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Senior Javascript Developer Jobs in Ontario (NOW HIRING)

Source Code

RQ11140 - Sr. Software Developer

Toronto, ON · On-site

CA$87.38 - CA$104.86/hr

RQ11140 - Sr. Software Developer 6+ month contract (147 business days) ONSITE 5 days - 21 College ... Experience and knowledge of Web Development skills like HTML, XML, XSLT, JavaScript, and Visual ...

StackandCo

... a Senior .Net Developer. This is for a project due to kick off in March and is a daily rate ... Experience with HTML, JavaScript and web development frameworks \n * Extensive involvement in ...

StackandCo

\n \n \n \n \n Full Stack Software Developer I have a open role for a Senior Full Stack Web ... Net, HTML\/CSS\/Javascript, SQL Server and have some UI Experience in design. This role is with a ...

Rebel

JavaScript Full Stack Developer Junior

Ottawa, ON · On-site

JavaScript Full Stack Developer - Junior Location: Ottawa, ON (377 Dalhousie Street) Work Model ... Help translate requirements into simple technical solutions with support from senior teammates and ...

Targeted Talent

Senior Web Developer

Kitchener, ON · Remote

$85K - $110K/yr

We are looking for an experienced Senior Web Developer for our client. This is a permanent position that is completely remote and will be even post-COVID. Our client is an enterprise-backed software ...

Targeted Talent

Senior Web Developer

Kitchener, ON · Remote

$85K - $110K/yr

We are looking for an experienced Senior Web Developer for our client. This is a permanent position that is completely remote and will be even post-COVID. Our client is an enterprise-backed software ...

StackandCo

... Senior Front End Developer with significant Angular experience to join their team for 12 months ... Excellent knowledge of HTML, CSS and JavaScript \n * Confidence with Angular 2+ \n * Experience in ...

Poly Services Group

Senior Java Developer

Toronto, ON · On-site

SENIOR JAVA SOFTWARE DEVELOPER Location: Toronto, ON (uptown) Industry: Technology Type: Permanent ... Experience with PKI, Cryptography algorithms, Java Cryptographic libraries, JavaScript and UI ...

Targeted Talent

Senior Node.js Developer

Waterloo, ON · Remote

We are looking for an experienced Senior Node.js Back-End Developer for our client. This is a ... Experience working with Front-End JavaScript frameworks like React / Redux / Bootstrap * Good ...

StackandCo

Senior Java Developer

Galway, NY · On-site

\n \n \n \n \n Our client in Galway are beginning to hire Java Engineers (up to senior level) to ... JavaScript experience would be nice to have (Angular ideal) \n * Spring experience \n * Strong ...

Targeted Talent

Senior Node.js Developer

Ottawa, ON · Remote

We are looking for an experienced Senior Node.js Back-End Developer for our client. This is a ... Experience working with Front-End JavaScript frameworks like React / Redux / Bootstrap * Good ...

Targeted Talent

Senior Node.js Developer

Ottawa, ON · Remote

We are looking for an experienced Senior Node.js Back-End Developer for our client. This is a ... Experience working with Front-End JavaScript frameworks like React / Redux / Bootstrap * Good ...

Targeted Talent

Senior Node.js Developer

Waterloo, ON · Remote

We are looking for an experienced Senior Node.js Back-End Developer for our client. This is a ... Experience working with Front-End JavaScript frameworks like React / Redux / Bootstrap * Good ...

Geotab

Senior Software Developer

Oakville, ON

Geotab is seeking a Senior Software Developer who will create web-based applications in JavaScript, C#, and SQL to create fast and responsive user interfaces. The projects will vary in scope ...

Rivalry

Engineering and Product Seniority: Senior/Lead TL/DR: We are looking to add a highly skilled and ... Strong Knowledge of JavaScript (ES6+) / TypeScript * Strong understanding of inner workings of ...

Emergn

As a Senior MEAN stack Developers at Emergn, you'll help us shape Emergn's exciting future and play ... Join our Javascript team, and let's make an impact together! * Maintain code integrity and ...

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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.
RQ11140 - Sr. Software Developer

RQ11140 - Sr. Software Developer

Source Code

Toronto, ON • On-site

CA$87.38 - CA$104.86/hr

Contractor

Posted 17 days ago

Job description

RQ11140 - Sr. Software Developer

6+ month contract (147 business days)

ONSITE 5 days - 21 College Street, Toronto

MUST HAVES:

  1. Over 8+years of overall experience in entire Software Development Life Cycle as well as Microsoft .Net Framework Technologies. Having sound knowledge of developing web-based B2B and B2C applications in the client/server environment.
  2. Experience and knowledge of Web Development skills like HTML, XML, XSLT, JavaScript, and Visual Studio 2005/2008/2010
  3. Expertise in database systems, MS SQL 2005, 2008, 2012 and stored procedures

Nice-to-have:

  1. OPS experience (preferably)

Scope

  • The Justice Technology Services - Digital Design Branch requires one (1) senior Software Developer with 8+ years of experience for building a modern digital information system and its integration with other internal and external applications.

Assignment Deliverables

  • The Justice Technology Services - Digital Design Branch requires one (1) senior Software Developer with 8+ years of experience for building a modern cloud-based system and it's integration with other internal and external applications
    • Provide application support
    • Support the testing team during system and UAT testing
    • Prepare deployment packages of code and instructions for builds in Development, UAT, and Production environments
    • Participate in Knowledge transfer

Experience and Skillset Requirements:

Mandatory Requirements

  • Over 8+ years of overall experience in entire Software Development Life Cycle as well as Microsoft .Net Framework Technologies. Having sound knowledge of developing web based B2B B2C applications in the client/server environment.

Desired Skills and Experience

  • Extensive implementation experience in installation, configuration, customization and extension of Microsoft Azure as well as doing the deployment, trouble shooting and production support for the applications developed.
  • Experience in developing web-based solution including sitemap writing client side JavaScript.
  • Hands-on experiences in developing Web/Windows applications using C#, .net Core, ADO.net, SQL Server 2005/2008R2, and .Net Framework 4.0/5.0 with strong knowledge of Object-Oriented concepts.
  • Expertise in Database Systems, SQL, and Stored Procedure.
  • Good knowledge of Web Development skills like HTML, XML, XSLT, JavaScript, and Visual Studio 2005/2008/2010.
  • Worked on setting up relationships between System and Custom entities
  • Worked on Form customization using JavaScript
  • Experience in converting client requirements and functional specifications to technical design with effort estimation.
  • Expertise in generating Entity relationship diagrams to describe the relation between different entities.
  • Experience in converting client requirements and functional specifications to technical design with effort estimation and doing development for the same.
  • Excellent analytical, logical and interpersonal skills. Hard working and fast learner with self motivated personality.
  • Good knowledge of Microsoft IIS 7.0/8.0
  • Good analytical, communication skills and ability to work independently and perform as part of a team.
  • Technical Skills:
    • Languages & Scripting: C#, CSS, Java Script, JQuery, XML, XSL, HM, XSLT.
    • Frameworks: ASP.NET, MVC, AJAX, WPF, WCF, Windows & Web Services.
    • Web Server: Internet Information Services (IIS) 7.0, 8.0.
    • Databases: MS SQL Server 2005,2008,2012.
    • Reporting Tools: Crystal reports, Excel, SSRS
    • Development Tools: Visual studio (2015, 2013, 2010), MS Project.
    • Operating Systems: Windows 10/8/7/XP, Windows server 2008,2012
    • Data Migration and Reporting: SSIS, LINQ, SSRS

AI Disclaimer: Source Code may use artificial intelligence (AI) tools to assist in certain aspects of its recruiting and business operations.

Note: The higher end of the range is intended for absolutely exceptional candidates who meet all must-have requirements and most or all nice-to-have qualifications. The client will evaluate candidates based on both rate expectations and overall skill set when shortlisting.

INCORPORATED RATE RANGE (7.25 billable hours per day)

  • $87.38/hr - $104.86/hr Inc.

T4 RATE RANGE (7.25 billable hours per day)

  • $69.90/hr - $83.88/hr T4