Senior Data Scientist – French Language Proficiency

LexisNexis

Senior Data Scientist II at LexisNexis developing cutting-edge AI solutions for legal analytics. Collaborating with teams, mentoring juniors, and deploying advanced machine learning models.

Posted 4/26/2026full-timeMontreal • 🇨🇦 CanadaSenior💰 CA$95,100 - CA$158,500 per yearWebsite

Tech Stack

Tools & technologies

AWSHadoopPythonSpark

About the role

Key responsibilities & impact

Working closely with other data scientists and engineers to design, develop, and deploy AI solutions.
Leading the development of advanced AI and machine learning models to solve complex business problems
Research, build, and deploy models based on both shallow and deep machine learning.
Train robust NLP-based models on a very large corpus of data
Collaborating with cross-functional teams to ensure AI solutions are aligned with business goals and customer needs.
Mentoring junior data scientists and provide guidance on AI and machine learning best practices.
Designing APIs for disseminating data science outputs to various business units.
Overseeing the scaling of production systems to meet growing demands.

Requirements

What you’ll need

Possess an advanced or Master's education in Computer Science, Mathematics, Statistics, or a related field.
Have experience working directly with large language models and transformer-based architectures including BERT, RoBERTa, T5 etc.
Have experience and knowledge of applying LLMs including models of GPT, Claude, Mistral, Phi family.
Knowledge of advanced prompting techniques and agent-based solutions
Demonstrate proficient experience with machine learning algorithms, including deep learning, gradient boosting, and random forests
Possess advanced programming skills in Python, R, or other relevant languages for data analysis.
Be proficient in working with big data technologies and tools like Hadoop, Spark, or AWS.
Be a natural problem solver, able to lead and mentor junior data scientists, and collaborate with cross-functional teams

Benefits

Comp & perks

Comprehensive, multi-carrier program for medical, dental and vision benefits
401(k) with match and an Employee Share Purchase Plan
Wellness platform with incentives
Headspace app subscription
Employee Assistance and Time-off Programs
Short-and-Long Term Disability, Life and Accidental Death Insurance, Critical Illness, and Hospital Indemnity
Family Benefits, including bonding and family care leaves, adoption, and surrogacy benefits
Health Savings, Health Care, Dependent Care and Commuter Spending Accounts
Up to two days of paid leave each to participate in Employee Resource Groups and to volunteer with your charity of choice

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

AI solutionsmachine learning modelsNLP-based modelslarge language modelstransformer-based architecturesGPTBERTdeep learningPythonR

Soft Skills

mentoringcollaborationproblem solvingleadershipguidance

Certifications

Master's degreeadvanced education in Computer Scienceadvanced education in Mathematicsadvanced education in Statistics