Senior Assortment Planner | Temporary

Hilversum, reference 2026-00432

Job description

• Develop and influence seasonal assortment plans based on rolling sales, stock, and inventory forecasts across product categories, sports, and marketplace dimensions
• Build and manage product-driven Open-to-Buy (OTB) forecasts to support manufacturing decisions and in-season optimization
• Monitor business performance against plan on a weekly and monthly basis, identifying risks and opportunities and driving appropriate actions and escalations
• Analyze demand, sales, and inventory trends to optimize product health, capture consumer demand, and inform pricing and trading decisions
• Manage end-to-end inventory health across categories and marketplace units, ensuring alignment with overall marketplace performance
• Partner with cross-functional teams to communicate and advocate assortment strategies, ensuring alignment with broader business and marketplace goals
• Independently lead projects, prioritize multiple workstreams, and ensure timely and efficient delivery of outputs
• Develop and deliver short-term forecasts using inputs such as replenishment data, customer insights, promotional activity, and marketing plans
• Utilize statistical analysis and data-driven decision-making tools to validate seasonal plans and improve forecast reliability
• Analyze demand patterns and external market factors to support global forecasting and business planning
• Provide technical expertise, documentation, and guidance within the demand planning function, including mentoring where applicable

Requirements

• Minimum 5+ years of experience in assortment or retail planning, with strong knowledge of financial, product, and inventory planning
• A growth mindset with the ability to apply statistical forecasting, data science, and innovative approaches to planning
• Strong analytical and critical thinking skills, with the ability to interpret data and quantify gaps versus financial plans
• Proven ability to create clear, compelling, and data-driven communications that influence stakeholders
• Excellent problem-solving skills and ability to work independently in a fast-paced environment
• Demonstrated experience managing multiple workstreams and delivering results under pressure
• Strong stakeholder management skills and the ability to collaborate effectively across diverse teams
• Solid commercial acumen and understanding of how planning decisions impact business performance
• Proficiency in using data and analytics to drive decision-making and business outcomes

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