Supply Planning Manager

It's fun to work in a company where people truly BELIEVE in what they're doing! We're committed to bringing passion and customer focus to the business. Peter Millar was founded in 2001 with a single cashmere sweater offered in 24 colors. Based in Raleigh and Durham, North Carolina, the American lifestyle brand has grown to include luxury performance sportswear, seasonal resort and country club apparel, sophisticated classics, casually refined tailored clothing and sartorial accessories. We strive to capture timeless style upgraded with signature innovations, in designs that are in tune with modern life. We embrace working hard, being kind and doing right by our customers, aiming to set a higher standard for the apparel industry. The Supply Planning Manager is responsible for transforming demand forecasts into executable supply and purchasing strategies that optimize product availability, inventory investment, and financial performance. Operating at the center of cross-functional collaboration, the role partners closely with Demand Planning, Merchandising, Production, Operations, and manufacturing vendors. This individual owns end-to-end supply planning from budget planning, in year reforecasting, factory capacity planning through purchase order execution and fulfillment center receipt. They make key tradeoff decisions related to buy timing, order phasing, chase strategies, MOQs, lead times, and inventory targets to balance service levels, inventory productivity, and financial objectives. They are an active business parter with demand planning to achieve business operational objectives. The Supply Planning Manager also champions continuous improvement through process optimization, automation, analytics, and reporting. They must develop scalable planning capabilities that improve decision quality, operational efficiency, and business agility. The ideal candidate is a highly analytical, results-oriented supply chain professional with strong business acumen, exceptional problem-solving skills, and a passion for continuous improvement. They thrive in entrepreneurial environments, effectively navigate complexity and uncertainty, and leverage data, systems, and cross-functional relationships to drive informed decisions and operational excellence. ESSENTIAL FUNCTIONS Planning, S&OP, and Execution Own budget setting, in-season reforecasting, and inventory planning for assigned categories Build exception management tools and processes for forecast changes, inventory risk, and capacity constraints Drive proactive risk mitigation through resolution with internal partners Ensure plans meet capacity constraints, financial targets (OTB, inventory turns), and timing requirements (in DC / ex-factory). Monitor and drive  adherence to inventory KPIs including in-stock rates, turns, excess, and allocation efficiency Partner closely with Operations, Finance, and Supply Chain teams to align supply plans with business priorities Lead assigned areas of the S&OP supply review Independently develop clear summaries and recommendations that support timely, data-driven decision-making Capacity Planning Own the factory capacity planning process from mid-term strategic volume planning through purchasing execution Responsible to build and maintain capacity plans incorporating forecasts, OTB targets, and production constraints Align purchasing strategies with vendor capacity, lead times, and internal timelines Track readiness for launches, campaigns, and peak periods, proactively communicating risks, delays, or constraints Develop and enhance capacity planning tools and dashboards (Power BI, Excel). Purchasing & Buy Execution Leader Convert demand forecasts into executable purchase orders aligned to business and inventory targets. Manage tradeoffs (buy early, hold, phase, chase) based on demand signals, capacity, and financial impact. Ensure purchases stay aligned to OTB targets and time-phased buying plans. Partner with production teams on MOQs, lead times, and material availability to support execution. Collaborate with vendors and internal partners to ensure timely and accurate PO execution. Ensure strong alignment with essentials buyers to maintain factory capacity & inventory flow Support air/sea decision-making based on forecast changes, marketing needs, and cost implications. Process Improvement, Systems & Analytics Identify, prioritize, and implement process improvements that reduce lead times, increase flexibility, improve service levels, and minimize waste Design and implement tools, automation, and data flows to improve planning speed, accuracy, and decision quality Develop strong working knowledge of ERP, WMS, and planning systems to support scenario analysis and execution Create and maintain SOPs and work instructions for all assigned processes Participate in projects and key initiatives as business needs evolve COMPETENCIES Strong ownership and results-oriented mindset with a focus on continuous improvement Highly analytical, with the ability to synthesize complex and changing data into actionable insight Ability to make timely, data-driven decisions grounded in supply chain expertise Comfortable operating in environments with evolving systems, imperfect data, and shifting priorities Strong operational discipline, accountability, and follow-through Excellent communication, collaboration, and time management skills Continuous learner who adapts quickly to new tools, systems, and business needs Strong pattern recognition and innovation mindset, with a bias toward simplification and scalable solutions Proven ability to build clear, executive-ready reporting and visualizations DESIRED EDUCATION AND EXPERIENCE 7+ years of experience in purchasing, planning, inventory, supply, production, or supply/demand planning roles; consumer brand or retail experience preferred Bachelor’s degree in Supply Chain, Operations, Industrial Engineering, St