Advanced SQL and Data Manipulation
At the core of your technical evaluation is your ability to handle massive, high-volume datasets. Activision expects you to write highly optimized, complex SQL queries without hesitation. Interviewers will look for your ability to join multiple large tables, utilize window functions, and optimize queries for performance. Strong performance means writing clean, scalable code while proactively identifying edge cases in the data.
Be ready to go over:
- Complex Joins and Aggregations – Understanding how to merge massive behavioral datasets efficiently.
- Window Functions – Using ranking, lead/lag, and cumulative metrics to analyze player behavior over time.
- Data Cleaning and Anomaly Detection – Identifying and handling missing or skewed data before analysis.
- Advanced concepts (less common) – Query execution plans, database indexing, and optimizing for specific data warehouse architectures.
Example questions or scenarios:
- "Write a query to find the top 5% of players by ad engagement in the last 30 days, partitioned by game title."
- "How would you identify and handle duplicate or missing logging events in a massive user telemetry dataset?"
- "Given a table of daily user logins and ad impressions, calculate the 7-day rolling average of impressions per active user."
Statistical Analysis and A/B Testing
Because you will lead the design and analysis of experiments, your statistical foundation must be rock solid. You will be evaluated on your ability to apply statistical rigor to assess product and ad performance. A strong candidate will confidently discuss significance levels, statistical power, and the assumptions underlying regression models.
Be ready to go over:
- Experimental Design – Setting up A/B tests, determining sample sizes, and defining success metrics.
- Hypothesis Testing – Choosing the right test (e.g., t-tests, chi-square) and interpreting p-values and confidence intervals.
- Regression and Predictive Modeling – Applying linear or logistic regression to understand relationships between player behavior and ad revenue.
- Advanced concepts (less common) – Multi-armed bandit testing, causal inference, and handling network effects in experiments.
Example questions or scenarios:
- "Walk me through how you would design an A/B test to evaluate a new ad placement in a mobile game."
- "If an A/B test shows a significant increase in ad clicks but a decrease in day-7 retention, how do you formulate a recommendation?"
- "Explain the assumptions of linear regression and how you would check for them in a dataset."
Product Sense and Business Strategy
Activision Blizzard Media is focused on connecting advertisers with players. You must demonstrate a deep understanding of gaming and ad-tech ecosystems. Interviewers want to see how you translate data into actionable business strategies. Strong performance involves structuring ambiguous business questions, selecting the right KPIs, and balancing user experience with monetization.
Be ready to go over:
- Ad-Tech Metrics – Understanding eCPM, CTR, fill rates, and ROAS.
- Gaming Metrics – Analyzing DAU/MAU, session length, ARPDAU, and retention curves.
- Root Cause Analysis – Systematically diagnosing sudden drops or spikes in key metrics.
- Advanced concepts (less common) – Yield optimization strategies and ad inventory forecasting.
Example questions or scenarios:
- "Our overall ad revenue dropped by 10% yesterday despite steady DAU. How would you investigate this?"
- "How would you measure the cannibalization effect of introducing a new rewarded video ad on in-app purchases?"
- "What metrics would you look at to evaluate the health of a newly launched marketing campaign?"
Cross-Functional Communication and Leadership
As a Staff Data Analyst, your technical skills must be matched by your ability to lead and communicate. You will collaborate closely with Product Managers, Engineers, and Commercial leaders. Evaluators will assess your ability to translate complex statistical findings into clear, concise narratives. Strong candidates will demonstrate how they have previously influenced senior management and driven organizational change through data.
Be ready to go over:
- Stakeholder Management – Navigating competing priorities and pushing back when necessary.
- Data Storytelling – Presenting analytical findings to non-technical audiences using tools like Looker or Tableau.
- Documentation and Mentorship – Building clear methodologies and elevating the analytical culture of the team.
- Advanced concepts (less common) – Leading cross-functional task forces or driving the adoption of new analytical frameworks.
Example questions or scenarios:
- "Tell me about a time you had to explain a complex statistical concept to a non-technical executive."
- "Describe a situation where your data insights contradicted the product team's intuition. How did you handle it?"
- "How do you ensure your analytical findings are actually implemented by the engineering or commercial teams?"