Production Planning Manager

Marmon Holdings•Manchester, NH

About The Position

As a part of the global industrial organization Marmon Holdings—which is backed by Berkshire Hathaway— you’ll be doing things that matter, leading at every level, and winning a better way. We’re committed to making a positive impact on the world, providing you with diverse learning and working opportunities, and fostering a culture where everyone’s empowered to be their best. As a part of the global industrial organization Marmon Holdings—which is backed by Berkshire Hathaway—you’ll be doing things that matter, leading at every level, and winning a better way. We’re committed to making a positive impact on the world, providing you with diverse learning and working opportunities, and fostering a culture where everyone’s empowered to be their best. The Planning Manager is responsible for building and leading a scalable, data-driven planning function that ensures backlog execution, production alignment, shipment forecasting, and operational readiness across a across a high mix manufacturing environment defined by high product complexity, low volume runs, frequent changeovers, and elevated scrap risk in our Manchester and Hooksett facilities. This role owns planning system maturity, capacity modeling, ERP discipline, backlog segmentation, and cross-functional execution alignment to enable on-time delivery, working capital control, and sustainable growth. The Planning Manager installs and maintains structure, visibility, and accountability into the planning process while executing proactively, and ensuring planning sophistication scales ahead of business growth and demand volatility.

Requirements

Bachelor’s Degree in Supply Chain, Operations, Business Management, Industrial Engineering, or related field
7+ years of manufacturing planning experience
Experience supporting ERP implementation and/or advanced planning systems preferred
Advanced data-driven decision-making, systems-level thinking, and problem-solving capability.
Advanced Excel capability (including complex formulas, Power Query, and data modeling) required; experience transitioning Excel-based processes into ERP/system-based workflows preferred.
Demonstrated experience in capacity modeling and production planning
Demonstrated in-depth knowledge of ERP planning architecture, including master data structure, routing logic, BOM integrity, capacity parameters, and end-to-end information flow.
Success with continuous improvements in ERP process flow from order entry through shipment confirmation.
Proven ability to lead and develop teams
Experience in high-mix manufacturing environment required
Strong communication and presentation skills
Ability to translate data into operational decisions
Project leadership experience (ERP, systems, or process implementation)
Attention to details and accuracy
Must be able to effectively communicate with co-workers and other department personnel where English is second language.
Must be able to read, write, understand, and communicate in English
Ability to stand and move around production facility for extended period of time if needed
Ability to sit at a desk and conduct computer work for extended periods of time if needed.
Ability to wear Safety attire or protective gear on a daily basis.
Ability to bend, move between equipment, and aisles of product
Ability to travel occasionally, < 20%, to other business units

Nice To Haves

LEAN Green Belt preferred
AS9100 training preferred

Responsibilities

Backlog Execution & On Time Delivery (OTD) Ownership
Own structured, transparent visibility to total backlog and capacity constraints
Accountable for accurate and achievable monthly shipment forecasts
Lead backlog segmentation and prioritization strategy based on cross functional alignment on key customers, products, and other strategic initiatives
Develop and maintain finite capacity modeling to support lead-time accuracy for use cross functionally
Improve and sustain OTD performance and shipment forecast predictability while partnering with Sales to ensure customer satisfaction
Identify bottlenecks through data and cross-functional analysis
Eliminate reactive scheduling through proactive planning cadence
Partner with Supply Chain to align material requirements with shipment forecasts while maintaining working capital and inventory turn objectives.
Capacity Modeling & Production Alignment
Develop and maintain capacity models based on current backlog, sales forecasting, with a rolling 3–6-month outlook
Quantify constraint impact prior to capital or labor decisions, gather and present relevant constraint data for supporting investment justifications
Lead process standardization to eliminate manual workarounds and reduce planning variability
Align Sales forecasts with production capability
Drive cross-facility production alignment to optimize throughput and balance constraints across multiple manufacturing sites
ERP & Planning System Discipline
Own planning-related ERP master data integrity and drive continuous improvement in data quality for accuracy
Serve as Planning functional owner for advanced planning system and AI-enabled scheduling initiatives
Ownership of scaling and simplifying planning processes by transitioning from offline spreadsheet-based tools to sustainable, system-based workflows that can scale with business and complexity growth.
Partner with Data and IT teams to ensure ERP improvements drive beyond reporting to execution and delivery of results
Translate operational constraints and production logic into system architecture that can be built upon
Standardize work order release, closure, and scheduling discipline
Ensure planning process sustainability and documentation
Talent Development & Succession
Directly manage, develop, and coach Planner I and Planner II roles
Build structured capability roadmap for planning team
Transition Planning function from transactional execution to analytical and proactive ownership
Foster culture of accountability, ownership, and continuous improvement
Cross Functional Leadership
Lead segment planning meetings
Collaborate with Sales, Engineering, Quality, Supply Chain, and Production to meet business objectives such as shipment forecast or customer requests
Provide executive-ready planning analytics and reporting
Align planning strategy with broader operational objectives