Senior Manager, Customer Supply Chain Manager - Walmart

Senior Manager, Customer Supply Chain Manager - Walmart

New York, NY ;
Bentonville, AR

Flamingo is an award-winning body, hair, and care brand delivering high-performance, thoughtfully designed products at an accessible price. Since launching in 2018, we’ve become the #3 player in women’s shave in the U.S. and expanded our assortment to offer products for every routine: razors, wax steps for face and body, shave gel, and body lotion. Our products and campaigns have been covered by Vogue, Vanity Fair, Elle, and InStyle, and we’ve won major beauty accolades from Allure and Essence.

With a mission to empower women, Flamingo is committed to partnering with nonprofit partners working to help women and girls build healthy relationships with their bodies and has helped connect over 200K people to quality mental health and wellbeing resources.

Flamingo is part of Mammoth Brands, the modern CPG company behind category-leading brands Harry’s, Flamingo, Lume, Mando, and Coterie. Driven by a mission to “Create Things People Like More,” the company is creating a new model—and home—for brands, founders, and talent looking to solve unmet needs, improve peoples’ lives and ultimately change the status quo. Mammoth Brands is committed to making a positive impact and donated over $20 million through our network of nonprofit partners to date.

The Customer Supply Chain (CSC) team sits within the broader Supply Chain organization and is directly embedded with our Retail partners. As part of Mammoth Brands, we support the end-to-end execution of Harry’s, Flamingo, Lume, and Mando across key retailers.

As the Sr Manager for Walmart, you will own retail operations, forecasting, replenishment, and in-store execution from shelf to supply node. You will be accountable for ensuring best-in-class availability, in-stocks, OTIF performance, and flawless execution for Walmart’s omni-channel business. While this role is primarily Walmart-focused, there may be periodic support across other retailers depending on business needs.

• Lead Walmart forecasting & replenishment across all Mammoth Brands (Harry’s, Flamingo, Lume, Mando).
• Manage weekly CPFR processes, ensuring accurate internal inputs and alignment with Walmart’s Supply Plan.
• Conduct weekly replenishment analyses to monitor store inventory health, supply flow, and demand shifts.
• Own Event Management forecasting (promotions, resets, modular changes), new item launches, and end-of-life transitions.
• Identify risks and opportunities related to in-stocks, waste, overstocks, and seasonal dynamics.

• Serve as the go-to expert on Walmart operational processes including fulfillment, warehousing, transportation, in-store operations, modular execution, allowances, and chargebacks.
• Own OTIF and operational KPI tracking for Walmart; analyze root causes and lead corrective actions.
• Manage chargeback mitigation and recovery through cross-functional collaboration and retailer insights.
• Coordinate with Store Operations partners to identify and drive improvements in on-shelf execution.

• Act as the primary point of contact for Walmart Replenishment Managers and Walmart Supply Chain stakeholders.
• Translate large, complex datasets and Walmart insights into clear recommendations that drive shared growth.
• Build and maintain strong relationships with internal and external partners, including 3PLs, HQ brokers, and Walmart’s supply chain & replenishment teams.

• Serve as a key input in our commercial forecast with Demand Planning and Commercial teams.
• Identify gaps in current operational processes and build strategic roadmaps for improvement. Support and/or lead cross-functional projects that drive operational efficiency and demand/supply alignment.
• Share & apply best practices across channels and retailers when appropriate.

• Develop and maintain reporting, dashboards, and operational scorecards tied to KPI performance (e.g., OTIF, in-stocks, weeks of supply, supply plan accuracy).
• Leverage external Walmart systems as well as…