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Acunor

Senior QA – Backend Automation & Data Testing

ON, Canada
Ontario, Canada, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 26, 2026
Experience: 5+ years of experience in software QA, backend automation, and data testing.
Posting language: English
Posted: Oct 27, 2026

Original job description

Job Title: Senior QA Engineer – Backend Automation & Data Testing

Location: Montreal, QC (Remote) / Toronto, ON (Hybrid – 3 Days Onsite)

Job Type: Contract

Language: French Mandatory

Job Description

We are seeking an experienced Senior QA Engineer with strong expertise in Python automation, backend testing, SQL, REST APIs, and cloud data pipeline validation. The ideal candidate will have hands-on experience testing high-volume transaction processing systems and ensuring data integrity across cloud-based platforms.

Primary Skills

Python, Pytest, Requests, Pandas
Advanced SQL
Backend Automation Testing
REST API Testing
ETL/ELT Testing
AWS Cloud Services
MySQL, Snowflake, Hive
Performance and Load Testing
French Language Proficiency

Key Responsibilities

Develop Python automation frameworks using Pytest and Requests.
Simulate high-volume trade transactions and validate backend systems.
Test AWS ETL/ELT pipelines and identify data-quality issues.
Write complex SQL queries to validate data accuracy and consistency.
Perform REST API testing and troubleshoot backend failures.
Identify performance bottlenecks and collaborate with development teams.
Support scheduled releases and resolve operational issues.

Required Qualifications

5+ years of experience in software QA, backend automation, and data testing.
Strong Python programming skills.
Advanced SQL skills, including complex joins and window functions.
Hands-on experience with API automation and data pipeline testing.
Experience with AWS services such as S3, EC2, EMR, Lambda, and Athena.
Experience with MySQL, Snowflake, or Hive.
French language proficiency is mandatory.

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More about this job

Responsibilities

Develop Python-based automation frameworks and test high-volume transaction processing systems, REST APIs, and backend services. Validate AWS data pipelines and data integrity using SQL, identify performance bottlenecks, and support releases and operational issue resolution.

Requirements

Requires at least five years of software QA, backend automation, and data testing experience, along with strong Python and advanced SQL skills. Candidates must have hands-on API automation and data pipeline testing experience, familiarity with AWS services and MySQL, Snowflake, or Hive, and French proficiency.

Skills

Python
Pytest
Requests
Pandas
Advanced SQL
Backend Automation Testing
REST API Testing
ETL/ELT Testing
AWS Cloud Services
MySQL
Snowflake
Hive
Performance and Load Testing
French Language Proficiency

Visa sponsorship

Not detected in the job text

Keywords

Python
Pytest
Requests
Pandas
SQL
Backend Automation
REST APIs
ETL
ELT
AWS
Amazon S3
Amazon EC2
Amazon EMR
AWS Lambda
Amazon Athena
MySQL
Snowflake
Hive
Performance Testing
Load Testing
Data Quality
Data Integrity
Transaction Processing
Cloud Data Pipelines
API Automation
Window Functions
Complex Joins
Software QA
French

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