ZipRecruiter

Log In

1

Senior Javascript Developer Jobs in Ontario (NOW HIRING)

Emergn

As a Senior Javascript Developer at Emergn, you'll help us shape Emergn's exciting future and play an important role in our growth. Join our Javascript team, and let's make an impact together! * Take ...

StackandCo

Senior Front End Developer

Galway, NY

\n \n \n \n \n We have an exciting new role for a Senior Front\-End Developer to join a growing ... Experience of using modern JavaScript frameworks such as React & Angular \n * Ability to work\/lead ...

Warnerbros

Senior Software Developer

Kanata, ON · On-site

The CNN Growth team is hiring a Senior Software Engineer to help build and evolve the systems and ... Technologies include JavaScript, TypeScript, Node, Python, Svelte, Sass, AWS services, CI/CD ...

Tekgence Inc

Senior Frontend Developer

Toronto, ON

SR Java Front-End Developer Toronto - 4 Days WFO 12 months - contract Proficiency in Angular (preferably Angular 8). Strong knowledge of HTML5, CSS3, and JavaScript TypeScript. Experience with ...

StackandCo

HTML5 \/ CSS3 \/ JavaScript \n * Angularjs \n * Knowledge \/ awareness of the security is desirable \n * Migration experience is desirable \n \n \n \n \n \n

Source Code

RQ11139 - Sr. Software Developer

Toronto, ON

CA$87.38 - CA$104.86/hr

RQ11139 - Sr. Software Developer 6+ month contract (132 business days) ONSITE 5 days - 21 College ... Experience and knowledge of Web Development skills like HTML, XML, XSLT, JavaScript, and Visual ...

StackandCo

The successful Senior PHP Engineer will be designing and developing advanced features, as well as ... JavaScript framework experience advantageous \- ExtJS, Angular or Vue.js \n * Testing experience ...

StackandCo

The successful Senior PHP Engineer will be designing and developing advanced features, as well as ... JavaScript framework experience advantageous \- ExtJS, Angular or Vue.js \n * Bonus points for ...

Source Code

RQ11141 - Sr. Software Developer

Toronto, ON

CA$87.38 - CA$104.86/hr

RQ11141 - Sr. Software Developer 1-year contract (253 business days) ONSITE 5 days - 21 College ... Experience and knowledge of Web Development skills like HTML, XML, XSLT, JavaScript, and Visual ...

next page

Showing results 1-20

All JobsSenior Javascript Developer JobsSenior Javascript Developer Jobs in Ontario

Senior Javascript Developer information

What is a Senior Javascript Developer job?

A Senior JavaScript Developer is a highly experienced programmer specializing in JavaScript, including frameworks like React, Angular, or Node.js. They are responsible for designing, developing, and optimizing web applications, ensuring high performance and maintainability. Additionally, they provide technical leadership, mentor junior developers, and collaborate with cross-functional teams to deliver scalable solutions. Strong problem-solving skills, deep knowledge of JavaScript best practices, and experience with modern development tools are essential for this role.

What are typical challenges faced by Senior Javascript Developers in day-to-day work?

Senior Javascript Developers often encounter complex challenges such as optimizing web application performance, ensuring code scalability and maintainability, and integrating with diverse APIs and services. They are also expected to troubleshoot legacy code and address security vulnerabilities, all while keeping up with the rapidly evolving JavaScript ecosystem. Collaborating with designers, product managers, and junior developers can add layers of complexity to project requirements. However, overcoming these challenges is rewarding and provides opportunities to shape technical strategy and influence best practices within the team.

What are the key skills and qualifications needed to thrive in the Senior Javascript Developer position, and why are they important?

To thrive as a Senior Javascript Developer, a strong command of JavaScript (including ES6+), advanced front-end frameworks (like React, Angular, or Vue), and back-end technologies (such as Node.js) are essential, along with several years of professional coding experience. Familiarity with version control systems (like Git), CI/CD pipelines, and relevant certifications (e.g., AWS Certified Developer or JavaScript certifications) is highly valued. Excellent problem-solving abilities, mentorship skills, and effective communication help developers collaborate and lead within cross-functional teams. These skills enable Senior Javascript Developers to build robust applications, guide junior team members, and drive innovation in fast-paced tech environments.

What are the most commonly searched types of Javascript Developer jobs in Ontario? The most popular types of Javascript Developer jobs in Ontario are:
What are popular job titles related to Senior Javascript Developer jobs in Ontario? For Senior Javascript Developer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Senior Javascript Developer jobs in Ontario look for? The top searched job categories for Senior Javascript Developer jobs in Ontario are:
What cities in Ontario are hiring for Senior Javascript Developer jobs? Cities in Ontario with the most Senior Javascript Developer job openings:
What are popular job titles related to Senior Javascript Developer jobs in ON? For Senior Javascript Developer jobs in ON, the most frequently searched job titles are:
Senior Javascript Developer jobs near you
Infographic showing various Senior Javascript Developer job openings in Ontario as of June 2026, with employment types broken down into 97% Full Time, 2% Part Time, and 1% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution.

Lead Javascript Developer

Emergn

On-site, Remote

Full-time

Posted 14 days ago

Job description

We are a global digital business services organization with a mission to improve the way people and companies work. Forever. Our Consulting, Technology and Learning teams design and deliver transformational digital products and experiences that add value to our clients' businesses and to their customers' lives.  
Every day, across the world, our teams are pioneering faster, better ways to bring our client's most exciting ideas to life. Are you ready to make an impact? 
As a Senior Javascript Developer at Emergn, you'll help us shape Emergn's exciting future and play an important role in our growth.  
Join our Javascript team, and let's make an impact together! 
  • Take responsibility over designing, coding, testing and deploying Javascript-based applications.
  • Collaborate with cross-functional teams to define project scope, architecture and delivery timelines.
  • Conduct code reviews and enforce coding standards and best practices.
  • Troubleshoot, debug and optimize applications for performance and scalability.
  • Maintain code integrity and organization that delivers real business value.
  • Actively participate in all frontend activities.


    • Extensive frontend development experience with Javascript
    • Very good knowledge of React
    • Experience with Ruby on Rails , TypeScript, Redux, PostgreSQL, Docker,OpenAI
    • Very good English skills - written and spoken.
Location requirement:
  • Although this position offers the possibility to work remotely, you must be based in Poland.

  • A flexible work environment: you can work remotely or hybrid from Poland.
  • Working with the latest tools and technologies on meaningful client engagements. 
  • Career growth opportunities and a clear progression framework. 
  • Educational programs and opportunities of training and certification at the expense of the company.  
  • Local teambuilding activities and get-togethers.  


Apply