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Kelly

Javascript Developer

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 26, 2026
Experience: 8+ years of application development experience.
Posting language: English
Posted: Oct 27, 2026

Original job description

Job Title: Senior React / JavaScript Developer

Location: Toronto, ON (3 days onsite per week)

Hiring Event: November 18–19

Role Overview: Seeking an Engineer to join its Unified Fixed Income Trade Processing (FITP) team. FITP is a global trading platform supporting derivatives, cash, exotics, and securities financing products, serving 3,800+ users and processing approximately 200,000 transactions daily. The role focuses on building scalable, high-performance UI applications, modernizing services, and enabling automated CI/CD pipelines.

Key Responsibilities

Design, develop, and maintain robust, scalable, and testable applications.
Build and enhance UI components using React, JavaScript, HTML5, and Node.js.
Collaborate with cross-functional teams to deliver new products, system enhancements, and process improvements.
Improve application performance, reliability, scalability, and testability.
Contribute to service modernization, CI/CD automation, and overall application architecture.
Establish coding, testing, debugging, and implementation standards.
Analyze complex technical and business problems and develop innovative solutions.
Mentor mid-level developers and ensure compliance with risk, security, and regulatory standards.

Required Skills & Qualifications

8+ years of application development experience.
Strong expertise in JavaScript, React, HTML5, and Node.js.
Solid understanding of web development, system design, application performance, and testing.
Experience working in large-scale, collaborative development environments.
Strong analytical, problem-solving, communication, and leadership skills.
Ability to manage priorities and drive technical improvements.

Nice to Have: Fixed Income domain knowledge, C#, and .NET Framework.

Education: Bachelor’s degree or equivalent experience required; Master’s degree preferred.

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More about this job

Responsibilities

Design, develop, and maintain scalable, high-performance applications and React-based UI components, while improving reliability, testability, and application architecture. Collaborate across teams on product enhancements and service modernization, automate CI/CD, establish engineering standards, and mentor developers while ensuring risk, security, and regulatory compliance.

Requirements

Requires 8+ years of application development experience and strong expertise in JavaScript, React, HTML5, and Node.js, along with knowledge of web development, system design, performance, and testing. A bachelor’s degree or equivalent experience is required, a master’s degree is preferred, and fixed income knowledge, C#, and .NET Framework are advantageous.

Skills

JavaScript
React
HTML5
Node.js
Application Development
Web Development
System Design
Application Performance
Testing
CI/CD Automation
Service Modernization
C#
.NET Framework
Fixed Income
Technical Leadership

Visa sponsorship

Not detected in the job text

Keywords

JavaScript
React
HTML5
Node.js
C#
.NET Framework
Fixed Income
Trade Processing
Derivatives
Cash Products
Exotics
Securities Financing
Scalable Applications
High-Performance UI
Application Architecture
Service Modernization
CI/CD
Automated Testing
Debugging
System Design
Application Performance
Reliability
Testability
Risk Compliance
Security
Regulatory Standards
Technical Mentoring

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