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Esmeralda Esparza

@esmeraldaesparza

Procurement Commodity Leader at KOSTAL Mexicana leading PCB and PCBA sourcing, global supplier relationships, and cost and supply continuity initiatives.

Mexico

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At KOSTAL Mexicana, I lead procurement strategy for PCB and PCBA commodities, manage global supplier relationships, and drive sourcing for new programs. I also support executive management with market intelligence and strategic supplier assessments.

In KOSTAL Mexicana’s Service Parts Procurement role, I manage the team and develop strategies for spare parts and aftermarket components. I coordinate with Sales, Logistics, and Operations to maintain availability and service-level compliance.

Previously, as Commodity Buyer – PCB & PCBA and Commodity Buyer – Plastics & Resin at KOSTAL Mexicana, I managed supplier portfolios, RFQs, negotiations, and sourcing decisions. I supported new launches, supplier qualification, engineering changes, and cost-saving initiatives.

Earlier, I worked in procurement and purchasing roles at MANN+HUMMEL, Phillips-Medisize, and Samsung Electronics & Digital Appliances. My work included metal-parts sourcing, materials planning, supplier negotiations, inventory optimization, and supply continuity across automotive, electronics, and medical manufacturing.

Experience

Work history, roles, and key accomplishments

Current

Procurement Commodity Leader

Current

KOSTAL Mexicana

Jan 2026 - Present (9 months)

Lead procurement strategy for PCB and PCBA commodities, managing global supplier relationships, negotiations, and cost initiatives. Coordinate cross-functional teams and support executive management with sourcing recommendations.

Strategic Sourcing Supplier Development Negotiation Cost Reduction PCB PCBA Supplier Management Cross functional Leadership Risk Mitigation SAPMM

Current

Service Parts Procurement & Team Leadership

Current

KOSTAL Mexicana

Directly manage the Service Parts Procurement team, ensuring availability of spare parts and aftermarket components. Develop procurement strategies, lead negotiations, and establish KPIs for availability and supplier performance.

Parts Procurement Team Leadership Supplier Negotiation Inventory Management KPI development Continuous Improvement

Commodity Buyer – PCB & PCBA

KOSTAL Mexicana

Feb 2024 - Jan 2026 (1 year 11 months)

Managed PCB/PCBA supplier portfolios for serial production and new launches, leading RFQs, quotation analysis, and sourcing decisions. Negotiated pricing and productivity agreements, and coordinated engineering changes and supplier qualification.

PCB PCBA Supplier Management RFQ Negotiation Cost Reduction PPAP Supplier Qualification SAPMM

Commodity Buyer – Plastics & Resin

KOSTAL Mexicana

Jan 2022 - Dec 2024 (2 years 11 months)

Managed components and suppliers aligned with global commodity strategy, leading negotiations and price reductions. Supported RFQs, PPAP workflow, engineering changes, and cost-saving initiatives.

Plastics Resin Supplier Management Negotiation Cost Reduction PPAP Engineering Changes SAPMM

Cost Recovery & Program Capacity Management

KOSTAL Mexicana

Dec 2018 - Dec 2022 (4 years)

Analyzed supplier capacity for new programs and demand increases, managing handover to serial production. Coordinated tooling investments and led material relocation during the Ukraine-Russia disruption.

capacity management Tooling Supplier Coordination Program Management Risk Mitigation SAPMM

NAFTA Commodity Buyer – Metal Parts

MANN+HUMMEL

Sep 2017 - Nov 2018 (1 year 2 months)

Owned metal-parts sourcing for the NAFTA automotive region, including RFQs, quotation analysis, and supplier nomination. Partnered with US and Mexico purchasing teams on launches and global negotiations.

Metal Parts Strategic Sourcing Supplier Development Negotiation Cost Reduction RFQ Supplier evaluation

Planning & Purchasing – Medical Unit

Phillips-Medisize

May 2016 - Sep 2017 (1 year 4 months)

Planned raw materials against forecasts and supplier lead times, managing purchase orders and inventory optimization. Negotiated with suppliers and coordinated inbound logistics and KPI reporting.

Material Planning Purchase Order Inventory Optimization Supplier Negotiation Logistics KPI Reporting SAPMM

Planning & Purchasing

Phillips-Medisize

Apr 2014 - Jun 2016 (2 years 2 months)

Planned materials for automotive and medical units, coordinating domestic and international logistics and import documentation. Managed supplier negotiations, cost reduction, and inventory reporting.

Material Planning Logistics Import Documentation Supplier Negotiation Cost Reduction Inventory Reporting SAPMM

Purchasing Coordinator – Local Material Parts

Samsung Electronics & Digital Appliances

Jun 2012 - Apr 2014 (1 year 10 months)

Planned production materials and managed inventory, supplier deliveries, forecasts, and purchase orders. Coordinated engineering changes and prepared aging, stock, WIP, and invoice reports.

Material Planning Inventory Management Purchase Order Forecasting SAPMM Reporting