Data Scientist - Media , Cossette Media

pluscompany; Toronto; On-site; CAD 90,000 - 110,000; Full time

Benefits offered by this job

Hybrid work models

Flexible hours

Generous vacation (3 weeks + 1)

Job summary

Cossette Media in Canada seeks an experienced data analytics professional to lead Marketing Mix Modeling, predictive analytics, and performance measurement. You will bridge advanced econometrics with client delivery, partnering with Measurement Directors, Insights Analysts, and Data Architects.

You will serve as the technical engine of our Measurement practice, shaping dashboards and reports for business growth while collaborating across cross-functional teams in a dynamic agency environment.

Qualifications

• 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 and comfort in a fast-paced environment.
• Demonstrated skills in communication, prompting, and programming.
• Experience in media agencies, martech consulting, or enterprise client analytics.
• Bilingualism (English/French) is an asset for Montreal-based candidates.

Responsibilities

• Act as the primary technical voice in client-facing presentations explaining complex econometric concepts, model outputs, and optimization recommendations.
• Serve as the core technical contact with our MMM model supplier, driving implementation, calibration, and intelligence using our 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 analytical frameworks, dashboards and reports.
• Collaborate with Data Architects to validate input data quality, harmonized data collection and cross-channel normalizations.
• Work with Project Managers to ensure timely ingestion, calibration, and report generation.

Skills

Data Science

Econometrics

Marketing Analytics

Communication

Programming

Bilingual English/French

Education

Bachelor’s or higher in Econometrics, Statistics, Data or Computer Science

Tools

Google Suite (NotebookLM, Looker, BigQuery, Workspace)

Job description

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 personalized therapist guided iCBT programs and live therapy, access to health clinicians 24/7, and a holistic array of other health and wellness resources to support you and your family.

• Dedicated play rooms for days you need to bring the kids and health and wellness rooms when you need a place to get grounded.

• A responsible sick & personal absence days policy designed so you don't have to worry the moment a personal obligation or emergency arises.
• Maternity leave top up program.

We’re humbled by the number of talented people who apply to work with us every day. And, we thank each and every one of you. Truly. We’ll reach out directly to those we’d like to meet for an interview.

To ensure a fair and consistent evaluation for all candidates, our interviewers are supported by an AI tool that securely takes notes during the conversation

Creating meaningful work means embracing different perspectives. We are an equal opportunity employer and do not discriminate based on age, colour, ability, national origin, race, religion, sex, or sexual orientation. Not only are these provisions protected by provincial and federal law, embracing difference is what makes Cossette Mediawhat it is—and we wouldn’t have it any other way. We pride ourselves on our inclusive and accessible workplace. If you need any accommodations during the interview process to make it work for you, let us know.

By joining Cossette Media, you become part of Plus Company, a unique partnership of forward‑thinking creative agencies. As a network, we unabashedly believe anything is possible. Why? Because possibility is what powers the big dreams and limitless drive of an entrepreneur. And entrepreneurial agencies are what we’re made of. A whole network of them.

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