Matthias Hammen

Chief Executive Officer/Senior Consultant

Matthias is the CEO and Senior Enterprise Consultant at Credible Consulting, bringing more than 25 years of experience in CRM, ERP, and legacy system modernization. He specializes in Oracle Siebel, Microsoft Dynamics, Salesforce, SAP, and enterprise integrations, helping organizations modernize business-critical applications while ensuring operational continuity and long-term scalability.

Jessica Hammen-Nickl

Lead Corporate Identity & Design

Jessica leads Corporate Identity & Design at Credible Consulting, combining a strong background in social media, visual communication, and the arts to create a distinctive and consistent brand experience. From corporate branding to digital marketing assets, she helps transform ideas into compelling visual communication that reflects our values and connects with clients.

Patrick Schmitt

Sales & Marketing, Administration

Patrick is the Sales & Marketing Assistant at Credible Consulting, bringing more than 30 years of experience in sales, marketing, business development, and administration. He focuses on lead generation, digital marketing, customer engagement, and operational support, helping connect organizations with the right modernization and consulting solutions while ensuring smooth day-to-day business operations.

Stefan Huber

Senior Consultant

Stefan is a Senior SAP Consultant with over 20 years of experience in SAP Basis, SAP S/4HANA, SAP HANA, and enterprise system modernization. As a certified SAP specialist, project manager, trainer, and published SAP Press author, he helps organizations deliver secure, high-performing, and future-ready SAP environments.

Alexander Leider

Senior Consultant/Developer

Alexander is a Senior Software Developer with extensive experience in enterprise software development, Java technologies, and system integration. He helps organizations modernize business-critical applications by designing scalable backend solutions, integrating complex systems, and delivering reliable, high-performance enterprise software.

Lars Lenssen

Senior Consultant

Lars is a Senior Enterprise Consultant with expertise in SAP, enterprise architecture, cloud migration, and artificial intelligence. He brings extensive experience leading complex modernization projects, integrating enterprise systems, and delivering practical technology solutions that help organizations improve efficiency, scalability, and long-term business success.