Senior Buyer - Pleasanton, CA

Calyxo • Pleasanton, CA

3d • $135,000 - $145,000 • Onsite

About The Position

Calyxo, Inc. is a medical device company headquartered in Pleasanton, California, focused on improving kidney stone treatment. The Senior Buyer has end-to-end ownership of procurement execution and outcomes for assigned commodities, suppliers, and Contract Manufacturers (CMs). The role is accountable for material availability, supplier and CM execution performance, inventory health, and cost effectiveness, within category strategies and commercial frameworks established by Category Management. The Senior Buyer works with internal stakeholders and external partners to support supply continuity, scalability, compliance, manufacturing operations, product changes, and business growth.

This role manages the procurement lifecycle from purchase order execution and delivery through issue resolution, performance management, and close-out. It also supports sourcing activities, planning and ordering, CM execution, inventory and forecast alignment, supplier performance and compliance, cost improvement, and procurement KPIs. The position is onsite in Pleasanton, California, with less than 10% travel, and reports to the Sr. Director, Supply Chain.

Requirements

• Bachelor’s degree in Business Administration or equivalent Buyer/Purchasing experience.
• At least 8 years of experience supporting a manufacturing environment.
• Experience in production control, material demand planning, or supply chain management.
• Strong working knowledge of modern ERP/MRP systems.
• Advanced Excel skills, including pivot tables, macros, and managing large data sets.
• Strong communication and cross-functional partnership skills with Engineering, Manufacturing, R&D, Finance, Quality, suppliers, and Contract Manufacturers.
• Highly organized and able to manage multiple priorities independently; motivated, detail-oriented, and execution-focused.
• On-site role in Pleasanton, California; travel is less than 10%.
• Legal authorization to work in the United States is required.

Nice To Haves

• Medical device experience is preferred.

Responsibilities

• Own the end-to-end procurement execution lifecycle for assigned scope, from purchase order execution and delivery through issue resolution, performance management, and close-out.
• Serve as the point of accountability for supplier and Contract Manufacturer execution, ensuring cost, quality, delivery, and service objectives are met.
• Negotiate and procure materials, components, equipment, supplies, and services within established category strategies, contracts, and commercial frameworks.
• Collaborate with Calyxo Sourcing teams on supplier selection, negotiations, and implementation; support spot buys and tactical supplier identification and purchasing; and provide sourcing-team backup as needed.
• Plan, execute, and monitor purchase orders using MRP, Kanban, Blanket POs, reschedules, and other planning techniques to meet production requirements.
• Execute pull-ins, push-outs, cancellations, and expedites while minimizing total cost and protecting supply continuity.
• Process supplier returns and ensure applicable credits are applied; work with Receiving, Finance, and suppliers to reconcile receiving and invoicing discrepancies.
• Manage Contract Manufacturers as extensions of Calyxo’s manufacturing operations, ensuring material readiness, capacity alignment, and execution to production requirements.
• Partner with Contract Manufacturers on scale-up, engineering changes, and product transitions, keeping sourcing execution, lead times, and inventory plans aligned to demand.
• Collaborate with Supply Chain, Quality, and Engineering to assess CM performance, drive corrective actions, and implement improvements.
• Support supplier or CM transitions and implementations led by Category Management to ensure effective execution and continuity of supply.
• Own inventory execution strategies for assigned materials, balancing service levels, working capital, lead times, and demand variability within defined policies.
• Monitor and adjust inventory targets, identify shortage and excess risks, and execute mitigation actions.
• Review forecasts with stakeholders, integrate feedback, and align supply execution with demand and operational priorities.
• Monitor supplier and CM execution and compliance with released specifications, contracts, and quality requirements; manage issues through escalation, follow-up, and recovery plans.
• Participate in sourcing events, supplier assessments, and audits in support of Category Management strategies, partnering with the Supplier Quality Engineer.
• Maintain accurate supplier files and purchasing system data; visit suppliers and CMs as needed to support performance and resolve issues.
• Identify and deliver execution-driven cost savings and cost-avoidance opportunities while maintaining supply continuity and compliance.
• Create, improve, and follow purchasing processes and work instructions, supporting transaction discipline and adherence to purchasing policies and standards of conduct.
• Own procurement execution KPIs for assigned suppliers and parts, analyze trends and root causes, and implement corrective actions.
• Communicate risks, constraints, and mitigation plans proactively to cross-functional stakeholders.
• Perform other duties and special projects as assigned.

Benefits

• Competitive base salary of $135,000–$145,000 and variable incentive plan.
• Stock options.
• Employee benefits package including 401(k), healthcare insurance, and paid vacation.
• Opportunity for continuous learning and professional growth in a diverse work environment.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior