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Senior Planner Buyer

Job in San Diego, San Diego County, California, 92101, USA
Listing for: Monarch Quantum
Full Time position
Listed on 2026-08-16
Job specializations:
  • Supply Chain/Logistics
    Procurement / Purchasing, Inventory Control & Analysis, Logistics Coordination
Job Description & How to Apply Below

Senior Planner/Buyer

Join our dynamic team as a Senior Planner/Buyer. You'll play a key role in building our foundation, working with cutting-edge technologies, and supporting new product development. This position is ideal for a self-starter who thrives in a fast-paced, engineering-driven environment and enjoys working closely with technical teams to ensure material readiness for complex products. You will execute planning and procurement activities that support rapid product iteration, evolving Bills of Materials (BOMs), and demanding technical requirements.

This role is an experienced individual contributor position with significant cross-functional exposure. Your key responsibilities are as follows:

  • Develop and maintain material requirements plans (MRP) to support engineering builds, prototype development, and low-rate production. Partner closely with Engineering to manage BOM releases, revisions, and Engineering Change Orders (ECOs).
  • Execute procurement against the Master Production Schedule (MPS) and ensure materials are aligned to cost, schedule, and performance objectives. Collaborate with Engineering, Quality, Program Management, and Finance to ensure material alignment with program milestones.
  • Monitor and manage long-lead-time components to prevent schedule risk. Proactively identify alternate parts or suppliers for long-lead or at-risk components.
  • Track and report key supply chain metrics, including on-time in full (OTIF), supplier lead times, purchase price variance (PPV), inventory accuracy, and material availability.
  • Maintain accurate planning parameters (lead times, safety stock, order policies) within the ERP system.
  • Identify, qualify, and manage suppliers capable of meeting technical specifications and quality requirements.
  • Lead RFQs, perform cost analysis, and negotiate pricing, terms, and delivery schedules.
  • Establish and manage supplier relationships to ensure on-time, quality performance.
Position Requirements
10+ Years work experience
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