Protected: Harco Jellema
Password Protected
To view this protected post, enter the password below:
Protected: Laszlo Ban
Password Protected
To view this protected post, enter the password below:
Heiko Rockenberger
Heiko Rockenberger
Senior Program Lead
- 10+ years of high expertise in leadership in complex SAP S/4HANA transformation programs, accountable for Business Readiness, Change, Communication & Training (CCT) streams
-
Extensive experience collaborating with global system integrators, particularly Accenture, ensuring alignment between client-side governance and SI delivery structures
-
Strong capability in steering Business Readiness within multi-vendor ERP landscapes, including integration with Accenture-led SAP Activate delivery frameworks
-
Executive-level stakeholder management, steering committee advisory, and risk & escalation governance in large-scale international ERP programs
-
Strong expertise in implementation of Digital Adoption Platforms (DAP) and structured training governance to ensure measurable user adoption and sustainable transformation impact
Last 3 projects
| since 2023 | Energy & Utilities (International Group) | Organizational Change Management Consultant – SAP S/4HANA & DAP Transformation (in collaboration with Accenture as implementation partner) |
| 10/2021 – 12/2022 | Automotive / Manufacturing (Special Vehicles) | Program Coordinator & Change Lead – SAP S/4HANA Public Cloud & Salesforce Transformation (multi-vendor environment incl. Accenture) |
| 09/2018 – 08/2021 | Energy, Waste & Water (International Group) | Head of Change Management & PMO – SAP S/4HANA Single Tenant Cloud Implementation (interface to Accenture delivery teams) |
Tools
Competencies
- Business Readiness Leadership in SAP S/4HANA Enterprise Transformations
- Client-Side Governance & System Integrator Alignment (incl. Accenture collaboration)
- Executive Stakeholder & Steering Committee Management in Multi-Vendor Programs
- Organizational Design & Target Operating Model Implementation
Languages
- German (Native)
- English (Fluent)
Attila Hejja
Attila Héjja
Senior SAP S/4HANA Project Manager
-
Experienced SAP S/4HANA Project Manager with strong expertise in leading complex end-to-end implementation and transformation programs across multiple SAP modules (FI, CO, SD, PUR, PP, QM, SM, eEWM, IM) and third-party integrations (Salesforce, DWH/PBI, Nexon).
-
Proven ability to manage cross-functional teams, project timelines, budgets, testing cycles, cutover activities, and stakeholder alignment throughout full project lifecycles.
-
Strong background in people leadership and organizational change, gained through leading software teams, business transformation programs, and large service organizations.
-
Skilled in process optimization, system integration, risk management, and change management, ensuring scalable and sustainable long-term SAP solutions.
-
Over 15 years of professional experience across engineering, operations management, business transformation, and IT project delivery, including full P&L responsibility and management of teams up to 75 people.
Last 3 projects
| 2024 – 2025 | Electronics / Manufacturing | SAP S/4HANA Project Manager – Led full SAP S/4HANA implementation; coordinated 9 cross-functional teams; managed budget, timeline, testing, training, cutover; ensured on-time go-live despite heavy workload; integrated Salesforce, DWH/PBI, and Nexon. |
| 2022 – 2024 | Electronics / Software | Agile People Manager – Led agile software teams; improved cross-department collaboration; focused on team performance, leadership coaching, and organizational transformation. |
| 2028 – 2021 | Industrial / Engineering Services | Project and Operations Manager – Managed entire service organization; led 75 people; full P&L ownership; improved workflows, team culture, safety, competency development, and customer satisfaction |
Tools
Competencies
- SAP Project Management & S/4HANA Implementation
- Cross-functional Leadership & Stakeholder Management
- Change Management & Organizational Transformation
- Advanced SAP Analytics & Automation
Languages
- Hungarian
- English
- German
Recent Comments