Data Scientist / Data Engineer

• Data Scientist / Data Engineer
• Location: Markham, ON

Onsite Flexibility: Hybrid — 3 days a week in office (anchor day: Wednesday)

• Contract Details
• Position Type: Contract
• Contract Duration: 6 months (with potential for extension and conversion to permanent)
• Pay Rate: C$85.00–C$100.00 / Hour (CAD)
• Shift / Schedule: Monday–Friday, core business hours; overtime as needed
• Travel Requirements: Not required

• Job Summary
• Reporting to the Senior Advanced Analytics Manager, the Data Scientist / Data Engineer will be conducting all analytical activities related to AML transaction monitoring systems. This role is best suited for someone with a blend of Data Engineering (60–70%) and Data Science (30–40%) skills. The focus is on Oracle migration, data quality, SQL/Python development, statistical analysis, and cross-functional collaboration, rather than machine learning. The team is supporting TD's migration from SAS-based systems to Oracle for AML/financial crime monitoring, and is looking for contractors to support this transformation project. Core Oracle migration and implementation work runs until April 2027, with interim monitoring work expected to be busiest until approximately October 2026, with ongoing support afterward. The hiring manager is looking for a full-stack data scientist who combines Data Science, Data Engineering, Data Quality, Data Exploration, and Statistical Analysis capabilities. The exact job title is not important — candidates can come from Data Scientist, Data Engineer, or Data Analyst backgrounds if they have the right experience. Fast learners with strong technical fundamentals and migration experience will be highly competitive.

• Key Responsibilities
• Work independently to provide analysis, design, and support of technical data management solutions on various projects ranging in complexity and size
• Conduct data quality checks on raw or curated data on Oracle and Azure platforms
• Conduct activities related to customer segmentation, scenario initial threshold setting, and model performance monitoring
• Help maintain a structured documentation process to demonstrate an effective scenario review program to satisfy audit, compliance, and regulatory requirements
• Execute quality control procedures to review end-to-end interim monitoring solutions, identify gaps, and support future-state implementation activities
• Work with various business teams to help identify areas for improvement and provide insights using supporting data and models to support business strategies
• Perform data quality validation, data cleansing, data stitching, and data integration
• Build data engineering capabilities for combining multiple data sources
• Support Oracle implementation (MVP 2) by validating data and preparing scenarios
• Conduct transaction segmentation and initial threshold setting for AML monitoring scenarios
• Monitor production performance, alert volumes, and suspicious transaction reports (STRs) after implementation
• Analyze impacts when unusual alert patterns occur
• Help develop and execute interim monitoring solutions while legacy systems are phased out
• Collaborate with technology, project managers, business teams, and data teams

• Required Skills
• Expert-level proficiency in Python and SQL
• Advanced knowledge of query optimization, debugging, and automation
• Strong data exploration and analysis skills, with experience working with large-scale datasets
• Ability to apply statistical techniques and data mining tools to solve business problems
• Strong knowledge of and experience with data-driven or data-centric projects
• Data engineering experience
• Data quality and data transformation
• Strong statistical knowledge (for segmentation and threshold setting)
• Ability to learn quickly in a changing environment
• Strong collaboration and communication skills, with the ability to engage cross-functional teams, discuss complex data issues, and present findings clearly
• Proven ability to work effectively within large, collaborative teams and contribute as a strong team player
• Excellent multi-tasking skills: ability to adapt to and manage changing priorities

• Preferred Skills
• Experience with SAS, Informatica, Tableau, and other relevant data analytics tools
• AML knowledge
• Oracle ECM experience (not expected because it's a niche platform)
• Azure data pipeline experience
• Informatica mapping knowledge
• Data migration experience (strongly preferred)
• Banking/financial services knowledge

• Education Requirements
• Master's degree in Computer Science or a related field is ideal; equivalent experience will be considered

• Required Experience
• 5+ years of overall experience
• 5 years of experience with Python
• 5 years of experience with SQL
• 5 years of experience applying statistical techniques and data mining tools to solve business problems
• 5 years of data exploration and wrangling experience
• 5 years of experience in query optimization, debugging, and automation
• 5 years of experience working in large, data-driven batch environments

• Nice-to-Have Experience
• 1+ year of AML experience
• Experience with Tableau
• Experience with SAS
• 1+ year of experience with Informatica
• Financial institution (FI) background

• Important Notes
• Interview Process: Single panel interview consisting of a Python coding test, SQL coding test, statistics questions, a case study, and a technical discussion with the hiring manager and team; conducted in person in Markham
• Machine learning model development is not part of this role at this time; ML knowledge is helpful but will not be used until Oracle implementation is complete
• The contractor will have access to customer data

• About the Client
• This client is a top 10 bank in Canada and North America operating across retail, commercial, wealth management, and wholesale banking, with a presence spanning thousands of locations across North America and serving millions of clients in today's evolving financial market. Employing tens of thousands of professionals across its network, the organization offers comprehensive financial solutions at scale. Teams include data scientists, data engineers, financial crime risk specialists, technology professionals, and analytics managers who collaborate across large, cross-functional programs to support regulatory compliance, AML monitoring, and enterprise transformation initiatives.

• About GTT
• GTT is a minority-owned staffing firm and a subsidiary of Chenega Corporation, a Native American-owned company in Alaska. We highly value diverse and inclusive workplaces and support Fortune 500 organizations across banking, financial services, technology, life sciences, biotech, utilities, and retail sectors throughout the U.S. and Canada.

Job Number: 26-08008 Industry: Data & Analytics

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