Laryssa G. N. S. Presa
Spring
Summary
Procurement and commercial leader with 20+ years driving category strategy, supplier value creation, sourcing excellence, and end-to-end financial performance across global operations. Proven track record delivering multi-million-dollar savings, tail-spend optimization, dynamic discounting, marketplace integrations, and structural cost reductions. Trusted advisor to C-suite executives with extensive experience leading global teams across the U.S., Brazil, Europe, Asia, and Latin America. Recognized for transforming procurement processes into strategic, data-driven insights.
Overview
21
21
years of professional experience
1
1
Certification
Work History
Global Supply Planner – Synthetics (S&OP / Commercial Planning)
ExxonMobil
Spring, TX
05.2025 - Current
- Lead commercial-driven global planning for the Synthetics business, enabling margin optimization, supply reliability, and data-driven commercial decisions.
- Lead end-to-end S&OP, aligning demand, supply, production, and commercial priorities.
- Partner with Marketing & Sales to support supplier strategy, cost-to-serve optimization, and margin decisions.
- Execute global forecasting, scenario planning, supply risk assessment, and inventory strategy.
- Provide insights on supply constraints, cost impacts, and commercial trade-offs supporting contracting and category strategy.
- Impact
- Improved forecast accuracy and commercial reliability.
- Strengthened supplier negotiation leverage through enhanced transparency.
- Reduced imbalance cost and increased global service levels.
Global Supply Chain Financial Planning & Stewardship Manager
ExxonMobil
Spring, TX
04.2023 - 05.2025
- Strategic finance partner for global supply chain procurement and logistics spend exceeding $30B+ annually.
- Led global budgeting, forecasting, performance management, and stewardship.
- Supported CEO, President, and VPs with business reviews, analytics, and strategic insights.
- Oversaw global cost governance, ensuring compliance and value optimization across categories.
- Built real-time dashboards and governance models that enhanced decision-making accuracy.
- Led global teams in the U.S., Brazil, Europe, and shared services centers.
- Impact
- Increased forecast confidence and decision speed.
- Improved category financial governance and cost optimization.
- Enabled structural savings and long-term efficiency roadmaps.
Manager, Financial Planning & Stewardship – Procurement
ExxonMobil
Spring, TX
11.2019 - 04.2023
- Led global procurement planning and commercial value delivery.
- Developed standardized category financial models, savings methodologies, and KPIs.
- Implemented dynamic discounting/early payment programs, supporting supplier negotiations and generating major working capital benefits.
- Built global dashboards enabling spend transparency, compliance, and supplier performance visibility.
- Collaborated with sourcing teams to identify cost opportunities and evaluate commercial risks.
- Impact
- Scaled early-pay programs globally → meaningful cost and cash benefits.
- Enhanced category governance and negotiation outcomes.
- Strengthened procurement agility and data reliability.
Manager, Customer Support & Internal Controls (Procurement Operations)
ExxonMobil
Brazil
06.2018 - 11.2019
- Launched Amazon Business as a strategic procurement channel, reducing tail-spend cost and improving compliance.
- Designed supplier-facing materials improving regional alignment and process consistency.
- Impact
- Increased customer satisfaction 200% in key markets.
- Reduced inefficiencies and strengthened low-value purchasing governance.
Special Projects Manager – Purchasing (Procurement Transformation)
ExxonMobil
Brazil
05.2016 - 06.2018
- Led global digital procurement initiatives including Amazon/eBay/Alibaba marketplace integrations and punchout catalogs.
- Executed corporate card provider transition (Amex → Citibank), enabling lower-cost purchasing.
- Implemented e-invoicing and paperless processes across 43 countries.
- Impact
- Achieved multi-million-dollar savings, including 50% transaction cost reduction.
- Delivered sustainability benefits equivalent to 150,000 pages/month saved.
- Strengthened global P2P compliance and supplier management.
Supervisor – Cards Controls, Vendor Master, Payables
ExxonMobil
Brazil & Europe
01.2005 - 01.2016
- Europe Cards Coordinator (Prague/Brazil) – Delivered $3M annual savings, standardized controls, trained 3,000+ users.
- Team Lead – Internal Controls & Payments – Reduced admin workload 80%, automated expense processes.
- Analyst – Corporate Cards & Accounts Payable – Improved cycle time, reduced rework 60%.
Education
MBA - Finance
IBMEC
Postgraduate - IT Management
IBMEC
BBA - Business Administration
PUC Paraná
Skills
- Category Strategy & Portfolio Management
- Strategic Sourcing, RFP/RFQ, TCO & Should-Cost Modeling
- Supplier Relationship Management (SRM) & Contract Performance
- Commercial Negotiation & Value Engineering
- Market Intelligence, Benchmarking & Cost Analysis
- Dynamic Discounting / Early Pay / Working Capital Optimization
- Tail-Spend Reduction & Purchasing Channel Strategy
- Spend Analytics, Forecasting & Savings Governance
- S&OP Integration for Commercial Decision-Making
- Executive Stakeholder Management (C-Suite, VPs, Commercial, Manufacturing)
- Scheduling optimization
- Teamwork orientation
- Production planning
- Demand forecasting
- SAP FI/CO/MM Oracle Power BI Tableau IBP APO
Websites
Certification
- Global Oil & Gas Management Program – Thunderbird
- Enterprise Leadership Program – UNC
COMMERCIAL & PROCUREMENT IMPACT HIGHLIGHTS
- 50% reduction in low-value transaction cost via channel and marketplace strategy.
- Delivered multi-million-dollar savings through sourcing redesign & supplier negotiations.
- Improved supplier performance and global financial governance.
- Built category analytics platforms accelerating sourcing decisions.
- Led global dynamic discounting → major cash flow & cost benefits.
- Enhanced negotiation leverage via S&OP-driven supply & risk visibility.
Languages
English
Native or Bilingual
Spanish
Native or Bilingual
French
Professional Working
Portuguese
Native or Bilingual
Timeline
Global Supply Planner – Synthetics (S&OP / Commercial Planning)
ExxonMobil
05.2025 - Current
Global Supply Chain Financial Planning & Stewardship Manager
ExxonMobil
04.2023 - 05.2025
Manager, Financial Planning & Stewardship – Procurement
ExxonMobil
11.2019 - 04.2023
Manager, Customer Support & Internal Controls (Procurement Operations)
ExxonMobil
06.2018 - 11.2019
Special Projects Manager – Purchasing (Procurement Transformation)
ExxonMobil
05.2016 - 06.2018
Supervisor – Cards Controls, Vendor Master, Payables
ExxonMobil
01.2005 - 01.2016
Postgraduate - IT Management
IBMEC
BBA - Business Administration
PUC Paraná
MBA - Finance
IBMEC