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Javascript Backend Developer Jobs in Ontario (NOW HIRING)

Back-end Software Engineer

Waterloo, ON ยท Hybrid

CA$86.10K - CA$136.10K/yr

You will work with modern technologies and tools such as GitHub, DevOps pipelines (Jenkins, GitHub ... JavaScript (ReactJS, NodeJS, Redux) Testing, CI/CD & quality Unit and integration testing ...

JavaScript Full Stack Developer - Junior Location: Ottawa, ON (377 Dalhousie Street) Work Model ... NET) on the back end --delivering well-scoped features, bug fixes, and enhancements under the ...

Work closely with backend, DevOps, and cloud platform teams to support endtoend delivery ... Strong expertise with JavaScript/TypeScript, PHP, HTML5, and CSS3. * Deep handson experience with ...

Senior JavaScript Full Stack Developer Team: Development Team Location: Ottawa, Ontario About Rebel ... NET) on the back end --with strong ownership from discovery through deployment and support. In this ...

Develop and maintain web applications using JavaScript & TypeScript. * Work with the team to ... Collaborate with backend developers to integrate RESTful APIs. * Participate in project management ...

Develop and maintain web applications using JavaScript & TypeScript. * Work with the team to ... Collaborate with backend developers to integrate RESTful APIs. * Participate in project management ...

Develop and maintain web applications using JavaScript (ES6+), TypeScript. Work closely with the ... Collaborate with backend developers to integrate RESTful APIs. Participate in project management ...

... 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 ...

... 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 ...

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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 cities in Ontario are hiring for Javascript Backend Developer jobs? Cities in Ontario with the most Javascript Backend Developer job openings:
Senior Full Stack Backend Engineer

Senior Full Stack Backend Engineer

TaliPay, Inc.

Toronto, ON โ€ข On-site

Full-time

Posted 13 days ago


Job description

Salary:

About Us

Talipay is transforming how subcontractor-powered businesses scale their back-office and access the working capital they need to grow. From invoice automation to embedded financing solutions, we help companies in staffing, logistics, and other service industries streamline operations, improve cash flow, and scale confidently.

Were on a mission to reshape how subcontractor-powered industries manage invoicing and paymentsgiving business owners time and capital to focus on growth. As a BDR, youll be an integral part of that mission.

Why Us?

At Talipay, you wont be just another BDR. Youll have the opportunity to help build a category-defining product in a space ripe for innovation. Youll work directly with leadership, see the impact of your work immediately, and grow your career in sales at the ground level of a growing company.


Your Role and Responsibilities

We seek a skilled and experienced Backend Engineer to join our development team. As a Backend Full Stack Developer, you will be responsible for designing, developing, and maintaining the server-side logic and database architecture that powers our web applications. You will work closely with cross-functional teams, including front-end developers and product managers, to deliver high-quality and scalable solutions that meet our business needs.

Join our team and contribute to the development of cutting-edge web applications, utilizing your backend expertise to deliver robust and scalable solutions. Apply now and be a part of our mission to build innovative software solutions that drive our business forward!


The Senior Backend Developer will be responsible for the following:

  • Design and develop server-side applications and APIs to support our web applications, ensuring high performance, scalability, and reliability.
  • Collaborate with front-end developers to integrate server-side logic with user interfaces, ensuring seamless functionality and optimal user experience.
  • Develop and optimize database schemas, queries, and data access layers to ensure efficient data storage and retrieval.
  • Ensure code quality and maintainability by writing clean, well-documented, and efficient code following best practices and coding standards.
  • Participate in architectural discussions and contribute to technical decision-making to improve overall system architecture and performance.
  • Conduct thorough testing and debugging of applications to identify and fix issues, ensuring high software quality and stability.
  • Collaborate with cross-functional teams to gather and understand requirements and translate them into technical solutions.
  • Keep up to date with industry trends and emerging technologies in backend development, sharing knowledge and proposing improvements to the team.
  • Collaborate with DevOps teams to deploy and maintain applications in production environments, ensuring high availability and performance.
  • Troubleshoot and resolve production issues, providing timely support and maintenance for existing applications.


Must-have technologies/skills/education or equivalent:

  • In-depth knowledge of Ruby as well as Ruby on Rails
  • Write well-optimized queries in databases (such as PostgreSQL, and MySQL)
  • Must be able to write data migrations to change the database system while still maintaining stability
  • Understands the core concepts of REST and APIS
  • Good understanding of Redis and concurrent background jobs (Sidekiq, Rescue,..)
  • Can collaborate and follow best practices using Git and GitHub
  • Cloud deployment and basics of DevOps (Heroku, AWS, S3, Cloudflare)
  • Strong ability in writing tests in Rails (Rspec, minitest, feature tests)
  • Grasp the basics of CI/CD (CircleCI, CodeShip,..)
  • Good understanding of payment systems (Stripe, Paypal, ..)
  • Comfortable with Javascript, CSS, and HTML

Technical background:

  • Solid understanding of system testing
  • Excellent understanding of Object Oriented Programming
  • Ability to build flexible systems
  • Solid understanding of concurrency and redundancy
  • Familiarity with third-party APIs
  • Ability to debug critical issues and write documentation
  • Comfortable working with data-intensive applications
  • Excellent communication skills, can work well within a team


Nice-to-have technologies/skills:

  • NodeJS,
  • Python
  • Erlang/Elixir


Seniority:

  • 8Y+


Engagement Type:

  • Full-time (75%+ from home)


Team and Reporting

  • The position will report to the Product Engineering Director.


Challenge Test

  • Dev Team-code-challenge.zip is to be provided and reviewed by our senior reporting engineer.

We thank all applicants for showing their interest. However, only candidates under consideration will be contacted.

Please note:All employment is conditional upon completing and obtaining a satisfactory background check and employment references. Must be able to legally work in Canada.

Employment Equity

We are proud to be an equal opportunity employer striving to foster an inclusive and accessible environment. We are committed to creating an atmosphere without discrimination. We encourage applications from those who will enhance the diversity of our community.

We are committed to providing accommodations for people with disabilities. Should you require an accommodation during the interview process, please make your needs known in advance and we will work with you to meet your accessibility needs.