Senior Data Scientist III

📋 Description

• • Own the full lifecycle of data-driven optimization for one of the world’s largest programmatic ad exchanges, processing hundreds of billions of ad requests and petabytes of fresh data every single day.
• • Identify, quantify, and prioritize the highest-impact levers for yield improvement across publisher inventory and buyer efficiency—turning raw, high-velocity data into clear, actionable roadmaps that move core business KPIs.
• • Design, launch, and analyze rigorous A/B, multivariate, and switchback experiments at scale; build automated monitoring and alerting so that statistically significant uplifts (or degradations) are surfaced to stakeholders within minutes, not days.
• • Partner daily with Product, Engineering, Marketplace Operations, and Executive leadership to translate complex statistical findings into crisp narratives that influence roadmap decisions, budget allocations, and long-term strategy.
• • Build and maintain production-grade Python and SQL pipelines on Google Cloud Platform (BigQuery, Dataflow, Composer) that transform chaotic log-level data into clean, reliable, analysis-ready datasets—then push the boundaries of what “analysis-ready” means for petabyte-scale problems.
• • Develop predictive models and causal-inference frameworks that forecast auction dynamics, detect anomalous supply or demand patterns, and recommend real-time pricing or traffic-shaping actions that can shift millions of dollars in revenue.
• • Champion a culture of evidence-based decision making by mentoring junior analysts, leading internal “lunch-and-learns,” and publishing reproducible notebooks that become the canonical reference for how we understand our marketplace.
• • Drive automation initiatives that eliminate manual toil—turning yesterday’s ad-hoc investigations into tomorrow’s self-service dashboards, alerting systems, and machine-learning micro-services.
• • Stay relentlessly curious about the digital advertising ecosystem (DSP behaviors, SSP auction mechanics, header bidding, privacy regulations) and translate external market shifts into internal experimentation hypotheses.
• • Uphold OpenX’s core values—We Are One, Customer Centric, OpenX Is Ours, We Are an Open Book, We Evolve Fast—by giving and receiving candid feedback, taking ownership of outcomes, and iterating faster than the industry around us.