Manager, GMP Supply Planning & Procurement

Arcellx • Redwood City, CA

3d • $115,000 - $155,000 • Onsite

About The Position

In this role, you’ll ensure uninterrupted, compliant, and efficient supply of GMP raw materials, consumables, and services to support Arcellx’s manufacturing operations. This role combines strategic planning, supplier risk management, and tactical execution, with ownership for Arcellx manufacturing supply operations and broader supply chain activities.

Requirements

• 6+ years of experience in pharmaceutical/biotechnology purchasing and/or sourcing.
• Proven experience managing GMP suppliers.
• Hands-on experience with ERP systems and in developing reports
• Strong understanding of GMP requirements related to raw materials, supplier management, and change control.
• Must be able to work independently in a startup environment
• Exceptional communication and interpersonal skills.
• Ability to work in a fast-paced environment.
• Ability to work in a lab setting/environment and able to handle materials up to 50lbs.

Responsibilities

• Execute material requirements planning (MRP) for GMP manufacturing, gowning, and operational needs.
• Establish and maintain safety stock levels, reorder points, and reorder quantities.
• Translate forecast changes and production schedules into actionable material plans.
• Develop scenario-based planning to address variability in production schedules, patient demand and supplier lead times.
• Develop, maintain, and continuously improve compliant SOPs, work instructions, and process controls for P2P and S2D.
• Ensure workflows, master data, integrations, and reporting are audit-ready and aligned with regulatory expectations.
• Execute the end-to-end purchase order lifecycle in the ERP and ClearSpider systems.
• Manage PO creation, review, issuance, tracking, changes, transfers, returns, and replacements.
• Ensure accuracy, timeliness, and compliance with GMP and operational requirements.
• Support the maintenance of strong, compliant supplier relationships.
• Support and where applicable, drive supplier issue resolution, complaint management, and follow-up activities.
• Track, trend, and report supplier performance metrics, including OTIF, lead-time adherence, and service reliability.
• Monitor and support supplier-driven material changes, including notifications, impact assessments, qualification support, and discontinuations.
• Define and execute alternate and substitute material strategies to mitigate supply risk.
• Coordinate implementation and lifecycle management of alternate/substitute materials with Quality, Manufacturing, and Technical Operations.
• Manage GMP raw material supplier contracts, including pricing, lead times, service levels, and commercial terms.
• Support sourcing, negotiation, and contract execution across the organization.
• Lead second-sourcing and supply continuity initiatives to reduce single-source dependency and improve resilience.
• Identify critical material risks, including long-lead, single-source, and capacity-constrained items.
• Develop mitigation plans and escalate risks to supply chain leadership.
• Ensure procurement, supplier, and material planning records are complete, accurate, and inspection-ready for internal and external audits.
• Partner with Manufacturing, Quality, Finance, and Technical Operations to align procurement and material planning with operational priorities.
• Drive continuous improvement initiatives focused on cost optimization, service performance, compliance, and data integrity.
• Analyze supplier performance and material spend data to inform sourcing strategies and operational improvements.

Benefits

• 100% coverage for medical, dental and vision for team members and dependents, unlimited vacation, a 3-day weekend every month, fully-paid parental leave for up to 6 months, tuition reimbursement, 401k employer contribution and more.

What This Job Offers

• Job Type: Full-time
• Career Level: Manager
• Education Level: No Education Listed