Guilherme Brocco, EMBA
Purchasing Manager @ Magna International
About
I'm a Global Purchasing and Procurement Executive with 16+ years of experience in the automotive industry, specializing in strategic sourcing, supplier development, and cross-functional leadership across North America, South America, Europe, and Asia. Currently at Magna International, I manage a $295M+ annual spend portfolio across direct and indirect categories, with 38 active suppliers across three continents, supporting global OEMs including General Motors, Volkswagen, Ford, Stellantis, Renault, Nissan and Honda.My expertise spans the full purchasing and procurement cycle, from RFQ and cost formation analysis to contract negotiation, commodity management, and supplier performance governance. I hold an Executive MBA from Michigan State University and I'm certified in Lean Six Sigma Yellow Belt, MMOG/LE 5.0, VDA 6.3, and FMEA 4th Edition. Fluent in English, Portuguese, and Spanish, with extensive experience managing international supplier relationships and cross-cultural teams.Promoted three times in under two years at Magna MSSC, from MRO Buyer to Purchasing Manager, reflecting both consistent delivery and the trust built with leadership across the organization. Active member of Magna's cross-divisional purchasing network, with established relationships with the Magna International Category Management team. Background spanning Supplier Quality, Engineering, and Procurement at Tier 1 level provides a cross-functional perspective that strengthens supplier strategy, internal alignment, and a continuous improvement mindset applied to every team, process, and partnership.I'm always open to connecting with professionals across the automotive and procurement space. Feel free to reach out.Contact:Phone:+1 (810) 276-3576Email: g.siqueira.brocco@gmail.com
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United States
Automotive
Strategic Sourcing, Global Sourcing, Supplier Development, Cost Reduction, Procurement Management, Purchasing, Supplier Quality, Materials Management, Conflict Management, Supplier Negotiation, Procurement, Six Sigma, Automotive Industry, Kaizen, Continuous Improvement, Lean Manufacturing, Procurement Negotiation, Supplier Management, Supply Chain Management, Management
Experience

Purchasing Manager
St Clair, MI
Global Tier 1 automotive supplier. MSSC St. Clair: 1.3M SQ FT facility, primary customer General Motors - electric vehicle structural components. Annual direct spend of $89M (2024) and indirect spend of $206M (2024). • Ownership of $295M+ in combined annual purchasing spend across direct and indirect materials, with full accountability for 38 active suppliers in North America, Europe, and Asia. • Leadership of a team of 2 Buyers and MRO Crib operations, with direct oversight of priorities, workload distribution, and individual performance. • Execution of strategic sourcing across direct commodities - stampings, roll forming, fasteners, sealants, and paint - and indirect categories including capital equipment, facilities, logistics, cobots, and system integrators. • Delivery of supplier negotiations, contract management, and cost reduction initiatives across all categories, ensuring full compliance with Magna corporate governance and Cosma divisional standards. • Management of departmental KPIs and Mafact process compliance, with cross-functional support to Engineering, Quality, and Logistics teams on commercial and technical matters. • Coordination of purchasing scope for plant expansion (Phase 2 and Phase 3 buildings), ensuring infrastructure procurement alignment with project timelines and budgets. • Collaboration with Magna International Category Management and corporate purchasing leadership to ensure divisional alignment and cross-Cosma best practice adoption.

Purchasing Supervisor
St Clair, MI
• Promotion to Supervisor within 9 months of joining MEVS, with direct management of 7 employees (5 Buyers, 2 Tool Crib attendants). • Expansion of scope from MRO to full direct material sourcing, covering steel, fasteners, and paint categories. • Implementation of OneNote-based tracking system to strengthen visibility and coordination across direct and indirect purchasing activities.

Senior Buyer
St Clair, MI
• Establishment of indirect material sourcing structure and contract management framework supporting Maintenance, Facilities, Quality, HR, and EHS departments. • Commercial leadership of the new cafeteria project - supplier selection, negotiation, and full coordination with the construction team. • Benchmarking of MRO practices across Cosma facilities in North America, with identification of cost improvement and standardization opportunities.

Purchasing Supervisor
São José dos Pinhais, PR
Tier 1 stamping and welding unit. Cross-border sourcing responsibility across South America, North America, Europe, and Asia. • Leadership of a team of 6 (Junior Buyer, Trainee, 4 MRO staff), with full oversight of direct and indirect purchasing across steel, fasteners, and paint categories. • Development and execution of component localization initiatives, migrating European-sourced parts to Brazilian suppliers with gains in lead time, logistics cost, and local supply base competitiveness. • Management of supplier contracts and RFQ execution for new program launches and life-series programs.

Purchasing Specialist
São José dos Pinhais, PR
• Accountability for direct material commodities (steel, fasteners, paint) and supplier base management across four continents. • Business partnership with Engineering, Quality, and Logistics on new business development and program launch support.

Senior Buyer
São José dos Pinhais, PR
• Execution of supplier negotiations and RFQ processes for direct materials, with focus on cost formation analysis and market benchmarking. • Maintenance of national and international supplier relationships through regular technical and commercial site visits.

Senior Supplier Quality Analyst
São José dos Pinhais, PR
• Management of engineering changes, APQP documentation, and new supplier development across program launch phases. • Direct interface with all customer accounts at the Magna unit in São José dos Pinhais, with full ownership of quality documentation and customer reporting systems.

Supplier Quality & Quality Assurance Analyst (SQD/SQA)
São Bernardo do Campo, SP
• Development of PPAPs for client and supplier approvals; execution of process audits and supplier qualification programs. • Operation of macrography lab and direct material receiving inspection; monitoring of quality performance indicators.

Supplier Quality Development Analyst
Brazil
Global driveline and powertrain supplier. Sourcing responsibility for iron, aluminum, and brake components. • Execution of wall-to-wall supplier audits, APQP/PPAP follow-up, and engineering change validations. • Leadership of Supplier Problem Review (SPR) meetings and weekly cost recovery sessions.

Buyer – Cast Iron, Cast Aluminum, Painting, Brakes
Brazil
• Execution of RFQ processes, supplier negotiations, and market surveys for cast and painted components. • Organization of Supplier Day events and facilitation of workshops focused on process improvement, logistics optimization, and cost reduction.

Supplier Quality Analyst
Brazil
• Monitoring of supplier and third-party performance on the plant floor; development of control plans and visual inspection aids. • Management of non-conforming material quarantine and corrective action implementation tracking.
Guilherme Brocco, EMBA 's Contact Information
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