IIoT

Toronto, ON · On-site

CA$43 - CA$60/hr

Contribute to full-stack development , including frontend and backend web applications Technical ... Knowledge of web technologies including HTML , CSS , JavaScript , Node.js , PHP , and ASP.NET MVC

New

StackandCo

... similar backend programming language (PHP, C#, Java, Ruby, Python) \n * 3\-5 years' commercial experience with HTML5, CSS3, JavaScript and JQuery \n * Experience developing complex single page ...

Tekgence Inc

Senior Frontend Developer

Toronto, ON

... HTML5, CSS3, and JavaScript TypeScript. Experience with responsive design frameworks (e.g ... Familiarity with RESTful APIs and integrating front-end with back-end services. Knowledge of ...

New

StackandCo

Senior Java Developer

Galway, NY

The bones of the job is Java backend development, so we are seeking strong engineers with Java ... JavaScript experience would be nice to have (Angular ideal) \n * Spring experience \n * Strong ...

Hire DigITalent

Senior Fullstack Developer (Contract | Toronto | Hybrid) * Design and develop scalable backend ... Vue, JavaScript, HTML5, and CSS3 * Integrate frontend and backend systems through APIs and event ...

CMiC

Java Developer

Toronto, ON

CA$90K - CA$110K/yr

... JavaScript, SQL, PL/SQL * Design and implement scalable backend services and RESTful APIs ... Provide integrated testing and debugging for new programming tasks/functions * Collaborate with ...

CMiC

Java Developer

Toronto, ON · On-site

CA$90K - CA$110K/yr

... JavaScript, SQL, PL/SQL * Design and implement scalable backend services and RESTful APIs ... Provide integrated testing and debugging for new programming tasks/functions * Collaborate with ...

Jay Analytix

Python Developer

Toronto, ON

Understanding of web development concepts (HTML, CSS, JavaScript). * Ability to write unit and ... Troubleshoot and debug front-end issues. Back-end Development (Flask): * Design and implement web ...

Jay Analytix

Python Developer

Toronto, ON · On-site

Understanding of web development concepts (HTML, CSS, JavaScript). * Ability to write unit and ... Troubleshoot and debug front-end issues. Back-end Development (Flask): * Design and implement web ...

StackandCo

... back\-end APIs and services for a global customer base. \n \n \n \n \n \n If you are passionate ... JavaScript framework essential \- company use Angular10 but applications welcome from those using ...

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Javascript Backend Developer information

See Ontario salary details

$41.5K

$122.9K

$179K

How much do javascript backend developer jobs pay per year?

As of May 30, 2026, the average yearly pay for javascript backend developer in Ontario is $122,935.00, according to ZipRecruiter salary data. Most workers in this role earn between $100,500.00 and $144,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Javascript Backend Developer, and why are they important?

To thrive as a Javascript Backend Developer, you need strong proficiency in JavaScript (especially Node.js), knowledge of backend frameworks, and a solid understanding of databases such as MongoDB or PostgreSQL. Familiarity with development tools like Git, RESTful APIs, Docker, and cloud platforms, as well as relevant certifications, is highly valuable. Excellent problem-solving, teamwork, and communication skills help you collaborate effectively and deliver robust solutions. These abilities are crucial for building scalable, secure, and maintainable backend services that power modern applications.

What are the typical challenges a JavaScript Backend Developer faces when scaling applications for high traffic?

JavaScript Backend Developers, especially those working with Node.js, often encounter challenges related to handling high concurrency, optimizing database queries, and maintaining application performance under heavy load. Ensuring efficient memory management and implementing robust error handling are also critical when scaling. Working closely with DevOps and frontend teams to optimize APIs and monitor system health is essential for delivering reliable, scalable backend solutions.

What does a JavaScript Backend Developer do?

A JavaScript Backend Developer is responsible for building and maintaining the server-side logic, databases, and APIs that power web applications. They use JavaScript, often with frameworks like Node.js, to process requests, manage data, and ensure smooth communication between the frontend and backend of an application. Their work ensures that web applications are scalable, secure, and efficient. JavaScript Backend Developers also collaborate with frontend developers and other team members to deliver seamless user experiences.

What is the difference between Javascript Backend Developer vs Javascript Frontend Developer?

AspectJavascript Backend DeveloperJavascript Frontend Developer
Primary FocusServer-side development, APIs, databasesUser interface, client-side interactions
Required SkillsNode.js, databases, server managementHTML, CSS, JavaScript, UI frameworks
Work EnvironmentBack-end servers, cloud platformsWeb browsers, client devices
Common UsageBuilding APIs, server logicDesigning web pages, user experience

The main difference between a Javascript Backend Developer and a Javascript Frontend Developer lies in their focus areas. Backend developers handle server-side logic, databases, and APIs, while frontend developers focus on creating engaging user interfaces and client-side interactions. Both roles require JavaScript skills but apply them in different parts of web development projects.

What are popular job titles related to Javascript Backend Developer jobs in Ontario? For Javascript Backend Developer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Javascript Backend Developer jobs in Ontario look for? The top searched job categories for Javascript Backend Developer jobs in Ontario are:
What cities in Ontario are hiring for Javascript Backend Developer jobs? Cities in Ontario with the most Javascript Backend Developer job openings:
Javascript Backend Developer jobs near you
Full stack Developer

Full stack Developer

Tekgence Inc

Toronto, ON

Other

Posted 21 days ago

Job description

Role: Full stack Developer – React with Generative AI Experience

Location: Toronto, ON Hybrid

Experience: 8+ Years

Job Summary

We are looking for a skilled Frontend Developer with strong expertise in React.js and hands-on exposure to Generative AI applications. The ideal candidate should have experience building modern, scalable web applications and integrating AI-powered features such as chat interfaces, copilots, AI search, summarization, or LLM-based workflows into frontend applications.

The candidate should possess strong UI development skills, API integration experience, and the ability to collaborate with backend, AI/ML, and product teams to deliver intelligent user experiences.


Required Skills

Strong experience in React.js, JavaScript (ES6+), and TypeScript

Hands-on experience with Generative AI / LLM integrations

Experience integrating OpenAI, Azure OpenAI, Gemini, Claude, or similar AI services

Strong knowledge of HTML5, CSS3, Tailwind CSS, Material UI, or Bootstrap

Experience with REST APIs and GraphQL

Knowledge of state management libraries like Redux, Context API, Zustand, or Recoil

Experience building responsive and reusable UI components

Familiarity with prompt engineering concepts and AI-powered UI workflows

Understanding of authentication mechanisms (OAuth, JWT, SSO)

Experience with Git, CI/CD pipelines, and Agile methodologies


Responsibilities

Develop and maintain scalable frontend applications using React.js

Build AI-powered UI features such as chatbots, AI assistants, smart search, summarization, and recommendation systems

Integrate frontend applications with LLM APIs and AI platforms

Collaborate with backend and AI/ML teams to implement GenAI-driven solutions

Optimize application performance, responsiveness, and accessibility

Design reusable and modular UI components

Participate in code reviews, testing, debugging, and deployment activities

Work closely with product owners and UX teams to enhance user experience

Ensure security and best practices in frontend development


Preferred Qualifications

Experience with Next.js or server-side rendering frameworks

Exposure to vector databases, RAG architecture, LangChain, or Semantic Search

Experience with WebSockets or real-time applications

Knowledge of cloud platforms like AWS, Azure, or GCP

Familiarity with Docker and Kubernetes

Experience working in enterprise-scale applications


Nice to Have

Experience with AI copilots or conversational UI applications

Exposure to Python or Node.js backend services

Knowledge of AI observability and prompt evaluation tools

Experience with Figma and UI/UX collaboration


Keywords for Sourcing

React.js, Frontend Developer, UI Developer, TypeScript, JavaScript, GenAI, Generative AI, OpenAI, Azure OpenAI, LLM, ChatGPT, Prompt Engineering, AI Chatbot, Next.js, Redux, Tailwind CSS, LangChain, RAG, Semantic Search, REST API, GraphQL

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