About the role#
Testing machine learning pipelines and autonomous agents requires a different approach than testing deterministic software. As an Applied AI Test Engineer intern, you will work with the Applied AI Engineering team to break live AI systems, catch hallucinations, and ship resilient test automation. You will report to a Senior SDET and contribute to critical initiatives that power travel pricing and partner commerce.
What you'll do#
- Build and maintain automated test suites for production machine learning pipelines and agentic AI systems.
- Test model-serving endpoints and validate data schemas.
- Assert against non-deterministic agent workflows.
- Develop Python utilities to stress-test edge cases before code ships.
- Triage complex failures and verify fallback paths.
What you'll need#
- Ability to learn unfamiliar systems and complex codebases quickly.
- Hands-on experience designing, writing, and maintaining automated tests.
- Strong understanding of test case design, defect tracking, and regression prevention.
- Clean, functional Python skills for test automation and scripting.
- Experience building utilities, data-setup scripts, or running API tests with tools like pytest or Postman.
- Understanding that machine learning models and AI agents fail differently than traditional code.
- Experience testing data contracts, pipeline reproducibility, and edge cases.
- Experience using coding assistants and LLMs to generate test scaffolding, write scripts, or inspect errors.
Location & details#
- Location: Toronto, Ontario, Canada.
- Modality: On-site.
- Employment: Full-time internship.
- Majors: Computer Science or Computer Engineering.
- Term: Rolling.
About Plusgrade
Plusgrade develops software solutions for the global travel industry. It provides tools that help airlines, cruise lines, and hotels manage ancillary revenue. The company started in 2009 and maintains its headquarters in Montreal. It employs between 501 and 1,000 people across its global offices.
How to get in at Plusgrade
Applying early gives you a distinct advantage at Plusgrade because recruiters review applications before the pile grows. Intern Insider sends an instant alert the moment a role matching your target is published anywhere, so you can be among the first to submit your materials. This timing often makes the difference in getting your resume seen. You can also improve your response rates by reaching out to the people behind the roles. Intern Insider surfaces the recruiters behind Plusgrade positions so you can contact them directly to ask about the team or a potential referral. A professional, direct inquiry often yields better results than waiting for a system to process your application.
