João Francisco Constantino
Senior Buyer @ TROX DO BRASIL
About
With over 12 years of experience in procurement and supplier development, I specialize in import portfolio management, strategic sourcing, and process optimization. Currently serving as a Senior Buyer at TROX do Brasil LTDA, I manage an annual import turnover of USD 400k, focusing on key materials such as germicidal lamps, polymers, and aluminum. I have implemented advanced negotiation frameworks and spearheaded strategic projects in collaboration with our German headquarters, driving global initiatives such as Jaegger implementation and carbon footprint reduction. Known for my expertise in developing new suppliers and facilitating continuous improvement, I have successfully optimized logistics processes, achieving significant freight cost reductions through strategic bids. My commitment to aligning procurement strategies with corporate sustainability goals underscores my focus on creating long-term value for the organization.
Brazil
Curitiba
Mechanical Or Industrial Engineering
Gestão de pessoas, Desenvolvimento de produtos, Desenvolvimento de novos fornecedores, Redução de custos
Experience

Senior Buyer
Curitiba, Paraná, Brasil
• Import Portfolio Management: Managing an annual import turnover of USD 400k, specialising in germicidal lamps, polymers, and aluminium for the company. • Negotiation Frameworks: Implemented advanced negotiation tools (standard quotations and QCDDM forms) to streamline processes and enhance the robustness of client-supplier agreements. • Continuous Improvement & Global Liaison: Leading strategic projects in coordination with the German headquarters, including Jaegger implementation and carbon footprint reduction initiatives, aligned with the Group’s sustainability and corporate strategy. • Logistics Optimisation: Achieved a 14% reduction in sea and air freight costs by conducting quarterly tenders (BIDs) with freight forwarders and optimising orders through cargo consolidation. • Global Strategic Sourcing: Spearheading cross-border negotiations for the Mexico, Argentina, and Brazil units to standardise commodities (germicidal lamps, ballasts, steel, and aluminium). These efforts resulted in improved account management and an annual cost avoidance of approximately USD 360k

Powertrain Senior Buyer
Curitiba, Paraná, Brasil
• Strategic Sourcing & Nomination: Successfully sourced and nominated Powertrain suppliers for the HJF Project (Renault Kardian), covering intake manifolds (Mann+Hummel), fuel rails (Bosch), driveshafts (GKN), and spark plugs (NGK). Completed the process in under 150 days (against a 365-day industry standard) using the QDCFTSR tool. • Localisation & Engineering Liaison: Led the local integration of imported components from India and China in collaboration with Renault-Nissan Engineering. Optimised costs and secured MERCOSUL tax benefits for ECUs and ignition coils, resulting in an annual saving of BRL 500k. • Supplier Audits & ESG: Conducted "Thanks" site visits at Eldor, Bosch, and Mahle to identify cost-reduction opportunities in processes, raw materials, and ESG policies. Achieved overhead reductions between BRL 0.40 and BRL 1.20 per unit through Tier 2 supplier development. • Process Standardisation: Achieved 100% standardisation of Quotation Templates (Standard Quotations) across the Powertrain perimeter, including Black Box suppliers. • Budget & Relationship Management: Secured 40% of the total Powertrain budget for the semester through strategic negotiations and stakeholder relationship management, leveraging new business opportunities to incentivise supplier cooperation.

SENIOR BUYER
Contenda, Paraná, Brasil
Westaflex TIER 1 Stellantis supplier in UE • Critical Raw Material Mapping: Catalogued critical raw materials (RMs), expanding the supplier base to 2–3 sources per item. This enhanced procurement resilience and directly improved the company's product margins. • Sustainable Packaging: Achieved 100% development of FSC-certified packaging (Embrart, Globalpack) in under one year, aligning with the company’s ESG practices. • Logistics Network Optimisation: Sourced, selected, and nominated new logistics service providers in Spain and Portugal (transitioning from GEFCO to SERVEO). This resulted in a 12% reduction in warehousing costs per unit for the client Stellantis, facilitating rebates that secured future projects for Westaflex. • Strategic Sourcing & Risk Mitigation: Developed alternative sources for imported polymers (HIPS, PA66) from China and local suppliers (Mitsui, Braskem) during the 2022 commodity price surge. This strategy ensured quality, competitive pricing, and prevented production line stoppages despite global raw material shortages.

International Buyer
Curitiba, Paraná, Brasil
• Procurement Optimisation: Streamlined the purchasing process for the Brazil and Peru plants through the implementation of supply contracts and six-monthly forecasts, ensuring price stability, zero cost fluctuation, and improved financial predictability for the Group. • Crisis Management & Negotiation: Successfully renegotiated overdue invoices (up to USD 3 million) with strategic suppliers who had threatened to suspend supply; secured raw materials for production and eliminated the risk of production line stoppages. • IATF Certification – Key User: Acted as Key User/Implementer for the Procurement Department during the company’s IATF certification process, developing formal procedures and managing audit requirements. • Strategic Local Sourcing: Initiated competitive bidding for critical imported raw materials with local MERCOSUL suppliers. In the glass segment, this achieved a 34% reduction in logistics and operational costs (transitioning from Chinese Gorilla Glass to Saint-Gobain Argentina and Chile). • Executive Reporting: Developed KPIs and high-level executive presentations for the Board of Directors.

PRODUCT DEVELOPMENT ANALYST
Curitiba, Paraná, Brasil
• Strategic Sourcing (Asia): Responsible for sourcing electronic components (motherboards and accelerator memory) in Asia for Philco computers (a brand acquired by Britânia). Managed cataloguing, negotiations, and the pursuit of business opportunities with other ODMs (such as Clevo and Lenovo) or grey markets. • Direct Account Management: Secured direct accounts with strategic suppliers (eliminating intermediaries), resulting in improved pricing, marketing funds, and rebates. these funds were subsequently utilised in retail for trade marketing and retail-focused promotional activities.
João Francisco Constantino's Contact Information
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