Applied AI Test Engineer - Intern

Plusgrade Inc.; Toronto; Hybrid; CAD 28,000 - 47,000; Part time

Benefits offered by this job

RRSP Matching

Comprehensive Health Plans

Flexible Paid Time Off

Travel Experience Perk

Annual Wellness Perk

Commuter Perk

Tenure-Based Work From Anywhere

Parental Leave Top Up

Learning Allowance

Job summary

Plusgrade Travel seeks a QA Test Engineer Co-op to help safeguard production AI and ML pipelines. You will build automated tests, validate data contracts, and stress-test non-deterministic AI components.

Work with Python tooling and modern test stacks on live production systems powering travel pricing and partner commerce. You will join a cross-functional Applied AI Engineering team, collaborating on model-serving endpoints and data schemas, while learning from seniors and contributing to robust

Qualifications

• You have hands-on experience designing, writing, and maintaining automated tests.
• You understand test case design, defect tracking, and regression prevention.
• You write clean, functional Python for test automation and scripting.

Responsibilities

• Build and maintain automated test suites that safeguard production ML pipelines.
• Test model-serving endpoints, validate data schemas, and edge cases.
• Develop Python utilities to stress-test AI systems and verify fallbacks.

Tools

GitHub Actions

GitLab CI

Jenkins

Docker

Kubernetes

Airflow

Dagster

Prefect

MLflow

Weights & Biases

dbt

Spark

AWS

GCP

Postman

Locust

k6

Git

Python

Job description

Employment Type: Intern (Fixed Term) (Trainee)

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. Plusgrade powers the global travel industry with its portfolio of leading ancillary revenue solutions. Over 575 airline, hospitality, cruise, passenger rail, and financial services companies trust Plusgrade to create new, meaningful revenue streams through incredible customer experiences. As an ancillary revenue powerhouse, Plusgrade has generated billions of dollars in new revenue opportunities across its platform for its partners, while creating enhanced travel experiences for millions of their passengers and guests. Plusgrade was founded in 2009 with headquarters in Montreal and offices around the world.