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J&M Group

Senior JavaScript Developer

Toronto, ON, Canada

Contract

Within 25 km of Vaughan · About 22.9 km from the city centre

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Job details

Job type: Contract
Apply by: Apr 27, 2027
Experience: 5 8 years of JavaScript development experience
Posted: Oct 29, 2026

Original job description

We are hiring for a Senior JavaScript Developer. This role focuses on server-side JavaScript development and data processing solutions.

The ideal candidate has strong experience with JavaScript, Node.js, ETL scripting, and data integration with C# applications.

What You Bring

5 8 years of JavaScript development experience
Strong hands-on experience with Node.js and server-side JavaScript execution
Experience developing ETL scripts for data extraction, transformation, and loading
Experience with data fetching, validation, and quality checks
Knowledge of data handoff and integration with downstream C# applications

What You'll Do

Build and maintain data processing solutions
Develop and optimize ETL scripts across multiple source systems
Implement efficient data-fetching mechanisms
Validate data quality and ensure reliable data transfer to C# processes

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More about this job

Responsibilities

Build and maintain data-processing solutions, including ETL scripts that work across multiple source systems. Develop efficient data-fetching mechanisms, validate data quality, and ensure reliable transfer to downstream C# processes.

Requirements

Requires 5–8 years of JavaScript development experience and strong hands-on experience with Node.js and server-side JavaScript. Candidates should have experience developing ETL scripts, fetching and validating data, and integrating data with downstream C# applications.

Skills

JavaScript
Node.js
Server-Side JavaScript
ETL Scripting
Data Extraction
Data Transformation
Data Loading
Data Integration
Data Fetching
Data Validation
Data Quality Checks
C#

Visa sponsorship

Not detected in the job text

Keywords

JavaScript
Node.js
Server-Side Development
ETL
Data Extraction
Data Transformation
Data Loading
Data Processing
Data Integration
Data Fetching
Data Validation
Data Quality
Source Systems
C#
Data Handoff

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