Applied AI Test Engineer - Intern

Plusgrade; Toronto; Hybrid; CAD 28,000 - 36,000; Full time

Benefits offered by this job

RRSP Matching

Comprehensive Health Plans

Flexible PTO

Learning Allowance

Job summary

Plusgrade in Toronto is seeking an Applied AI Test Engineer - Intern to join the Applied AI Engineering team. You will help test ML pipelines, validate data schemas, and build test automation for model-serving endpoints and AI agents.

You'll work with Python, pytest, Postman and other tools to stress-test edge cases before releases, contributing to travel pricing and partner commerce initiatives.

Qualifications

• Experience designing, writing, and maintaining automated tests.
• Strong understanding of test case design, defect tracking, and regression prevention.
• Proficiency in Python for test automation and scripting; able to build utilities and data-setup scripts.
• Familiar with API testing and validating data contracts in ML pipelines.

Responsibilities

• Build and maintain automated test suites for production ML pipelines and agentic AI systems.
• Test model-serving endpoints, validate data schemas, and verify non-deterministic agent workflows.
• Develop Python utilities and data-synthesis scripts; triage failures and verify fallback paths.

Skills

Python

Test automation

API testing

Regression testing

LLM testing

Education

Bachelor’s student in CS/SE

Tools

Python

pytest

Postman

Locust

k6

Docker

Kubernetes

AWS

GCP

GitHub Actions

GitLab CI

Jenkins

Job description

Applied AI Test Engineer - Intern# Career Site## Applied AI Test Engineer - InternApply: Hybrid: CAN - Toronto: Full time: Posted 2 Days Ago: JR100227**Employment Type:** Intern (Fixed Term) (Trainee) **Job Description:**# QA Test Engineer Co-op*Testing machine learning pipelines and autonomous agents is completely different from testing deterministic software, and our team needs someone who wants to break live AI systems, catch hallucinations, and ship resilient test automation.* **What You'll Be Doing**Working under the direction of a Senior SDET on the Applied AI Engineering team, you will build and maintain automated test suites that safeguard production machine learning pipelines and agentic AI systems. You will spend your days testing model-serving endpoints, validating data schemas, asserting against non-deterministic agent workflows, and developing Python utilities that stress-test edge cases before code ships. Coding agents and LLM tooling handle the initial test scaffolding and data synthesis, allowing you to focus your attention on triaging complex failures and verifying fallback paths. Everything you test and automate directly unblocks live releases across critical initiatives powering travel pricing and partner commerce. **The Stack**Python · pytest · Postman · Locust · k6 · Airflow · Dagster · Prefect · MLflow · Weights & Biases · dbt · Spark · Docker · Kubernetes · AWS · GCP · GitHub Actions · GitLab CI · Jenkins · Git **What You Bring*** You get up to speed quickly on unfamiliar systems and complex codebases, understanding how components connect and becoming productive on active production suites without needing hand-holding.* You have hands-on experience designing, writing, and maintaining automated tests, with a strong understanding of test case design, defect tracking, and regression prevention.* You write clean, functional Python for test automation and scripting, and you are comfortable building utilities, data-setup scripts, or running API tests with tools like pytest or Postman.* You understand that machine learning models and AI agents fail differently from traditional deterministic code, and you are eager to test data contracts, pipeline reproducibility, and edge cases where output legitimately changes between runs.* When it comes to AI, you already rely on coding assistants and LLMs to generate test scaffolding, write scripts, or inspect errors, with the sharp judgment to catch hallucinations, verify assertions, and reject code that falls short. **Why Plusgrade**Travel is about the moments that make a journey feel personal. At Plusgrade, we build the technology that makes those moments possible, from upgrade offers and loyalty experiences to revenue tools used by 575+ airline, hospitality, cruise, rail, and financial services partners worldwide.The work is global, complex, and rewarding. You will solve meaningful problems, take ownership from idea to outcome, and work alongside people who are smart, curious, and committed to doing great work.We also give our teams access to AI tools and the encouragement to use them thoughtfully, to move faster, explore ideas, and build better ways of working.We trust our teams to do their best work. That means autonomy, flexibility, and room to grow.Come help us shape the future of travel. **What You'll Love About Us** RRSP Matching · Comprehensive Health Plans · Flexible Paid Time Off · Travel Experience Perk · Annual Wellness Perk · Commuter Perk · Tenure-Based Work From Anywhere Program · Parental Leave Top Up · Adventure Pass · Learning Allowance **Our Process**We believe every candidate deserves a fair, transparent experience, so regardless of outcome, everyone gets feedback.Our process: Recruiter call → Hiring Manager interview → Final interview.Plusgrade is an equal-opportunity employer committed to accessible recruitment. We welcome applications from all qualified individuals regardless of gender identity or expression, race, ethnic origin, creed, place of origin, age, sex, marital status, physical or mental disability, sexual orientation, or any other category protected by law. Accommodation is available upon request. We may use AI-assisted tools to help screen and assess applicants for this role. This posting is for an existing vacancy.