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Sun Life

Senior Data Scientist

Sun Life

Senior Data Scientist supporting Canadian business units at Sun Life. Focus on accelerating the growth and application of advanced analytics in driving value.

Posted 6/30/2026full-timeToronto • 🇨🇦 CanadaSenior💰 CA$90,000 - CA$140,000 per yearWebsite

Tech Stack

Tools & technologies
CloudMicroservicesPySparkPythonSQL

About the role

Key responsibilities & impact
  • Translate business goals into analytical problems; Identify optimal algorithms, statistical techniques and/or GenAI architecture suitable for the business problem at hand
  • Work in cross-functional teams to develop ML/data science products, including GenAI applications
  • Apply best-in-breed data science techniques including descriptive, predictive, and machine learning methods from design to implementation
  • Focus on feature engineering, model training, model evaluation, and prompt engineering for LLMs
  • Design, develop, and deploy GenAI solutions including AI agents, chatbots, and autonomous systems that solve complex business problems
  • Research and pilot the latest GenAI technologies, RAG (Retrieval-Augmented Generation) techniques, and agentic frameworks (LangChain, LangGraph, CrewAI etc.)
  • Implement AI bots/agents with advanced reasoning capabilities and tool use patterns
  • Work with vector databases and embedding models to build intelligent information retrieval systems
  • Break down broader data science development milestones into actionable goals, activities, and work plans
  • Create and maintain technical design artifacts describing application functionality, data models, interfaces, and integrations
  • Engage and negotiate with stakeholders, make business recommendations with effective presentations of findings at multiple levels of stakeholders
  • Champion continuous improvement and foster innovation within the analytics community.

Requirements

What you’ll need
  • Bachelor’s degree in computer science, Statistics, Mathematics, or related field, or equivalent experience
  • 5+ years experience in developing and implementing data science techniques
  • Proficient in Python for data science and GenAI application development
  • Experience with writing complex SQL and PySpark queries to extract and integrate data from multiple database sources
  • Proficiency in machine learning including supervised and unsupervised models
  • Demonstrated experience in data transformation, data manipulation, and working with structured vs. unstructured data
  • Strong understanding of APIs, microservices architecture, and cloud-native development
  • Hands-on expertise with GenAI frameworks and LLM APIs with experience developing AI bots/agents with reasoning and tool-use capabilities
  • Strong understanding of RAG techniques, prompt engineering, and fine-tuning methodologies and familiarity with vector databases and embedding models
  • Experience with chatbot development concepts and conversational AI design
  • Exceptional communication skills to articulate complex technical concepts to both technical and non-technical stakeholders
  • Effective and concise oral and written storytelling and insights communication skills
  • Ability to work on multiple projects in parallel while managing constantly changing deadlines and priorities
  • Proven ability to mentor and guide junior data scientists and data engineers
  • Strong problem-solving abilities and analytical skills with keen attention to detail.

Benefits

Comp & perks
  • Wellness programs that support the three pillars of your health – mental, physical, and financial
  • Flexible work arrangements
  • The opportunity to move along a variety of career paths with amazing networking potential.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
Data Science TechniquesFeature EngineeringModel TrainingModel EvaluationData TransformationData ManipulationAPIs UnderstandingMicroservices ArchitectureRAG TechniquesPrompt Engineering
Soft Skills
Exceptional Communication SkillsEffective StorytellingProblem-Solving AbilitiesAnalytical SkillsMentoring and Guiding