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Software Dev Engineer, Machine Learning Compilers, Edge AI Compiler and Runtime Team
Amazon
Vancouver, BC
Engineers here bring deep experience across compilers and program analysis, optimization algorithms, computer architecture, machine learning systems, and the practical craft of getting…
Lead Machine Learning Engineer - AI Innovation Teams
Fitch Ratings
Toronto, ON
Full-time
Fitch Ratings is seeking a Lead Machine Learning Engineer to join our new AI Innovation teams in Toronto - a bold initiative building the AI-powered future of financial analysis. We're not…
Lead Machine Learning Engineer - AI Innovation Teams
Fitch Group
Toronto, ON
Fitch Ratings is seeking a Lead Machine Learning Engineer to join our new AI Innovation teams in Toronto - a bold initiative building the AI-powered future of financial analysis. We're not…
Co-op Engineer - Machine Learning and AI Infrastructure
Huawei Canada
Markham, ON
Full-time
Currently pursuing a Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, Machine Learning, or a related field.
Machine Learning Engineer
exacare ai
Canada
Full-time
We are seeking a highly adaptable, creative, and well-rounded Machine Learning Engineer to join our team. You will own the end-to-end ML lifecycle, from dataset creation and foundational…
AI / Machine Learning Engineer
Infoya Career Connect
Toronto, ON · Waterloo, ON
$85,000 to $105,000 CAD / year
Full-time
0–1 year of experience in AI, Machine Learning, Data Science, or Software Engineering (internships, research, and academic projects are considered).
Machine Learning Engineer, Safety and Customer Care AI
Lyft
Toronto, ON
As a Machine Learning Engineer on the SCC team, you will fine-tune and align models and build AI Agents that power how riders and drivers get help. Your work spans the full loop:…
Applied AI, Forward Deployed Machine Learning Engineer
Mistral
Montreal, Quebec
Full-time
You have deep understanding of concepts and algorithms underlying machine learning and LLMs
Machine Learning Engineer 3D Geometry & Multimodal AI Toronto, Canada
Autodesk
Canada
Full-time
We are seeking a Senior Machine Learning Engineer to design, develop, and deploy machine learning solutions for next-generation AI-powered capabilities within Autodesk products. The ideal…
Machine Learning Engineer 3D Geometry & Multimodal AI Toronto, Canada
Autodesk
Toronto, Ontario
Full-time
We are seeking a Senior Machine Learning Engineer to design, develop, and deploy machine learning solutions for next-generation AI-powered capabilities within Autodesk products. The ideal…
Machine Learning Engineer - Enterprise
Boson AI
Toronto, Ontario
$150,000 to $400,000 CAD / year
Full-time
About the Role: We are seeking a skilled, detail-oriented, and passionate Machine Learning Engineer to join our enterprise team. In this pivotal role, you will be at the forefront of…
Senior Machine Learning / AI Engineer
INETCO Systems Ltd.
Vancouver, BC
Full-time
We are looking for a Senior Machine Learning / AI Engineer to help design, build, test and deploy machine learning and AI-based systems for our BullzAI product line.
Applied AI, Forward Deployed Machine Learning Engineer - Montreal
Mistral
Montreal, Quebec
Full-time
You have deep understanding of concepts and algorithms underlying machine learning and LLMs
Machine Learning Engineer, Associate Director
Fitch Group
Toronto, ON
Fitch Ratings is seeking a Machine Learning Engineer to join our new AI Innovation teams in Toronto - a bold initiative building the AI-powered future of financial analysis. We're not…
Senior Machine Learning Engineer
Fitch Group
Toronto, ON
Fitch Ratings is seeking a Senior Machine Learning Engineer to join our new AI Innovation teams in Toronto - where we're building the AI-powered future of financial analysis from the ground…
Machine Learning Engineer, Associate Director
Fitch Group, Inc.
Toronto, ON
Full-time
Fitch Ratings is seeking a Machine Learning Engineer to join our new AI Innovation teams in Toronto - a bold initiative building the AI-powered future of financial analysis. We're not…
Senior Machine Learning Engineer
Motion Recruitment
Toronto, ON
$150,000 to $250,000 USD / year
Full-time
Join an AI Innovation team in Toronto, ON that is building next-generation machine learning platforms and intelligent automation solutions for a global financial information and analytics…
AI Research Engineer
Deloitte
Toronto, ON
Full-time
3+ years experience in machine learning engineering, data engineering, or applied research (industry or academic).
Machine Learning Data Engineer
kadence
Montreal, QC
Full-time
We’re working with an ambitious AI research organization building next-generation machine learning systems and are looking for multiple Senior Machine Learning Data Engineers to join its…
Senior Machine Learning Engineer, GFT
Royal Bank of Canada
Toronto, ON
Full-time
As a Senior Machine Learning Engineer, you will be a key member of a team, developing and deploying large-scale GenAI applications for enterprise use cases. You will build and optimize…
Senior Machine Learning Engineer, GFT
RBC
Toronto, ON
Full-time
As a Senior Machine Learning Engineer, you will be a key member of a team, developing and deploying large-scale GenAI applications for enterprise use cases. You will build and optimize…
Machine Learning Engineer , Amazon Customer Service
Amazon
Vancouver, British Columbia
We are looking for a Machine Learning Engineer on the Data Intelligence team which is part of Amazon Customer Service (CS) team, you will design and build robust, scalable AI/ML systems and…
Staff Machine Learning Engineer
EvenUp
Toronto, Ontario
$212,000 to $301,000 USD / year
Full-time
Join EvenUp as a Staff Machine Learning Engineer and help set the technical direction for how machine learning powers Piai™, our proprietary claims-intelligence platform. This is a…
Senior Machine Learning Engineer
Xero
Remote, Canada
Full-time · Remote
You will join the AI Products group, a diverse team of scientists, engineers, product managers, and analysts within our broader Data & Science division. As a Sr. Machine Learning Engineer,…
Senior Applied Machine Learning Engineer - Asset Intelligence
MaintainX (An Autodesk Company)
Remote, Canada
$123,000 to $180,000 CAD / year
Full-time · Remote
We are seeking a highly skilled and motivated Senior Applied Machine Learning Developer to guide the technical direction and architecture of our Predictive Maintenance and Asset…

kadence

Machine Learning Data Engineer

Montreal, QC, Canada

Job type: Full-time
Apply by: Oct 2, 2026

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At a glance

Automatically prepared from the listing. Check the original description for the full requirements.

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Responsibilities

Design and scale infrastructure to transform raw, web-scale unstructured text into high-quality datasets for training advanced AI models. Develop automated data-quality systems, filtering mechanisms, and internal tools to support AI researchers.

Requirements

Requires 5+ years of experience in machine learning engineering or data infrastructure with strong production-level Python skills. Must have hands-on experience with distributed processing technologies like Spark or Ray and working with large-scale unstructured text datasets.

Experience

5 to 10 years

Working hours

40 hours per week

Work arrangement

On-site

Skills

Python
Spark
Ray
Flink
NLP
LLM Training Data
Distributed Data Processing
Airflow
Prefect
Dagster
Data Curation
Kubernetes
Docker
vLLM
SGLang
Data Pipeline Design

Visa sponsorship

Not detected in the job text

Keywords

Machine Learning
Data Engineering
NLP
LLM
Foundation Models
Web-scale Data
Deduplication
PII Detection
Content-safety Filtering
Common Crawl
Data Leakage Detection
Distributed Systems
Infrastructure-as-code
Experiment Tracking
Data Governance
Trillion-token Scale
Heuristic Filtering
Model-based Quality Scoring
vLLM
SGLang
Docker
Kubernetes
Airflow
Prefect
Dagster
Spark
Ray
Flink
Python
Data Pipelines

Original job description

Senior Machine Learning Data Engineer

Location: Canada

The Opportunity

This is an opportunity to work alongside a highly accomplished AI research team tackling fundamental problems in advanced machine learning.

Rather than maintaining established pipelines, you’ll be helping develop new approaches to training-data engineering and curation where established playbooks often do not yet exist.

The organization is building a substantial technical team in Montreal, and we are hiring multiple people across this area.

If you’ve worked on LLM training data, large-scale NLP pipelines, foundation-model infrastructure or web-scale data processing, I’d be interested in speaking with you.

We’re working with an ambitious AI research organization building next-generation machine learning systems and are looking for multiple Senior Machine Learning Data Engineers to join its growing technical team.

This role sits at the intersection of data engineering, machine learning, NLP, and large-scale training data curation.

You’ll be responsible for building and scaling the infrastructure that transforms raw, web-scale data into high-quality datasets used to train advanced AI models.

The core challenge is engineering data quality at enormous scale: developing filtering systems, model-based quality scoring, dataset transformations, contamination detection, and tooling that allows researchers to understand and work with training corpora effectively.

What You’ll Work On

Design, build and scale pipelines that transform raw web-scale data into high-quality datasets for training large machine learning models.
Process extremely large unstructured text corpora, including datasets at trillion-token scale.
Build sophisticated data-processing systems covering: Deduplication, Model-based quality scoring, Heuristic filtering, Toxicity and content-safety filtering, PII detection and removal, Metadata extraction, Dataset transformations, Versioning and provenance tracking
Develop automated data-quality systems using a combination of heuristics, ML classifiers, LLM-based evaluators and human-in-the-loop workflows.
Build monitoring and guardrails to identify data-quality regressions before they impact downstream model training.
Work closely with AI researchers to understand evolving training-data requirements and identify gaps within existing datasets.
Design robust evaluation contamination and data-leakage detection systems.
Build internal tools that allow researchers to easily explore, query and understand large datasets.
Optimize large-scale distributed processing systems for throughput, reliability and infrastructure cost.

What We’re Looking For

5+ years of experience across machine learning engineering, data processing, NLP, data infrastructure or related areas.
Experience working with very large unstructured text datasets, ideally at web or foundation-model scale.
Strong production-level Python.
Hands-on experience with distributed data-processing technologies such as: Spark, Ray, Flink
Experience designing and optimizing high-throughput distributed pipelines.
Experience with areas such as: PII scrubbing, Content-safety filtering, Dataset quality, Evaluation contamination, Training-data governance
Experience with workflow orchestration frameworks such as Airflow, Prefect or Dagster.
Ability to work closely with both research and engineering teams and translate research requirements into scalable infrastructure.

Particularly Relevant Experience

We’d be especially interested in people who have worked on:

Pretraining or post-training data pipelines for LLMs
Foundation-model training infrastructure
Web-scale text processing
Common Crawl or comparable large-scale datasets
Dataset curation for large language models
LLM-based data-quality evaluation
ML classifiers for filtering or scoring training data
Large-scale data acquisition
Dataset deduplication and contamination detection
Distributed ML/data infrastructure

Experience with vLLM, SGLang, Docker, Kubernetes, infrastructure-as-code, experiment tracking or open-source NLP/data tooling would also be valuable.

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