The Demand Planning team at Entegris is seeking a Demand Planning Analyst to design, implement, and operate analytical solutions that improve forecast accuracy and drive data-driven decision-making. This role focuses on transforming demand planning capabilities by turning complex data into actionable insights to support business growth and supply chain resilience. Responsibilities: Develop and maintain statistical forecasting models to improve accuracy over an 18-month horizon using R, Python, and GCP. Manage forecast data and pricing within SAP IBP. Partner with Marketing to refine market demand models using internal and external data. Design and deploy machine learning solutions to automate planning processes. Analyze large datasets to identify trends and risks. Create dashboards and reports using Microsoft Power BI. Collaborate with cross-functional teams including Supply Chain, Commercial, and IT. Qualifications: Bachelor's or Master's degree in Statistics, Mathematics, Data Science, Computer Science, or a related quantitative field. Required experience includes 2+ years in Python development, 2+ years in time series forecasting (univariate, multivariate, ensemble models), 2+ years in database technologies (SQL), 1+ year in cloud computing (GCP, AWS, or Azure), and 2+ years in dashboard development (Power BI). Preferred qualifications include experience with machine learning, predictive analytics, and SAP IBP or similar advanced planning systems.
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Skills for this role
PythonRGoogle Cloud PlatformSAP IBPMachine LearningTime Series ForecastingSQLMicrosoft Power BIStatistical ModelingPredictive Analytics
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A focused preparation guide, built around this job’s responsibilities and requirements.
✦ AI-generated guide
Preparation suggestions, not the employer’s actual interview questions. Always check the original posting for current requirements.
01
Understand the role
What matters most
Statistical Forecasting Accuracy
The core mandate is to improve demand forecast accuracy over an 18-month horizon. You must demonstrate proficiency in univariate, multivariate, and ensemble modeling techniques using Python and R to deliver measurable improvements in planning effectiveness.
SAP IBP Data Management
You are responsible for owning and maintaining forecast data and pricing within SAP IBP. This requires ensuring high data integrity and alignment with business requirements, serving as the primary bridge between technical models and the enterprise planning system.
Cross-Functional Stakeholder Alignment
Success depends on partnering with Marketing, Supply Chain, and Commercial teams to refine demand models. You must translate complex analytical outputs into actionable insights that non-technical stakeholders can use for business decision-making.
Automation via Machine Learning
The role requires designing and deploying machine learning solutions to automate manual planning processes. You must focus on building scalable, robust, and maintainable analytical solutions within a cloud environment like GCP.
Likely challenges to think through
Bridging Technical Models and Business Reality
A common challenge is that sophisticated statistical models may not always align with market realities or commercial strategy. Prepare by demonstrating how you have previously adjusted technical outputs based on qualitative feedback from Marketing or Sales teams.
Managing Data Complexity in SAP IBP
Integrating custom Python/GCP-based models with a structured system like SAP IBP can be technically difficult. Prepare by discussing your experience with data mapping, ensuring consistency between external analytical environments and enterprise planning software.
Communicating Technical Insights to Non-Technical Users
You will need to present complex forecasting methodologies to diverse teams. Prepare by practicing how to explain the 'why' behind your model's predictions and how to use Power BI visualizations to simplify complex trends for business leaders.
03
Practice your answers
Technical practice
Time Series Forecasting Techniques
What to coverExplain the differences between univariate and multivariate forecasting models. Discuss when you would choose an ensemble approach over a single statistical model to improve forecast accuracy over an 18-month horizon.
Python for Analytical Solutions
What to coverDescribe your experience using Python libraries for data manipulation and statistical modeling. Provide an example of how you have automated a manual data processing task to improve operational efficiency.
Cloud-Based Data Pipelines
What to coverDiscuss your experience designing and deploying analytical solutions within a cloud environment like GCP. Explain how you ensure scalability and maintainability when building data pipelines for demand planning.
SQL and Data Management
What to coverHow do you approach data modeling and querying when working with large, complex datasets? Explain your process for ensuring data integrity when integrating internal and external data sources for demand models.
Machine Learning in Planning
What to coverDescribe a machine learning solution you have designed or deployed to automate a planning process. What metrics did you use to evaluate the success and business impact of the model?
Dashboarding and Visualization
What to coverHow do you translate complex analytical insights into actionable dashboards in Power BI for non-technical stakeholders? Suggestion: Focus on how you balance technical depth with the need for clear, decision-oriented visualizations.
SAP IBP Integration
What to coverIf you have experience with SAP IBP or similar planning systems, explain how you have managed forecast data and pricing information. If not, describe how you would approach learning a new enterprise planning system to ensure data alignment.
Handling Unstructured Data
What to coverThe role requires analyzing both structured and unstructured data. Provide an example of how you have incorporated unstructured data (e.g., market sentiment, qualitative feedback) into a quantitative forecasting model.
Behavioural practice
Cross-Functional Collaboration
What to coverDescribe a situation where you had to partner with Marketing or Supply Chain teams to refine a demand model. How did you reconcile conflicting inputs or priorities to reach a consensus?
Translating Technical Insights
What to coverGive an example of a time you presented a complex technical recommendation to a non-technical audience. How did you ensure your message was understood and led to a data-driven decision?
Managing Multiple Priorities
What to coverThis role involves managing multiple analytical projects in a fast-paced environment. Describe how you prioritize your tasks and maintain high-quality results when facing competing deadlines.
Continuous Improvement Mindset
What to coverTell me about a time you identified a flaw in an existing forecasting methodology or planning process. What steps did you take to evaluate and implement an improvement?
02
Sharpen your knowledge
Topics to prepare
Time Series Forecasting Methodologies
Review the theoretical differences and practical applications of univariate, multivariate, and ensemble forecasting models. Exercise: Compare the performance of an ARIMA model against a Random Forest regressor on a sample supply chain dataset to understand when to apply statistical versus machine learning approaches.
Supply Chain Demand Planning Lifecycle
Understand the integration of statistical forecasts with business inputs like pricing and marketing data. Exercise: Map out how an 18-month forecast horizon is adjusted by external market signals and internal constraints, focusing on how to maintain data integrity within a system like SAP IBP.
Skills to revise
Python for Predictive Analytics
Focus on libraries such as pandas, scikit-learn, and statsmodels for data manipulation and model deployment. Exercise: Build a script that cleans a raw demand dataset, performs feature engineering, and generates a forecast, ensuring the code is modular and scalable for a production environment.
SQL for Data Management
Practice complex querying and data modeling to support analytical solutions. Exercise: Write SQL queries to join disparate tables (e.g., historical sales, pricing, and inventory levels) to create a unified dataset suitable for training a forecasting model.
Power BI Dashboard Development
Develop skills in creating actionable visualizations that communicate complex trends to non-technical stakeholders. Exercise: Design a dashboard that tracks forecast accuracy metrics (e.g., MAPE or WMAPE) over time and allows users to filter by product category or region.
Cloud-Based Analytical Deployment
Gain familiarity with deploying analytical solutions in a cloud environment like GCP. Exercise: Practice containerizing a Python forecasting script using Docker and deploying it to a cloud environment to understand the basics of scalable, automated model execution.
04
Your preparation checklist
Prepare a Time Series Forecasting Case Study
Develop a brief presentation or code walkthrough demonstrating your experience with univariate, multivariate, and ensemble forecasting models. Highlight how you handled data cleaning, feature engineering, and model validation to improve accuracy over a specific planning horizon.
Demonstrate Cloud-Based Analytical Solutions
Prepare to discuss a project where you deployed a scalable analytical or machine learning solution in a cloud environment (GCP, AWS, or Azure). Focus on how you ensured the solution was robust, maintainable, and integrated with existing data pipelines.
Showcase Power BI Dashboarding Skills
Prepare examples of dashboards you have built that translate complex data into actionable business insights. Be ready to explain how you tailored these visualizations for non-technical stakeholders to support data-driven decision-making.
Formulate Questions on SAP IBP and Cross-Functional Collaboration
Prepare thoughtful questions regarding how the Demand Planning team currently integrates SAP IBP with Python-based models and how you would collaborate with Marketing and Supply Chain teams to refine market demand models using external data.
Availability last checked: 18 Oct 2026. Status can change after a check; confirm on the employer’s website. Report an issue · Our checking policy
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