Find work in Canada.

494,423 jobs across our Canadian network. How we count

Jobs in Canada

Email me new jobs Save this search

Added 2 months ago
C
Machine Learning Engineer
Clio
Calgary, AB · Burnaby, BC · Vancouver, BC · Toronto, ON
- Full-time
We are currently seeking a Machine Learning Engineer to join our rapidly growing engineering team. This role is for someone who is passionate about building innovative solutions and being…
Added 2 months ago
E
Développeur(-euse) principal(e) de logiciels (contenu) /Principal Software Development Engineer
Expedia
Montreal, QC · Canada - Quebec - Montreal
- Full-time
Added 1 month ago
Senior ML Data Processing Developer
LawZero
Montreal, QC
In this role, you will not just manage data; you will engineer its quality. You will design algorithmic filtering, build model-based scoring mechanics, and ensure rigorous benchmark…
Added 1 month ago
Sr. Systems Engineer, Ruckus
Belden Inc
Cobourg, ON
We are seeking a Systems Engineer to support our Eastern Canada territory, serving our customers, partners, and Canadian Federal Government clients. Candidates must be based in the Montreal…
Added 3 months ago
E
Développeur(-euse) principal d’application mobile − Android / Senior Mobile Developer – Android
Expedia
Montreal, Quebec · Canada - Quebec - Montreal
- Full-time
Added 3 months ago
E
Développeur(-euse) de logiciels sénior(e) (contenu) / Senior Software Development Engineer
Expedia
Montreal, Quebec · Canada - Quebec - Montreal
- Full-time
Added 3 months ago
Q
Scrum Master - French
Quantiphi
Canada
- Full-time
At least one foundational cloud certification (e.g., Azure Fundamentals, AWS Certified Cloud Practitioner, or GCP Associate Cloud Engineer).
Added 3 months ago
Q
TPM/RTE - French
Quantiphi
Canada
- Full-time
Significant experience in a senior role such as Technical Program Manager, Program Manager, or Release Train Engineer, specifically leading large-scale cloud transformation or multi-cloud…
Added 3 months ago
CS
Inference ML API SDET
Cerebras Systems
Toronto, Ontario
- Full-time
As a Senior Software Engineer in Test for the ML API features team, you will lead testing strategy and execution for AI/ML models, evaluating accuracy, fairness, and performance at scale.…
Added 3 months ago
Senior Security Engineer, AI Security
Amazon
Vancouver, British Columbia
The Amazon AI Security team is looking for a Security Engineer to design security controls and help validate that our AI/ML services, applications, and emerging technologies are designed…
Added 4 months ago
P
Senior AI Engineer
Paytm
Toronto, Ontario
- Full-time
Added 4 months ago
C
Senior Data Engineer (Streaming + AI Systems)
Calliere
Toronto, Ontario · Greater Toronto Area, Ontario
- Full-time
…data platform from the ground up. They’re hiring a Senior Data Engineer to lead the design and evolution of real-time data systems and scalable architecture supporting both operational…
Added 4 months ago
TG
AI & ML Intern - Electrical Engineer
Trench Group GmbH
Toronto, Ontario
- $22 to $26 CAD / hour
…documentation solutions that modernize and streamline how we engineer and deliver air core reactors. Working closely with experienced engineers, you will help integrate AI and ML…
Added 4 months ago
W
Staff Software Development Engineer
Wagepoint
Remote, Canada
- $140,000 to $170,000 CAD / year
- Full-time
- Remote
We're looking for a talented Staff Software Development Engineer who enjoys tackling hard problems and wants to create meaningful impact for small businesses across Canada. You will be a…
Added 4 months ago
I
Senior AI Engineer
iManage
Toronto, Ontario
- Full-time
Added 4 months ago
ID
Sr Data Engineer -
iLink Digital
Toronto, Ontario · East Toronto (Studio District), Ontario
- Full-time
We are seeking a highly skilled Databricks Engineer with
Added 4 months ago
FB
Senior AI Software Engineer
fgf brands
Toronto, ON · Greater Toronto Area, ON
- Other
We are seeking a Senior AI software Engineer to serve as a key technical driver within our data science team. In this role, you will be the bridge between conceptual AI research and robust,…
Added 4 months ago
WA
Network Engineer - Data for Autonomous Systems annotation
Weekday AI
Remote, Canada
- Part-time
- Remote
Are you a Level 3 / Tier 3 network support engineer interested in data science and autonomous infrastructure? Our client is building vertically integrated networking systems and using the…
Added 2 months ago
GD
Mechanical Engineering Developer
General Dynamics Missions System International
Ottawa, ON
- Full-time
We're looking for a Mechanical Engineer to support the development of mechanical designs and engineering systems across various products and programs within the organization.
Added 4 months ago
CS
Principal AI Security Engineer
Cerebras Systems
Canada
- Full-time
Cerebras is seeking a Principal AI Security Engineer to lead hands-on security engineering for enterprise IT, infrastructure, AI platforms, and agentic systems.
Added 4 months ago
Software Development Engineer, Amazon Connect Contact Lens
Amazon
Vancouver, British Columbia
Added 1 month ago
GS
SBT Content Software Engineer II
Guidewire Software
Remote, Canada
- Full-time
- Remote
Guidewire’s development team is looking for a smart, proactive, and results-oriented Software Engineer II to build elegant solutions for the property & casualty insurance industry’s…
Added 4 months ago
P
Senior Site Reliability Engineer, AI Infrastructure
PointClickCare
Mississauga, Ontario
- Full-time
Added 4 months ago
NH
Computer Vision/ML Engineer
Norbert Health
Montreal, Quebec
- Full-time
We are looking for our lead deep learning engineer to spearhead the development of our groundbreaking sensing technology.
Added 4 months ago
HT
Research Engineer – Multimodal AI & Interaction
Huawei Technologies Canada Co., Ltd.
Markham, ON
- Full-time

LawZero

Senior ML Data Processing Developer

Montreal, QC, Canada

Apply About employer

Applications open in a new tab.

Job details

Posting language: English
Posted: Sep 9, 2026

Original job description

We are seeking a Senior ML Data Processing Developer to participate in the development, curation, and scaling of our core data asset pipeline. Sitting at the intersection of data engineering, data curation, and machine learning, you will own the end-to-end pipeline that transforms raw web-scale data into high-signal datasets used to train the Scientist AI.

In this role, you will not just manage data; you will engineer its quality. You will design algorithmic filtering, build model-based scoring mechanics, and ensure rigorous benchmark integrity to power the next generation of AI. And as our models push beyond established paradigms, you will design and implement novel data transformations that don't yet have playbooks, working at the frontier of what training data can be.

We are hiring multiple people for this role, and responsibilities may be distributed across the team based on individual experience, skills, and interests.

Key Responsibilities

Partner with the Research team to define, build, automate, scale, and manage data pipelines that transform raw web-scale data into training datasets for the Scientist AI.
Build and maintain data processing pipelines, including deduplication, model-based quality scoring, heuristic filtering, toxicity removal, PII scrubbing, metadata extraction, and proprietary data transformations, with full dataset versioning and provenance tracking, optimizing for throughput and cost at scale.
Ensure all ingested data meets compliance requirements, internal Data Governance policies, and legal obligations.
Develop and refine the scoring and filtering toolchain: heuristics, LLM-as-a-judge evaluators, ML classifiers, metadata extraction modules, and human-in-the-loop review workflows required for data processing and quality assurance.
Instrument data processing pipelines with data-quality monitoring, guardrails, and alerting to catch regressions before they propagate downstream.
Collaborate with the Research team and other teams to understand evolving data requirements, then identify and acquire large-scale text corpora that meet those requirements. This includes conducting systematic coverage analyses to identify gaps in the corpus and develop targeted acquisition strategies to address them, and working with the Legal & Governance Team to license new data sources.
Design and maintain strict leakage detection mechanisms to guard against evaluation contamination across all stages of the data processing pipeline.
Build internal tooling and interfaces that let researchers explore, query, and understand available datasets with minimal friction.

Skills and Qualifications

Degree in computer science, software engineering, or a related field.
Proven track record of handling massive unstructured text datasets (trillion-token scale), with 5+ years of experience in data processing, machine learning engineering or Natural Language Processing (NLP).
Hands-on experience with distributed processing frameworks (e.g., Spark, Ray, Flink), designing and optimizing high-throughput pipelines.
Experience with data privacy implementation (PII scrubbing), content-safety filtering (toxicity, bias), and evaluation-contamination prevention.
Demonstrated ability to work across Research, Engineering, and/or Legal/Governance teams, translating varied requirements into concrete pipeline work.
Strong Python proficiency, including experience writing production-grade data-processing code.
Experience with pipeline orchestration frameworks (e.g., Airflow, Prefect, Dagster).

Nice to have

Experience training, fine-tuning, or deploying ML models for data-quality tasks (classifiers, LLM-based evaluators) and familiarity with LLM inference optimization (e.g. vLLM, SGLang).
Familiarity with containerized deployment (Docker, Kubernetes) and infrastructure-as-code practices.
Familiarity with ML experiment tracking tools (e.g. Weights and Biases).
Experience with data licensing workflows or web-scale data acquisition.
Contributions to open-source data processing or NLP tooling.

What we offer

The chance to contribute meaningfully to a globally critical initiative
Comprehensive health benefits (including mental health and wellness management account)
20 days of vacation per year upon start
Employer contribution of 4% to your retirement savings, with no required employee match
Additional compensation totaling 8% of your salary to apply towards additional retirement savings or bonuses (independent of group and individual performance)
A team of passionate world-class experts in their field
A collaborative and inclusive work environment in our vibrant office space in the heart of Little Italy, in the trendy Mile-Ex district, close to public transportation

About LawZero

LawZero is a non-profit organization committed to advancing research and creating technical solutions that enable safe-by-design AI systems. Its scientific direction is based on new research and methods proposed by Professor Yoshua Bengio, the most cited AI researcher in the world. Based in Montreal, LawZero’s research aims to build non-agentic AI that learns primarily to understand the world rather than to act in it, giving truthful answers to questions based on transparent and externalized probabilistic reasoning. Such AI systems could be used to accelerate scientific discovery, to provide oversight for agentic AI systems, and to advance the understanding of AI risks and how to avoid them. LawZero believes that AI should be cultivated as a global public good - developed and used safely towards human flourishing. For more information, visit www.lawzero.org

You belong here

At LawZero, diversity is important to us. We value a work environment that is fair, open and respectful of differences. We welcome applications from highly qualified individuals interested in working towards our mission in a respectful, inclusive and collaborative setting.

Your personal information will be collected and processed by LawZero to evaluate your application for employment in compliance with our Privacy Policy. Under privacy laws in force in your country of residence, you may have several privacy rights, such as to request access to your personal information or to request that your personal information be rectified or erased. Details on how you can exercise your rights can be found in our Privacy Policy.

Apply About employer

More about this job

Responsibilities

Develop and scale end-to-end data pipelines to transform raw web-scale data into high-quality datasets for training the Scientist AI. This includes implementing algorithmic filtering, quality scoring, and ensuring rigorous benchmark integrity and data provenance.

Requirements

Requires a degree in computer science or a related field and 5+ years of experience in data processing or NLP with massive unstructured datasets. Proficiency in Python and distributed processing frameworks like Spark or Ray is essential.

Skills

Python
Spark
Ray
Flink
Airflow
Prefect
Dagster
Natural Language Processing
Distributed Processing
Data Pipeline Engineering
ML Engineering
PII Scrubbing
Data Governance
Docker
Kubernetes
LLM Evaluation

Benefits

Comprehensive Health Benefits
Mental Health And Wellness Management Account
20 Days Of Vacation Per Year
Additional Compensation Of 8% For Retirement Savings Or Bonuses

Visa sponsorship

Not detected in the job text

Keywords

Machine Learning
NLP
Data Engineering
LLM
vLLM
SGLang
Weights And Biases
Data Curation
Toxicity Removal
PII Scrubbing
Data Leakage Detection
Distributed Computing
Web-Scale Data
Data Versioning
Provenance Tracking
Heuristic Filtering
ML Classifiers
Containerization
Infrastructure-as-Code
Data Licensing

Report this job