Data Scientist

Location: Montreal, QC or Toronto, ON (Hybrid)
Salary Range: $90,000 – $110,000 CAD
Position Type: Full-Time
Because working at Cossette Media means tapping into unparalleled creative energy. It means joining the agency that wins more new clients than anyone else and boasts the most enviable and exciting list of proprietary innovations in Canada. It means being surrounded by smart, passionate people with a burning passion for their work. It means accelerating your professional growth and feeling truly trusted. In short, working at Cossette Media means feeling like you're reaching another level.

About The Role

We are looking for an experienced, curious, and resourceful individual who loves data and analytics to join a team that works daily at the heart of business development and technological innovation.

This person will serve as the technical engine of our Measurement practice. In this key role, you will be the core subject matter expert leading the end-to-end execution of Marketing Mix Modeling (MMM), predictive analytics, and performance measurement. You will bridge advanced statistical modeling with strategic client delivery, working directly alongside client-facing Measurement Directors, Insights Analysts, and Data Architects.

Key Responsibilities

• Act as the primary technical voice in client-facing presentations, explaining complex econometric concepts, model outputs, and optimization recommendations in accessible business terms.
• Serve as the core technical contact with our MMM model supplier, driving the implementation, calibration, and intelligence using our advanced predictive tool, AIOS.
• Run and refine custom traditional Marketing Mix Models utilizing our Arima partner tool
• Evaluate and optimize parameters including paid, owned, 3rd party medias and macro factors
• Partner with Account Directors to translate client business questions into actionable analytical frameworks, executive-ready dashboards and performance reports.
• Collaborate daily with Data Architects to validate input data quality, harmonized data collection, taxonomies, and cross-channel normalizations prior to modeling.
• Work closely with Project Managers to streamline end-to-end measurement project schedules, ensuring timely ingestion, calibration, and report generation.

Qualifications & Key Competencies

• 3+ years experience in Data Science, Econometrics, or Quantitative Marketing Analytics
• Proven track record in Marketing Mix Modeling
• Knowledge of the Google suite such as NotebookLM, Looker, BigQuery, and Workspace
• Ability to articulate complex statistical methodologies clearly
• Natural problem-solving casting and comfortable in a fast-paced innovative environment.
• Demonstrated skills in communication, prompting, and programming.
• Bachelor’s+ in Econometrics, Statistics, Data or Computer Science, or similar discipline.
• Experience in media agencies, martech consulting, or enterprise client analytics.
• Bilingualism (English/French) is an essential asset for candidates based in Montreal.

What’s In It For You

We Value The ‘whole You’

• An innovative and entrepreneurial work environment that promotes ingenuity and individuality - with the best of colleagues, and the best of clients
• Hybrid work models and flexible hours, plus a work from anywhere policy for short-term stays in other regions
• Generous Vacation starting at 3 weeks + 1 extra week over the holidays
• Agency summer days (exact policy differs per campus and agency)
• Modern, open co-working spaces with coffee & snack bars, located in great city neighborhoods, close to shops and restaurants and easy access to public transport
• Dogs allowed, dedicated Play Room to support families and Private wellness room (in select offices)
• Team social events - holiday parties, seasonal gatherings, weekly happy hours, inspiring speakers and more

We are obsessed with learning and being better humans

• In-house learning & development sessions and annual career and growth conversations’
• Access to internal network of opportunities across all agencies
• Internal EDI group(s), programs & initiatives across Plus Company and opportunities to be involved in employee resource group(s)

Check out our EDI report here to learn more about our work and commitment towards equity.

We invest in your health and wellness:

• Flexible benefits to support your individual lifestyle and life stage – with access to a personal wellness spending account you can use for a wide range of wellness expenses, including gym membership fees, pet care, education expenses, and much more
• Comprehensive mental health support including access to a virtual mental health therapy clinic providing you with per