Afonso Guimaraes

R2R Business Transformation Lead Marathon Oil

Afonso Guimarães is a visionary leader in finance, recognized globally for his expertise in Record to Report operations and digital finance transformation. With over 20 years of experience at industry giants like ExxonMobil and Marathon Oil, Afonso has built a reputation as a trusted leader and advisor, bridging the gap between finance and technical teams to drive high-impact system and process improvements. His work has enabled finance organizations around the world to scale efficiently—boosting accuracy, compliance, and operational agility. Afonso specializes in ERP platforms such as SAP and cutting-edge finance cloud tools like BlackLine, with deep proficiency in automation, RPA, and Gen AI integration. His ability to turn complex digital strategies into practical solutions has made him a key resource for executives and cross-functional teams across the Americas, Europe, Africa, and Asia. Beyond his technical acumen, Afonso is known for developing impactful training programs and global finance guidelines, elevating Oil & Gas accounting and controls standards across the industry. His academic background includes an MBA from Webster University and a Professional Certificate in Digital Transformation from MIT. Committed to innovation and sustainability, Afonso also serves as a volunteer Project Advisor for the Blockchain for Energy consortium (B4E), where he leads initiatives on blockchain applications for AFE/Ballot processes and Joint Interest Billing. Fluent in multiple languages and fluent in the language of transformation, Afonso continues to shape the future of finance—where strategic vision meets operational excellence.