At Index Exchange, we’re reinventing how digital advertising works—at scale. As a global advertising supply‑side platform, we empower the world’s leading media owners and marketers to thrive in a programmatic, privacy‑first ecosystem.We’re a proud industry pioneer with over 20 years of experience accelerating the ad technology evolution. Our proprietary tech is trusted by some of the world’s largest brands and media owners and plays a crucial role in keeping the internet open, accessible, and largely free.We process more than 550 billion real‑time auctions every day (in comparison, Google processes 8.5 billion searches per day) with ultra‑low latency. Our platform is vertically integrated from servers to networks and runs primarily on our own metal and cloud infrastructure. This end‑to‑end infrastructure is designed to provide both stability and agility, enabling us to adapt quickly as the market evolves.At the core of it all is our engineering‑first culture. Our engineers tackle internet‑scale problems across tight‑knit, global teams. From moving petabytes of data and optimizing with AI to making real‑time infrastructure decisions, Indexers have the agency and influence to shape the future of advertising. We move fast, build thoughtfully, and stay grounded in our core values.About The Role We’re looking for a Senior Data Scientist who can bring their depth and breadth of experience in applied data science and optimization at industry scale to help guide our Index‑wide technology strategy for machine learning and optimization, and to drive pragmatic execution and iterative improvement of the same.What We’re Looking ForLearn and understand the business vision and market opportunity for the companyWork backwards from business problems to generate scientific hypotheses to guide development focus and pragmatismUse analytical, statistical and database skills to understand large, complex datasets with the aim to increase the programmatic efficiencyDesign, develop, and drive implementation of complex data‑centric solutions, including large data set segmentation, transformation, and feature generationClearly articulate research and development hypothesis, decisions and resultsTake part in the process of designing, developing & improving algorithms for automated decision making around programmatic exchange optimisationTake active part in designing, and driving implementation production performance monitoring frameworks and KPIsWork together with ML engineers and architects to develop production grade data centric solutionsBring an entrepreneurial spirit and innovative ideas to address the problems at handHere’s What You NeedBachelors or Masters in Mathematics, Computer Science, Engineering, or equivalent5+ years of experience in data science or machine learning environments that require the combined application of statistical & technical skillsExperience in data science practices in operational environments and internet scale, i.e. this is an applied position, rather than a solely research focused oneStrong statistical and research skills with a track record of using a variety of statistical methods (especially classification/prediction and time series models)Proven ability to demonstrate and articulate complex results to a wide technological audienceDemonstrated history of enabling advanced data modeling based guidance for technology developmentliExperience in cross‑functional team cooperation to drive pragmatic technological solutionsExpert in pragmatic application of data science and optimization best practices at large scale (industry scale platform experience preferred)Excellent development skills (Python required, specifically pandas, numpy, SciKit; knowledge in Scala a plus)Familiarity with digital marketing, advertising or analytics is a plusWork experience in complex system engineering environments is a plusWhy You’ll Love Working HereComprehensive health, dental, and vision plans for you and your dependentsPaid time off, health days, and personal obligation days plus flexible work schedulesCompetitive retirement matching plansEquity packagesGenerous parental leave available to birthing, non‑birthing, and adoptive parentsAnnual well‑being allowance plus fitness discounts and group wellness activitiesCommuter benefits and discounts, where availableEmployee assistance programMental health first aid program that provides an in‑the‑moment point of contact and reassuranceOne day of volunteer time off per year and a donation‑matching programBi‑weekly town halls and regular community‑led team eventsMultiple resources and programming to support continuous learningA workplace that supports a diverse, equitable, and inclusive environment – learn more hereEqual Employment Opportunity At Index Exchange, we believe that successful products are built by teams just as diverse as the audience who uses them. As such, we are committed to equal employment opportunities. We celebrate diversity of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or expression, or veteran status. Additionally, we realize that diversity is deeper than any status or classification—diversity is the human experience. For those who show grit, passion, and humility—Index will welcome you.Accessibility for Applicants with Disabilities Index Exchange welcomes and encourages individuals with disabilities to apply to work with us. If you require an accommodation, please share the details of your request and any information how we can assist you with the hiring recruiter when they contact you. Index Exchange will make reasonable efforts to ensure accommodation requests are met throughout the recruitment process.Index Everywhere, Index Anywhere Our corporate headquarters are in Toronto, with major offices in New York, Montreal, Kitchener, London, San Francisco, and many other global cities. As a major global advertising exchange, we are committed to operating as a tightly knit global team and embracing and empowering talent wherever our colleagues may be.#LI-ONSITE#J-18808-Ljbffr