Lead Data Scientist

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! Why this role? We're building the foundational infrastructure that will define how the world thinks about and deploys AI, and we want the sharpest, most curious people to help us do it. As a Lead Data Scientist on our Analytics and Data Insights team, you'll tackle problems that don't have textbook answers yet; shaping go-to-market strategy for technology that's still being invented, designing the experiments that prove or kill our biggest bets, and helping enterprises understand what foundational AI actually means for their bottom line. You'll own the full analytical lifecycle, from framing the right questions and building the models, to leading a team that delivers answers leadership can act on. As a Lead Data Scientist, you will: Drive the mission forward. Own the science: design and lead experimentation programs including A/B tests, multi-armed bandits, causal inference studies, that directly map to product and go-to-market decisions. Build predictive models that matter: develop and deploy models for forecasting, segmentation, propensity scoring, and opportunity sizing across Cohere's core business lines. Lead and grow a team: manage a team of analysts and data scientists. Set the technical bar, mentor aggressively, and create an environment where exceptional people do their best work. Act like an owner: no waiting around. You'll define analytical priorities, allocate resources, and push initiatives from question to production. Shape strategy: partner across product, research, sales, and finance to define how Cohere grows. Your team's work will get built into products and implemented into strategy. You may be a good fit, if you have: Strong command of SQL, Python, and Git, alongside deep expertise in statistical inference, experimental design, and predictive modeling A proven ability to turn ambiguous business questions into rigorous analytical problems, with clear and compelling recommendations to match Experience leading analytics or data science teams, with a track record of making smart people faster Familiarity with modern data stack tools such as BigQuery, dbt, Looker, or Airflow (nice to have, not essential) Genuine excitement about AI - you follow the research, have opinions, and enjoy being in the weeds Comfort operating in ambiguity, managing complex multi-workstream roadmaps, and distilling insights into a concise, actionable narrative A leadership style grounded in empathy as much as in data Full-Time Employees at Cohere enjoy these Perks: A weekly lunch stipend of $75/£75 or equivalent in your local currency for lunch. Full health and dental benefits, including a separate budget for mental health. RRSP matching, 401K, Pension Scheme. 100% Parental Leave top-up for up to 6 months, for either parent. Annual enrichment benefits: Arts & culture, fitness/wellness, quality time, and a workspace improvement credit. Education & learning stipend for conferences, courses, and coaching. 6 weeks of paid vacation (30 working days!) Budget for traveling to other offices if you are remote, plus an annual company offsite. How and Where We Work: Cohere is remote-friendly, but we also have offices in Toronto, London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul with more opening soon. For those in the office: a daily lunch program, plenty of snacks, and regular community and social events. For those not near an office: a co-working benefit so you can work alongside others in your city. Everyone receives a $500 home office stipend to set up your workspace properly. If any of the above doesn’t line up exactly with your experience, we still encourage you to apply. We strive to create an inclusive work environment for all; we welcome applicants from all backgrounds and are committed to providing equal opportunities. Should you require any accommodations during the recruitment process, please submit an Accommodations Request Form, and we will work together to meet your needs. We may use AI-enabled tools to screen and assess applicants against the criteria for this position. This helps our recruiters identify potentially qualified candidates, but it doesn't limit the applications our recruiters may review or consider. Beware of Scams: Cohere will never ask for payment or third-party services (e.g., CV writing) as part of our hiring process. All legitimate roles are listed on the Cohere careers page and LinkedIn only, with all communications from Cohere employees coming from an @cohere.com or @cw.cohere email alias. If jobs are viewed on other sites then please verify these through our official careers page.

The Lead Data Scientist will own the science by designing and leading experimentation programs like A/B tests and causal inference studies that inform product and go-to-market decisions. They will also build and deploy predictive models for business forecasting and lead and mentor a team of analysts and data scientists.

Candidates should possess a strong command of SQL, Python, and Git, coupled with deep expertise in statistical inference, experimental design, and predictive modeling. A proven ability to translate ambiguous business questions into rigorous analytical problems and experience leading data science teams are essential.

• Open and inclusive culture and work environment • Work closely with a team on the cutting edge of AI research • Weekly lunch stipend • In-office lunches & snacks • Full health and dental benefits • Separate budget to take care of your mental health • 100% Parental Leave top-up for up to 6 months • Personal enrichment benefits towards arts and culture • Personal enrichment benefits towards fitness and well-being • Personal enrichment benefits towards quality time • Personal enrichment benefits towards workspace improvement • Remote-flexible • Co-working stipend • 6 weeks of vacation (30 working days)

• SQLPreferred
• GitPreferred
• PythonPreferred

Identified from the job description. Confirm important requirements above.

• SQL
• Python
• Git
• Statistical Inference
• Experimental Design
• Predictive Modeling
• A/B Tests
• Multi-Armed Bandits
• Causal Inference
• Forecasting
• Segmentation
• Propensity Scoring
• Opportunity Sizing
• Team Leadership
• Analytical Prioritization
• Resource Allocation

• Data & Analytics
• Science & Research
• Management & Leadership
• Software
• Engineering

Minimum experience

5+ years

Posting language

English

Working hours

40 hours per week

Location requirements

Country, Canada, United States