Demand Planning Manager

CarParts.com

Planning Manager leading demand forecasts and inventory supply plans for CarParts.com, an auto care eCommerce platform. Driving cross-functional collaboration and process improvement initiatives.

Posted 6/20/2026full-timeLong Beach • California • 🇺🇸 United StatesMid-LevelSenior💰 $120,000 - $145,000 per yearWebsite

Tech Stack

Tools & technologies

Python

About the role

Key responsibilities & impact

Lead the development of demand forecasts using business intelligence, statistical modeling, historical sales trends, pricing, seasonality, and qualitative inputs.
Own the inventory supply plan for assigned categories, ensuring optimal inventory levels are maintained across distribution centers to support demand without creating overstock risk.
Drive cross-functional alignment with Category Managers, the International Supply Chain Team, and other operations stakeholders to understand and communicate forecast drivers.
Develop and execute inventory strategies for new products, promotions, existing items, and product phase-outs; lead the response to sudden changes in demand.
Monitor and report on Key Performance Indicators (forecast accuracy, forecast error, lead time adherence, order modification rate); lead root cause analysis and implement corrective actions.
Identify and lead process improvement initiatives across the planning function, partnering with leadership to develop scalable solutions.
Maintain deep category expertise including seasonality, pricing dynamics, trend patterns, sales drivers, and product lifecycle plans.
Manage vendor and distributor relationships in partnership with the International Supply Chain Team to resolve issues and improve performance.
Provide executive-level ad-hoc reporting and analysis as needed.
Lead or contribute to special projects as assigned by the AVP.

Requirements

What you’ll need

Bachelor’s degree in Supply Chain, Statistics, Business, or related field; advanced degree a plus.
5+ years of experience in Demand Planning, Forecasting, Analytics, or Supply Chain.
3+ years of experience with Python in a planning or forecasting environment.
Strong project management skills with the ability to prioritize and deliver across multiple workstreams and deadlines.
Excellent communication and presentation skills across all levels of the organization, including senior leadership.
Advanced proficiency in Microsoft Suite (Excel, PowerPoint, etc.).

Benefits

Comp & perks

Equal Opportunity Employer

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

demand forecastingstatistical modelinginventory managementforecast accuracyforecast errorroot cause analysisprocess improvementPythonanalyticsproject management

Soft Skills

cross-functional alignmentcommunication skillspresentation skillsleadershipproblem-solvingprioritizationcollaborationadaptabilityanalytical thinkingexecutive reporting