Principal Demand Planner

Job DescriptionPrimary Duties & ResponsibilitiesMaintain a consolidated demand plan and provide visibility to Sales, Operations, Manufacturing, and Supply Chain teams.Support the monthly S&OP process by preparing demand inputs, reviewing forecast changes, and highlighting risks and opportunities.Monitor forecast accuracy, demand variability, backlog, and planning performance using dashboards and KPIs.Analyze demand trends and identify demand risks, upside opportunities, and mitigation plans.Partner with Sales and Commercial teams to understand customer demand drivers and changing business priorities.Support capacity planning and product allocation decisions through data-driven demand analysis.Coordinate demand changes across manufacturing sites to improve demand-to-supply alignment.Prepare executive-ready reports, planning metrics, and demand review materials.Identify opportunities to improve planning processes, reporting, and data quality.Support implementation and adoption of planning tools, dashboards, and standard planning processes.Cross collaboration with functional stakeholders and suppliers across time zones.Monitor key supply and capacity constraints, proactive communication of impact to site planners and stakeholders, and support development of mitigation planning.Support product prioritization and allocation activities by preparing demand scenarios, analyzing trade-offs, and coordinating with cross-functional stakeholders.Education & ExperienceBachelor's degree: Supply Chain, Business, Engineering, Operations, or related field required.APICS/ASCM certification (CPIM, CSCP) or equivalent is a plus.Skills10+ years of experience in demand planning, supply chain planning, production planning, or related fields.Experience in manufacturing or semiconductor industry preferred.Experience supporting S&OP, demand reviews, or integrated business planning processes preferred.Demonstrated ability to work cross-functionally in a matrix organization.Experience with ERP systems and planning tools.Understanding of demand planning, forecasting, and supply chain planning principles.Strong analytical and problem-solving skills with advanced Excel; Power BI/Tableau preferred.Experience with ERP and demand planning systems.Strong communication and stakeholder management skills.Ability to manage multiple priorities in a fast-paced environment.Continuous improvement mindset with strong attention to detail.Self-motivated, collaborative, and accountable with strong follow-through.Safety RequirementsAll employees are required to follow the site EHS procedures and Coherent Corp. Corporate EHS standards.Quality and Environmental ResponsibilitiesDepending on location, this position may be responsible for the execution and maintenance of the ISO 9000, 9001, 14001 and/or other applicable standards that may apply to the relevant roles and responsibilities within the Quality Management System and Environmental Management System.Culture CommitmentEnsure adherence to company's values (ICARE) in all aspects of your position at Coherent Corp.:Integrity – Create an Environment of TrustCollaboration – Innovate Through the Sharing of IdeasAccountability – Own the Process and the OutcomeRespect – Recognize the Value in EveryoneEnthusiasm – Find a Sense of Purpose in WorkCoherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.If you need assistance or an accommodation due to a disability, you may contact us at View email address on click.appcast.io. Coherent