Sissi Rey, MBA
Verified Expert in Management Consulting
Management Consulting Expert
Orlando, FL, United States
Toptal member since June 6, 2024
Sissi has 12 years of international HR and management consulting experience. She is an expert in human capital consulting, project and change management, vendor selection, and global SAP and human resources information system (HRIS) implementations. She has worked for Coca-Cola, implementing S/4HANA for 5,000+ end users, utility company TVA in supply chain projects, and entertainment giant Endeavor, where she led the change effort in implementing P2P solutions. SIssi is a great leader and doer.
Career Highlights
Education Highlights
Certification Highlights
Case Studies
SAP S/4HANA Production Execution Implementation
Change Impact Assessment To Select Customer/Vendor and Contacting Tools
Implementation of Vendor/Customer Onboarding and Contract Lifecycle Management Solutions
Expertise
- Change Management
- Consulting
- Energy Utilities
- Global Strategy
- Human Capital Management
- Shared Service Centers
- Supply Chain
- Training & Training Content Development
Work Experience
Director of Change Management
Endeavor
- Headed a change workstream for procedure-to-pay (P2P) implementation of three best-of-breed solutions for vendor/customer onboarding and contract lifecycle management.
- Managed a team of employees and contractors. Created and implemented a change strategy.
- Oversaw SAP S/4HANA mobilization efforts in preparation for system upgrade. Created and delivered a training program on SAP Business Warehouse (BW) reporting for 200+ employees and established structured monthly office hours to sustain the change.
- Decommissioned an SAP Sales and Distribution (SAP SD) module to transition to the Financial Improvement and Audit Readiness (FIAR) methodology. Created and implemented change strategy communications and partnered with SAP to finalize training.
- Partnered with the compliance team to finalize, publish, train, and track a conflict of interest policy. Created a communication plan and training strategy to ensure all employees were aware and compliant with the new conflict of interest policy.
Manager | Change Management Consultant
Collective Insights
- Designed, developed, and executed the Global Deployment Change Management Playbook for a global SAP S/4HANA supply chain transformation at a Fortune 100 company that was applied in global plants and translated into multiple languages.
- Conducted change impact analysis and crafted discussion guides, readiness assessments, and global and local communication materials to facilitate user adoption and prepare for Day 1.
- Headed the creation and execution of a role-specific training plan, detailing the transition from current to future state across people, processes, and system changes for diverse functional areas.
- Created an interview guide and process used by 12 change consultants to capture all change and training requirements, halving the time needed to collect and standardize input.
Associate Consultant
ScottMadden
- Conducted an assessment of the supply chain network by visiting over 15 warehouses and interviewing 20+ personnel, resulting in a strategic proposal to senior executives for inventory optimization and cost reduction.
- Partnered with the client in the HRIS and implementation partner selection process for integrating two HR departments in a merger of public companies.
- Authored five requests for quote (RFQ) and requests for proposal (RFP) and conducted 15 reference calls, resulting in $5 million contracts.
- Project-managed the extension of 130+ (or 80%) wholesale contract extensions with local power companies to 20 years in six months, securing over $1 billion in additional lifetime revenue and aligning risks with the assets serving these contracts.
Workday Implementation Consultant
Mercer
- Implemented Workday for multiple clients specializing in HCM, talent and performance, and recruiting.
- Trained junior consultant on both technical skills and consulting competencies.
- Started post-production support team to support clients well past implementation.
Education
Master's Degree in Business Administration (MBA)
Esade Ramon Llull University - Barcelona, Spain
Bachelor's Degree in Industrial and Labor Relations
Cornell University - Ithaca, New York, United States
Certifications
Change Practicioner
Prosci
Skills
Geographic Expertise
European Union (EU)
Finance
Mergers & Acquisitions (M&A), Performance Reports
Other
Human Capital Management, Management, Change Management, Global Strategy, RFQ, Microsoft, Microsoft Office, Business Transformation, Transformational Leadership, Human Resources (HR), HR Transformation, Consulting, Energy Utilities, Shared Service Centers, Supply Chain, Projects, Training & Training Content Development, Workday, Vendor Selection, Vendor Management, Team Building, Global Team Management, Team Leadership, Onboarding, Performance Management, Reporting, Labor Contract Management, Organizational Change Management (OCM), International Affairs, Regulatory Affairs, Upstream Oil & Gas Management, Manufacturing, Climate Change, Analysis, Process Mapping, Change Leadership, Impact Analysis, Communication Strategy, SAP Implementation, Community Management, Teams, Communication, Procure to Pay, IT Projects, System Implementation, Employee Training, User Surveys, Impact Assessment, Workday Implementation, Talent Strategy, ADKAR Change Model, Change Impact Assessment
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