Planner II

THIS ROLE IS FULLY ONSITE IN LITTLETON, MASSACHUSETTS

The Planner II is responsible for end-to-end planning and execution of material and production plans for complex, long-lead, engineered-to-order medical systems and service assemblies. This role operates at the system and project level, translating MRP outputs, engineering releases, and SIOP commitments into executable production plans that support on-time system delivery, service fulfillment, and regulatory compliance.

The Planner II acts as a cross-functional integrator, working closely with Manufacturing, Purchasing, Engineering, Quality, and Program Management to manage schedules, material readiness, and execution risk across assigned systems or service programs.

• Develop and maintain system-level production plans aligned to approved SIOP and master schedules
• Create, release, and manage work orders, jobs, and build packages in ERP/MRP systems
• Plan and sequence production activities across manufacturing cells, commissioning, and test phases
• Own material readiness for assigned systems, including long-lead and critical components
• Analyze MRP outputs to identify shortages, constraints, and risks
• Coordinate with Purchasing on PO placement, expediting, and supplier recovery actions
• Maintain accurate planning parameters (lead times, order policies, safety stock where applicable)
• Support BOM integrity by validating planning alignment to released engineering configurations
• Serve as the primary planning interface for assigned systems or service programs
• Partner with Engineering to manage ECO impacts to active builds and schedules
• Work with Manufacturing Supervisors to balance capacity, priorities, and labor constraints
• Support Program Management with schedule inputs, risks, and recovery plans
• Track execution against plan and proactively identify schedule and material risks
• Lead or support mitigation plans for shortages, delays, or scope changes
• Escalate issues through Tier I / Tier II operational governance as appropriate
• Maintain clear ownership and documentation of planning assumptions and decisions
• Maintain planning-related KPIs (e.g., WO on-time release, material availability, schedule adherence)
• Support Tier meeting reporting and visual management boards
• Identify opportunities to improve planning processes, data accuracy, and system utilization
• Contribute to standard work development and planning best practices

• Bachelor’s degree in Supply Chain, Operations Management, Engineering, or related field (or equivalent experience in manufacturing planning)
• 3–6 years of experience in production planning, material planning, or supply chain execution
• Experience working in engineered-to-order, project-based, or regulated manufacturing environments
• Strong working knowledge of ERP/MRP systems (e.g., Salesforce, Oracle, SAP, Epicor, Net Suite, etc.)
• Proficiency in Excel (pivot tables, formulas, basic data analysis)

• Experience in medical device, capital equipment, aerospace, or defense manufacturing
• Familiarity with SIOP / Master Scheduling concepts
• Experience with leveraging AI tools to boost productivity and efficiencies.
• Understanding of BOM structures, ECO workflows, and configuration control
• APICS/ASCM certification (CPIM, CSCP) or progress toward certification
• Experience supporting service operations or installed-base programs

• Systems thinking and schedule discipline
• Strong analytical and problem-solving skills
• Clear, professional communication across technical and non-technical teams
• Ability to manage multiple priorities in a dynamic environment
• High attention to detail with a bias toward execution and follow-through

• Ability to work in a manufacturing environment as needed
• Occasional lifting of materials up to standard office/manufacturing limits
• On-site presence required for system builds, reviews, and coordination activities

The hiring range represents what Mevion Medical Systems, Inc. reasonably expects to pay for this position at the time of posting. The actual salary offered will depend on the selected candidate’s qualifications, experience, skills, and other job-related factors.