Supply Chain Planning Manager, Demand Planning

Niagara Water•Diamond Bar, CA

About The Position

The Demand Planning Manager leads the monthly demand planning and CPFR/S&OP operating rhythms for an assigned portfolio and is accountable for strategic, business-aligned forecasting. The role translates data into business insight, aligns internal and external stakeholders around shared assumptions, and drives actions to improve forecast accuracy, reduce bias, strengthen the demand signal, and increase stakeholder confidence. The Manager leads through the team rather than acting as the primary day-to-day forecaster, ensuring analysts execute disciplined forecasting, system maintenance, reporting, and process standards. The role also oversees sales forecast reporting and goal setting. The Manager owns forecast governance, consensus planning, demand review preparation and execution, performance reporting, and stakeholder communications for the assigned portfolio. The role oversees analysts, sets standards, coaches performance, manages capacity and priorities, and maintains development and succession plans. It also ensures accurate use of Logility and connected forecasting data, establishes consistent planning processes, and partners with technology and process teams on automation, reporting, and planning-system improvements. This job description is not designed to contain a comprehensive list of activities, duties, or responsibilities. Duties, responsibilities, and activities may change at any time with or without prior notice.

Requirements

Bachelor’s degree in Supply Chain, Business, Economics, Engineering, Mathematics, Analytics, or a related field.
Six years of experience in demand planning, forecasting, S&OP, supply chain planning, analytics, or a similar manufacturing environment.
Four years of experience leading people, projects, or cross-functional planning processes.
Demonstrated experience facilitating cross-functional planning reviews and communicating forecast risks, assumptions, and recommendations.
Strong command of statistical forecasting, forecast accuracy and bias, forecast change analysis, consensus planning, and tactical and strategic forecast processes.
Advanced Microsoft Excel and reporting capability.
Working knowledge of ERP and supply chain planning platforms such as Logility, JDA, Oracle ASCP, or similar tools.
Ability to set expectations, delegate, coach performance, follow through on commitments, and address performance gaps constructively.
Ability to communicate concisely and appropriately for different audiences, connecting data with business impact, decisions, and actions.
Ability to build relationships, challenge assumptions productively, negotiate trade-offs, and gain alignment.
Ability to synthesize complex information, identify root causes and anomalies, distinguish demand from execution issues, and convert analysis into action.
Ability to create repeatable standards, clarify roles and deadlines, monitor adherence, and improve process maturity and scalability.
Ability to lead change by communicating a clear future state, organizing resources, managing resistance, and maintaining standards and accountability.

Nice To Haves

Ten or more years of experience in demand planning, forecasting, S&OP, supply chain planning, analytics, or a similar manufacturing environment.
Six or more years of people or project leadership experience.
Master’s degree in Supply Chain, Business, Economics, Engineering, Mathematics, Analytics, or a related field.
Lean Six Sigma or comparable continuous improvement certification.

Responsibilities

Lead the monthly demand planning cycle and ensure tactical and strategic forecasts reflect the best available customer, market, statistical, sales, and operational inputs.
Own forecast governance for the assigned portfolio, documenting assumptions, forecast changes and their reasons, risks, opportunities, and required stakeholder decisions.
Drive a consensus forecast by challenging inputs, reconciling conflicting views, and securing alignment across customers, Sales, Business Execution, S&OP, Finance, FG Planning, RM Planning, and other partners.
Maintain an unconstrained, business-aligned demand perspective while identifying and escalating supply or capacity constraints through the appropriate planning process.
Ensure forecast publication is timely, accurate, complete, and communicated to required downstream stakeholders.
Lead CPFR/S&OP and demand review preparation and execution, including objectives, agendas, pre-reads, decisions, and action logs.
Ensure meeting content is concise, decision-oriented, and supported by a clear narrative; use pre-meetings and stakeholder outreach to resolve questions and prepare decision-makers.
Build working relationships with customer, Sales, Business Execution, Planning, Finance, and leadership partners, and follow up on late or incomplete inputs, decisions, or actions.
Escalate material risks, unresolved decisions, missed commitments, and late or inaccurate customer inputs in time to protect forecast publication and downstream planning.
Own monthly and weekly portfolio performance reporting, including forecast accuracy, bias, forecast attainment, forecast change, and other agreed demand planning KPIs.
Identify and communicate high-impact forecast improvement opportunities, root causes, corrective actions, owners, and due dates.
Explain forecast changes, misses, assumptions, and risks using data-backed insights tailored to customer, functional, and leadership audiences.
Create consistent, standardized reporting and communication across customers and brands so stakeholders use the same data, definitions, and assumptions.
Monitor action closure and verify corrective actions improve performance.
Set analyst standards for forecast quality, system maintenance, process adherence, meeting preparation, communication, and stakeholder follow-through.
Coach analysts to turn data into actionable insight, communicate confidently, facilitate demand discussions, and escalate issues with recommendations.
Hold the team accountable for timely execution, accurate work, documented assumptions, clean system inputs, and completion of agreed actions.
Maintain individual development plans, conduct regular coaching, support engagement, assess capability and capacity, and build succession plans for critical responsibilities.
Delegate daily forecasting and routine system activities to appropriate analyst levels while maintaining managerial oversight, validation, and accountability.
Balance workload and priorities across the team and raise resource or capability risks with mitigation plans.
Ensure Logility and connected forecasting data are maintained accurately so the demand signal flows consistently into reports and downstream planning systems.
Validate analyst adherence to statistical model, parameter, item, organization, default, and data-maintenance standards; establish recurring controls to identify anomalies and prevent rogue or misplaced forecasts.
Drive standard work across customers and brands, including planning calendars, deadlines, templates, agendas, pre-reads, forecast change reporting, and action tracking.
Identify process or system gaps, define countermeasures, assign ownership, and sustain improvements through measurable controls.
Partner with technology and process teams to improve automation, self-service reporting, planning-system capability, and scalability.

Benefits

Paid time off for holidays, sick time, and vacation time
Paid parental and caregiver leaves
Medical coverage, including virtual care options
Dental insurance
Vision insurance
401(k) with company match
Health Savings Account with company match
Flexible Spending Accounts
Expanded mental wellbeing benefits, including free counseling sessions for team members and household family members
Family Building Benefits, including enhanced fertility benefits for IVF and fertility preservation, plus adoption, surrogacy, and Doula reimbursements
Income protection, including Life and AD&D, short- and long-term disability, critical illness, and accident plans
Special discount programs, including pet plans, pre-paid legal services, identity theft, car rental, airport parking, and more
Tuition reimbursement
College savings plan and scholarship opportunities