Senior Data Scientist at Copolyai
Ottawa, ON, Canada -
Full Time


Start Date

Immediate

Expiry Date

03 Dec, 25

Salary

70000.0

Posted On

04 Sep, 25

Experience

0 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

No

Skills

Good communication skills

Industry

Information Technology/IT

Description

We’re seeking a Senior Data Scientist to lead the development of advanced AI solutions that power deep research, scientific reasoning, and strategic decision-making. You’ll work with large language models (LLMs), retrieval-augmented generation (RAG) systems, and Graph-RAG architectures to create intelligent tools that extract and synthesize insights from complex, unstructured data.
This role is ideal for someone who thrives at the intersection of machine learning, knowledge representation, and real-world impact, and who is excited to help shape the future of how research is conducted in global health, legal, scientific, and financial domains.

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Responsibilities
  • Design and develop LLM-powered applications for tasks such as document analysis, summarization, knowledge extraction, and reasoning.
  • Build and optimize RAG pipelines with custom retrieval logic, vector databases, and hybrid search strategies.
  • Implement and integrate knowledge graphs into AI systems for enhanced explainability and structured reasoning (Graph-RAG).
  • Own the full pipeline from data ingestion and preprocessing (e.g., PDFs, scientific papers, grant documents) to model deployment.
  • Collaborate with engineers and domain experts to define requirements, evaluate outputs, and iterate rapidly.
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