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Added 2 mins ago
M
Junior Full Stack Web Developer
Mitel
Ottawa, ON
- Full-time
…to join our front-end UI team. As a full-stack-oriented web developer, your initial focus and training will be on the front-end, building the user-facing applications for our service…
Added 16 mins ago
VS
Intermediate AWS Developer- Java, Spring Boot and TypeScript. ONSITE, CALGARY
Verito Solutions Inc
Calgary, AB
- Contract
Intermediate AWS Developer- Java, Spring Boot and TypeScript.
Added 31 mins ago
Q
Conversation Bot Engineer - Dialogflow CX
Quantiphi
Toronto, ON
- $140,000 to $150,000 CAD / year
- Full-time
We are an Elite and Premier partner to Google Cloud, AWS, NVIDIA, Snowflake, and other leading technology platforms, and our work has been recognized across the industry, including:
Added 31 mins ago
IG
Back End Developer
Insight Global
Canada
- $55 to $75 CAD / hour
- Contract
Insight Global is hiring a Backend Developer for a leading retail organization to support the continued development and enhancement of its finance integration platform. This individual will…
Added 31 mins ago
TC
Senior Database Administrator (Oracle Application DBA / AWS Cloud)
Tata Consultancy Services
Toronto, ON
- $115,000 to $130,000 CAD / year
- Full-time
Partner with infrastructure and cloud teams to design, test, and execute on-premises to AWS cloud database migrations.
Added 31 mins ago
NS
AWS Snowflake Solutions Architect
N2P Systems
Toronto, ON
- Full-time
N2P Systems is seeking an experienced AWS Snowflake Solutions Architect to join our enterprise technology delivery team in Toronto, Ontario, Canada. At N2P Systems, you will put 10+ years…
Added 31 mins ago
DCEO Technician, YYC60 DCEO
Amazon
Airdrie, AB
AWS Infrastructure Services owns the design, planning, delivery, and operation of all AWS global infrastructure. In other words, we’re the people who keep the cloud running. We support all…
Added 31 mins ago
Senior Software Engineer
EarnIn
Vancouver, BC
Hands-on experience with SQL and NoSQL databases (e.g., PostgreSQL, MySQL, DynamoDB) and streaming and messaging technologies (e.g., Kafka, AWS SNS/SQS).
Added 47 mins ago
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AI Engineer
Supra ITS
Mississauga, ON
- Full-time
…Postgres/Supabase, Qdrant, MCP tool servers, LiteLLM gateway, dual-cloud (AWS/GCP) and Docker/Kubernetes…
Added 47 mins ago
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Client Partner, Director - Mid Market Banking, Toronto
Slalom
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Ecosystem Experience: Familiarity partnering and delivering with major ecosystem players (AWS, Microsoft, Google, Salesforce) and modern data/AI platforms.
Added 47 mins ago
SL
Python (API & Platform Engineering)
Staffingine LLC
Toronto, ON
- Contract
Experience with cloud platforms (AWS, Azure, or GCP)
Added 47 mins ago
X
Software Developer
Xe.com
Newmarket, ON
- Full-time
Experience working with AWS and using services like Lambda, ECS, DynamoDB, Kinesis, SNS, SQS, EventBridge, and API Gateway
Added 47 mins ago
SL
Python Developer
Staffingine LLC
Toronto, ON
- Full-time
Experience with cloud platforms (AWS, Azure, or GCP)
Added 1 hour ago
C
Lead Data Scientist / VP
Citi
Mississauga, ON
- Full-time
Experience integrating foundation models through enterprise AI platforms such as Google Cloud and Vertex AI, Microsoft Azure, or AWS.
Added 1 hour ago
C
Lead Data Scientist / VP
Citi
Mississauga, ON
- Full-time
Experience integrating foundation models through enterprise AI platforms such as Google Cloud and Vertex AI, Microsoft Azure, or AWS.
Added 1 hour ago
C
Lead Data Scientist / VP
Citi
Mississauga, ON
- Full-time
Experience integrating foundation models through enterprise AI platforms such as Google Cloud and Vertex AI, Microsoft Azure, or AWS.
Added 1 hour ago
Manager, Application Security
The Canada Life Assurance Company
Toronto, ON
Familiarity with cloud security (AWS, Azure, GCP).
Added 1 hour ago
AI
Data Business Analyst - PL/SQL, T-SQL & Data Warehousing
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Toronto, ON
- Full-time
Knowledge of cloud technologies such as Amazon AWS.
Added 1 hour ago
IG
Software Engineer
IMCS Group
Quebec, QC
- Contract
We are seeking an experienced Angular Developer with 8–10 years of overall IT experience and strong expertise in developing responsive, scalable, and high-performance web applications using…
Added 1 hour ago
GT
Lead Data Engineer / Data Product Lead – Snowflake
Global Technical Talent, an Inc. 5000 Company
Toronto, ON
- $60 to $80 CAD / hour
- Contract
…requiring deep expertise in Snowflake, SQL, Matillion/dbt, AWS, and Python, along with the ability to own data products end to end - from architecture and design through development,…
Added 1 hour ago
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Data & Analytics Leader – BFSI
PeoplePilot
Toronto, ON
- Full-time
- Experience defining enterprise solutions across **Azure, AWS, GCP, Databricks, Snowflake**, and other modern data platforms.
Added 1 hour ago
E
Senior Software Engineer
EarnIn
Vancouver, BC
- Full-time
Hands-on experience with SQL and NoSQL databases (e.g., PostgreSQL, MySQL, DynamoDB) and streaming and messaging technologies (e.g., Kafka, AWS SNS/SQS).
Added 1 hour ago
FI
Senior Full Stack Software Developer (FHIR)
Flexstaf I.T. Inc.
Toronto, ON · Greater Toronto Area, Canada
- Contract
Position: Software Developer - Full Stack – Senior
Added 1 hour ago
F
Staff Frontend Engineer
Forma.ai
Toronto, ON
- Full-time
Improve frontend performance, reliability, accessibility, testing strategy, and developer experience at a systems level.
Added 1 hour ago
Application Developer
Sobeys Capital Incorporated or a Franchise/Affiliate / ou une franchise/société affiliée
Dartmouth, NS · Stellarton, NS · Mississauga, ON
…have a Full-Time opportunity for a Salesforce Marketing Cloud Developer. This role can be based out of one our main offices including: Mississauga, ON; Stellarton, Dartmouth, Halifax…

Citi

Lead Data Scientist / VP

Mississauga, ON, Canada

$111,600.00 - $161,600.00 · Full-time

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Job details

Pay: $111,600.00 - $161,600.00
Job type: Full-time
Apply by: Nov 8, 2026
Experience: 6+ Years of experience in Engineering or HR Technology.
Posting language: English
Posted: Oct 30, 2026

Original job description

The Lead Data Scientist will work hands-on across the AI and analytics development lifecycle. The role will design analytical approaches, develop and validate models, build Generative AI and agentic workflows, and partner with data engineers and technology teams to implement scalable production solutions.

The successful candidate will combine strong data-science expertise with practical engineering skills, enterprise implementation experience, and an understanding of governance requirements. The role will also provide technical guidance to other data scientists and help establish reusable methods, coding standards, and implementation practices.

Key Responsibilities

Advanced Analytics and Statistical Modeling

Design and implement statistical analyses, predictive models, machine-learning solutions, and analytical frameworks.
Translate workforce and organizational questions into measurable hypotheses, appropriate methodologies, and actionable insights.
Apply techniques such as regression, classification, clustering, survival analysis, forecasting, experimentation, and causal inference.
Perform feature engineering, variable selection, model tuning, validation, sensitivity testing, and performance evaluation.
Apply explainability methods such as SHAP, feature attribution, and scenario analysis.
Clearly document and communicate analytical assumptions, limitations, findings, and business implications.

Generative AI and Agentic Solutions

Design and build Generative AI applications, Retrieval-Augmented Generation solutions, and agentic workflows.
Implement tool calling, workflow orchestration, structured outputs, multi-turn interactions, and state management.
Integrate foundation models through approved enterprise gateways and cloud platforms.
Develop reusable prompts, agents, tools, evaluation components, and analytical services.
Build evaluation frameworks to measure accuracy, groundedness, retrieval quality, task completion, consistency, and hallucination risk.
Test and optimize solutions for reliability, performance, latency, cost, and user experience.

Data Engineering and Solution Implementation

Partner with data engineers and architects to design data pipelines, analytical datasets, feature-generation processes, APIs, and production integrations.
Develop clean, reusable, and well-documented Python and SQL code for analytical and AI solutions.
Work with structured and unstructured data from multiple enterprise sources.
Implement data-quality checks, logging, monitoring, error handling, and traceability within analytical workflows.
Support the development of feature libraries, embedding pipelines, vector-search capabilities, and model services.
Move prototypes into scalable production solutions using established MLOps and LLMOps practices.

Governance and Responsible AI

Ensure solutions comply with applicable Model Risk Management, privacy, cybersecurity, data-governance, and responsible AI requirements.
Implement appropriate access controls, data entitlements, PII protections, cohort-suppression rules, and analytical safeguards.
Conduct model-performance, explainability, bias, fairness, stability, and outcome testing.
Support controls for prompt-injection detection, approved tool use, source grounding, and model-output validation.
Prepare documentation covering methodologies, data dependencies, testing, limitations, controls, and implementation decisions.
Partner with risk and control functions to address findings and support required reviews.

Technical Leadership and Collaboration

Serve as a technical lead for complex data-science and AI initiatives while remaining a hands-on individual contributor.
Provide technical guidance and peer review to data scientists working on related solutions.
Help establish standards for coding, analytical design, model validation, testing, documentation, and deployment.
Partner with product managers, data engineers, architects, technology teams, and business stakeholders throughout implementation.
Present complex technical concepts and analytical results in clear language for business and senior stakeholders.
Contribute to delivery planning, solution design, technical decision-making, and resolution of implementation issues.

Qualifications and Required Skills

Experience

Typically, six or more years of relevant experience in data science, machine learning, statistical modeling, advanced analytics, AI implementation, or a related field.
Demonstrated experience implementing analytical, machine-learning, or AI solutions in an enterprise environment.
Experience moving solutions from research and prototyping through validation, production deployment, and monitoring.
Ability to lead complex technical work independently and collaborate effectively across multidisciplinary teams.
Experience operating within a regulated environment is beneficial.

Technical Expertise

Strong knowledge of statistical modeling, probability, regression, classification, clustering, forecasting, experimentation, and model validation.
Advanced proficiency in Python and libraries such as Pandas, NumPy, SciPy, Scikit-learn, Statsmodels, PyTorch, or TensorFlow.
Strong SQL skills and experience with data extraction, transformation, analytical cohort development, and data-quality testing.
Experience designing or implementing Generative AI, Retrieval-Augmented Generation, tool-calling, or agentic applications.
Familiarity with frameworks such as Google Agent Development Kit, LangGraph, LangChain, CrewAI, or comparable technologies.
Experience integrating foundation models through enterprise AI platforms such as Google Cloud and Vertex AI, Microsoft Azure, or AWS.
Understanding of APIs, data pipelines, vector embeddings, semantic search, and production integration patterns.
Familiarity with MLOps or LLMOps practices, including versioning, testing, deployment, observability, monitoring, and change management.
Knowledge of responsible AI, model explainability, bias and fairness testing, data privacy, and role-based access controls.

Beneficial Experience

Experience in People Analytics, Workforce Planning, Human Capital Management, organizational effectiveness, or financial-services analytics.
Experience working with sensitive workforce data and governed analytical environments.
Familiarity with enterprise software-development practices, source control, automated testing, and CI/CD.
Strong written and verbal communication skills, including the ability to explain technical methods to non-technical audiences.

Education

Master’s degree or Ph.D. in Data Science, Statistics, Mathematics, Computer Science, Engineering, Economics, Operations Research, or another quantitative discipline.
A bachelor’s degree with substantial relevant technical and implementation experience may also be considered.

Master's degree in Analytics, Data Science, Computer Science.

6+ Years of experience in Engineering or HR Technology.

Experience with Python and JavaScript

AI Automation.

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Job Family Group:

Decision Management

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Job Family:

Specialized Analytics (Data Science/Computational Statistics)

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Time Type:

Full time

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Primary Location Full Time Salary Range:

$111,600.00 - $161,600.00

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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Automated Processing and AI

We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

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This job opening is for an existing job vacancy.

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.

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More about this job

Responsibilities

The Lead Data Scientist will design and implement advanced analytical models, Generative AI solutions, and agentic workflows while partnering with engineering teams for production deployment. The role also involves providing technical leadership, establishing coding standards, and ensuring compliance with governance and responsible AI requirements.

Requirements

Candidates must have six or more years of experience in data science, machine learning, or AI implementation within an enterprise environment. A Master’s degree or Ph.D. in a quantitative discipline is required, along with advanced proficiency in Python, SQL, and modern AI frameworks.

Skills

Python
SQL
Machine Learning
Statistical Modeling
Generative AI
Retrieval-Augmented Generation
Agentic Workflows
Data Engineering
MLOps
LLMOps
Predictive Modeling
Data Governance
Cloud Platforms
Model Validation
Feature Engineering
Technical Leadership

Visa sponsorship

Not detected in the job text

Keywords

Data Science
Machine Learning
Generative AI
Python
SQL
Statistical Modeling
Retrieval-Augmented Generation
Agentic Workflows
MLOps
LLMOps
Data Engineering
Cloud Platforms
Vertex AI
LangChain
LangGraph
PyTorch
TensorFlow
Pandas
NumPy
SciPy
Scikit-learn
Statsmodels
Model Risk Management
Responsible AI
Data Governance
Predictive Analytics
Feature Engineering
Vector Search
CI/CD
People Analytics

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