Sr. Buyer​/Planner

SI-BONE is a fast-growing, publicly traded medical device company that pioneers minimally invasive sacropelvic solutions. Our mission is to help patients rise up and reach for the stars, and our vision is to lead globally to make sacroiliac (SI) joint conditions universally recognized and effectively treated through innovation, evidence, education, and advocacy.

We are focused on improving the lives of patients with sacroiliac pelvic conditions. We are looking for people who are passionate about our mission and who are willing to work hard to achieve it. We are also looking for people who are:

• Agile:
  We work in a fast-paced environment and need to learn and adapt to change quickly.
• Creative:
  We embrace creativity, and we need people who are not afraid to challenge the status quo.
• Team Players:
  We roll up our sleeves and work together as one team to achieve our goals.

We are seeking a highly adaptable Sr. Buyer/Planner to own the end-to-end supply execution for our most critical, high-revenue implant product lines. This role is accountable for maintaining uninterrupted supply in a complex, regulated medical device environment by proactively identifying risk, validating demand signals, and driving timely, data-backed purchasing and planning decisions.

The Sr. Buyer/Planner executes disciplined, compliant, and data-driven procurement practices that balance cost, quality, inventory, and supply continuity. This role requires strong judgment, clear documentation of decisions, and strict adherence to established sourcing, purchasing, and quality standards. You will manage a highly complex supply chain spanning multi-level assemblies, sterilized finished goods, and supplier transitions, including turnkey manufacturing changes. Success in this role depends on the ability to interpret MRP outputs, engineering changes, and operational constraints, then translate them into actionable and prioritized supply strategies.

This position demands technical literacy, strong analytical capability, and persistent supplier engagement. The ideal candidate operates with minimal oversight, anticipates issues before they disrupt supply, and takes decisive action to resolve constraints while protecting service levels and business objectives.

• Execute rigorous, daily reviews of MRP and planned orders to ensure 100% material availability for high-revenue product lines.
• Analyze supplier capacity against forecasted demand, identifying bottlenecks before they impact production.
• Manage the complexities of sterilized product flow, accounting for extended lead times and regulatory hold periods.
• Serve as the supply chain expert for the Change Notice (CN/ECN) process, ensuring all revisions are phased in without stockouts or excessive obsolescence.
• Demonstrate expert-level proficiency in deciphering Multi-Level Bills of Materials (BOMs), understanding the relationship between raw materials, sub-assemblies, and finished implants.
• Partner with Engineering and Quality to manage turnkey manufacturing transitions and supplier onboarding.
• Consolidate disparate data from multiple ERP modules and external supplier reports into cohesive tracking tools.
• Utilize advanced Excel functions (Nested Ifs, XLOOKUP, Index/Match, Pivot Tables, and Power Query) to build "what-if" scenarios and dashboarding for executive review.
• Act as the primary point of contact for multiple Tier 1 and Tier 2 suppliers, coordinating complex schedules where one supplier's output is another’s input.
• Manage indirect procurement needs supporting the implant business unit, ensuring all MRO and specialized tooling requirements are met.
• Support new product launches by managing completion of supply chain activities that must occur to ensure initial builds of inventory for launch and sustaining availability.
• Perform other duties as assigned
• Support the SI-BONE Quality System

• Bachelor’s degree in supply chain, business, or related field
• 5-8 years’ experience in Operations and Procurement
• Deep understanding of Medical Device Manufacturing (ISO 13485 / FDA 21 CFR 820 environment).
• Expert-level Excel…