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Testing Intern Jobs in Ontario (NOW HIRING)

Spaceium

Electrical Intern (Fall 26)

Ottawa, ON · On-site

As an Electrical Intern, you will work alongside our electrical engineering team on real spacecraft ... Support electrical testing including power, signal integrity, and functional tests * Contribute to ...

Spaceium

Electrical Intern (Winter 27)

Ottawa, ON · On-site

As an Electrical Intern, you will work alongside our electrical engineering team on real spacecraft ... Support electrical testing including power, signal integrity, and functional tests * Contribute to ...

Leggett & Platt

As a CPD Intern , you will support engineering teams involved in continuous product development and ... Engineering Analysis & Support - Help perform basic analysis, testing, or evaluations to support ...

Leggett & Platt

As a CPD Intern , you will support engineering teams involved in continuous product development and ... Engineering Analysis & Support - Help perform basic analysis, testing, or evaluations to support ...

TripArc

Intern - UX Designer

Toronto, ON · On-site

TripArc is looking for a UX Design Intern to join our Product Design team. This internship is an ... Support UX Designers in research, discovery, ideation, prototyping, and usability testing ...

NSF

Supply Chain Food Safety Intern

Guelph, ON · On-site

NSF is seeking to add a Supply Chain Food Safety Intern to its team. In this role, the successful ... We provide science-driven, independent testing, inspection, certification, and advisory services ...

Q-Block Computing

Embedded Systems Developer Intern

Ottawa, ON · On-site

CA$18 - CA$25/hr

  • Medical

  • Dental

  • Vision

  • Life

Participate in system testing, debugging, and performance optimization. * Document design decisions, code, and testing procedures following team practices. * Support laboratory setup and maintenance ...

Q-Block Computing

Embedded Systems Developer Intern

Ottawa, ON · On-site

$18 - $25/hr

  • Medical

  • Dental

  • Vision

  • Life

Participate in system testing, debugging, and performance optimization. * Document design decisions, code, and testing procedures following team practices. * Support laboratory setup and maintenance ...

Ciena

Software Developer Intern - Fall 2026

Ottawa, ON · On-site

CA$25 - CA$35/hr

  • PTO

This co-op/intern opportunity provides hands-on experience contributing to real-world engineering ... The role offers exposure to the development and testing of software that powers flagship networking ...

TMX Group

AV Support Intern

Toronto, ON

CA$20 - CA$25/hr

We are seeking a highly organized, proactive, and technically minded AV Support Intern to join our ... Equipment Lifecycle Support: Assist with the routine servicing, testing, and replacement of AV ...

Thales

CA$45K - CA$55K/yr

  • Medical

  • Dental

  • Life

  • Retirement

  • PTO

This position is Hybrid, Halifax Naval Architect Intern/Co op Position Summary Thales Canada is ... Support management of lifting appliance certification and testing; and * Assure compliance with ...

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Showing results 21-40

All JobsTesting Intern JobsTesting Intern Jobs in Ontario

Testing Intern information

What is a testing intern?

Testing Interns are entry-level professionals, often students or recent graduates, who assist in software or product testing within a company. Their primary responsibilities include executing test cases, reporting bugs, and documenting results to ensure that software or products meet quality standards. Testing Interns work closely with QA teams and developers, gaining hands-on experience in various testing methodologies, tools, and best practices. This role helps them develop technical skills and an understanding of the software development lifecycle.

What are the typical responsibilities and learning opportunities for a testing intern?

As a Testing Intern, you'll typically assist in executing test cases, documenting defects, and collaborating with developers and senior testers to ensure software quality. You'll gain hands-on experience with various testing tools, learn about test planning, and understand the software development lifecycle. This role offers a valuable chance to develop analytical and problem-solving skills while contributing to real-world projects, and you'll often participate in team meetings and code reviews to deepen your understanding of quality assurance practices.

What are the key skills and qualifications needed to thrive as a testing intern, and why are they important?

To thrive as a Testing Intern, you need a foundational understanding of software testing principles, basic programming knowledge, and attention to detail, typically supported by coursework in computer science or related fields. Familiarity with testing tools such as Selenium, JUnit, or Bugzilla and version control systems like Git is often expected. Strong analytical thinking, effective communication, and a willingness to learn help Testing Interns excel in team environments and adapt to new challenges. These skills and qualities ensure accurate defect identification, efficient collaboration, and valuable contributions to software quality.

What are the most commonly searched types of Testing jobs in Ontario?

The most popular types of Testing jobs in Ontario are:

What cities in Ontario are hiring for Testing Intern jobs?

Cities in Ontario with the most Testing Intern job openings:

Testing Intern jobs near you
Infographic showing various Testing Intern job openings in Ontario as of August 2026, with employment types broken down into 1% As Needed, 78% Full Time, 18% Part Time, 2% Contract, and 1% Nights. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution.

Software Development Intern

Lincoln Electric

Hamilton, ON

CA$30/hr

Internship

Posted 3 days ago

New

Lincoln Electric rating

7.2

Company rating: 7.2 out of 10

Based on 50 frontline employees who took The Breakroom Quiz

323rd of 490 rated machine equipment manufacturers

Job description

Lincoln Electric is a high-performance industrial machinery and technology leader who helps customers manufacture and maintain vital equipment and infrastructure. Lincoln Electric’s innovative solutions enable higher quality and productivity across a variety of processes including welding, cutting, brazing, machining, process automation, and field repair. The Company leverages proprietary technologies and expertise in materials science, power electronics, automation, and intelligent software to help customers build better and achieve resilience in their operations. Headquartered in Cleveland, Ohio, Lincoln Electric is the essential ‘Linc’ that keeps the economy running. The Company operates 71 manufacturing and automation facilities across 20 countries and serves customers in over 160 countries. For more information about Lincoln Electric and its products and services, visit the Company’s website at https://www.lincolnelectric.com.

Location: Hamilton 
Req ID: 29629 

Hourly Rate: $30

​

Role Summary

We are looking for a Software Engineering Intern to join our development team and gain hands-on experience building, testing, and supporting software applications. This role offers exposure to modern software development practices, troubleshooting real-world issues, and collaborating with experienced engineers on production software systems.

Key Responsibilities
  • Assist in developing, testing, and maintaining software applications and services.
  • Write and debug code under the guidance of senior engineers.
  • Investigate software issues using logs, debugging tools, and code analysis.
  • Support troubleshooting and root cause analysis of defects and production issues.
  • Contribute to software testing, validation, and documentation.
  • Participate in code reviews and team discussions.
  • Work with cross-functional teams to support software releases and enhancements.
  • Learn and apply software engineering best practices, including source control and agile development methodologies.
Required Qualifications
  • Currently pursuing or recently completed a degree or diploma in Software Engineering, Computer Science, Computer Engineering, Mechatronics, or a related field.
  • Experience with object-oriented programming through coursework, projects, internships, co-op placements, or personal projects.
  • Preferred: C# programming experience.
  • Also accepted: Python, Java, C++, JavaScript/TypeScript, or other object-oriented languages.
  • Basic understanding of software design, debugging, and testing principles.
  • Strong analytical and problem-solving skills.
  • Ability to investigate issues and learn from logs, error messages, and troubleshooting tools.
  • Familiarity with Git or other source control systems.
Preferred Qualifications
  • Experience with .NET, SQL, REST APIs, or modern application development frameworks.
  • Familiarity with Visual Studio, VS Code, Azure DevOps, GitHub, or similar development tools.
  • Experience with academic, open-source, internship, co-op, or personal software projects.
  • Familiarity with AI-assisted development tools such as GitHub Copilot, Microsoft Copilot, Cursor, ChatGPT, or similar tools.
  • Interest in applying AI tools to improve coding, testing, debugging, documentation, and productivity.
  • Exposure to automation, robotics, manufacturing systems, IoT, or hardware/software integration is a plus but not required.
What You'll Learn
  • Professional software development practices and workflows.
  • Troubleshooting, debugging, and root cause analysis techniques.
  • Application design, testing, and deployment processes.
  • Collaboration within a cross-functional engineering team.
  • Effective use of modern AI-assisted development tools.
  • Real-world software engineering and production support experience.
Success Profile
  • Curious, proactive, and eager to learn.
  • Strong problem-solving and analytical thinking skills.
  • Comfortable working in a technical team environment.
  • Takes ownership of tasks and follows through on solutions.
  • Communicates effectively and asks thoughtful questions.
  • Demonstrates a passion for building high-quality software.

Lincoln Electric is an Equal Opportunity Employer. We are committed to promoting equal employment opportunity for applicants, without regard to their race, color, national origin, religion, sex (including pregnancy, childbirth, or related medical conditions, including, but not limited to, lactation), sexual orientation, gender identity, age, veteran status, disability, genetic information, and any other category protected by federal, state, or local law.

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