Senior Manager, Supply Chain Planning

Proper Voltage•Carlsbad, CA

8h•$175,000 - $195,000•Hybrid

About The Position

The Senior Manager, Supply Chain Planning builds and owns our sales and operations planning process: reconciling demand forecasts against contract manufacturer capacity, equipment throughput, and cell supply well ahead of when those constraints would otherwise surface as a shortage. This is the role that catches a capacity mismatch in a planning review, not three weeks before a build. This role reports to the Director of Supply Chain and works closely with sales, engineering, our contract manufacturers, and our cell supplier. In the near term, this role also owns hands-on clear-to-build execution, the daily work of tracking material against the build plan, expediting suppliers, and keeping builds unblocked, while we build out the planning function. We expect this to be a two-phase role. Today, you'll split time between building the S&OP process and running day-to-day execution. As volume grows, we plan to bring in a dedicated materials execution hire to take day-to-day clear-to-build off your plate, so you can focus fully on planning, forecasting, and the cross-functional forecast-versus-capacity rhythm.

Requirements

7+ years in supply chain planning, S&OP, or demand planning in a hardware or industrial product environment.
Direct, hands-on experience standing up an S&OP or demand-capacity planning process from scratch, not just running or maintaining one that already existed. Early-stage or resource-constrained company experience strongly preferred.
Direct experience reconciling demand forecasts against manufacturing or supplier capacity constraints.
Hands-on materials execution experience: purchase order management, supplier expediting, and build readiness tracking.
Strong analytical and modeling skills; comfort building planning tools in Excel or similar without a dedicated planning system.
Demonstrated ability to run a cross-functional process that gets engineering, sales, and leadership aligned on a shared plan.

Nice To Haves

Experience in battery, energy storage, power electronics, or other hardware-adjacent categories.
Experience planning around long-lead, high-value components such as battery cells or semiconductors.
Experience working with a contract manufacturer in a component-direct sourcing model.
Experience scaling a company through a steep production ramp.

Responsibilities

Build the initial planning cadence and tooling from scratch: a rolling demand forecast, a capacity model spanning contract manufacturer throughput, equipment constraints, and cell supply, and a recurring review cycle with defined inputs, outputs, and decision owners.
Partner with sales and engineering to build and maintain the rolling demand forecast, and translate that forecast into a supply and capacity plan.
Run scenario planning against demand and supply variability (acceleration, supplier slips, capacity changes) so leadership has real options in hand before being asked.
Identify capacity or supply constraints early and drive cross-functional decisions to resolve them before they become shortages. Escalate constraints that can’t be resolved through the normal process, with clear options and trade-offs.
Own long-lead cell capacity planning in partnership with our cell procurement team.
Own the part shortage list and drive recovery plans to closure.
Place and manage purchase orders against forecast and production schedule; follow up directly with suppliers on committed ship dates and expedite when at risk.
Run material readiness reviews ahead of build events with our contract manufacturers.
Partner with our sourcing and procurement team on supplier delivery performance and long-term capacity commitments.
Partner with supplier quality on shipments affected by a quality hold or corrective action.
Help define and hire for a dedicated materials execution role as volume grows, and transition day-to-day execution to that role once it lands.