Stephan Ziefer
Senior Agile Program Manager & Lean Portfolio Manager @GMX, WEB.DE & mail.com
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WORK HISTORY
Senior Agile Program Manager & Lean Portfolio Manager @GMX, WEB.DE & mail.com
Karlsruhe, DE
EDUCATION
Balthasar Neumann Technikum
Information technology (IT)
ABOUT STEPHAN ZIEFER
I work at the intersection of strategy, governance and large-scale technology delivery, helping organizations turn complex transformation initiatives into sustainable platforms and operating models.Over the years, I have taken on different roles — from program and portfolio leadership to product ownership and delivery — building data platforms, IoT ecosystems and digital products in complex environments. My focus lies on aligning business strategy with engineering execution while creating clarity across organizational boundaries.In my current role at 1 & 1 Mail & Media, I collaborate closely with executive leadership to connect vision, portfolio governance and delivery execution. I contribute to enterprise-wide initiatives by enabling transparency, prioritization and pragmatic decision-making across product, architecture, legal and operations — especially within regulated data environments.What drives me is stabilizing complex delivery landscapes without slowing down innovation: aligning stakeholders, simplifying structures and enabling teams to move forward with ownership and trust.Always open to exchange ideas around enterprise transformation, platform thinking and system-oriented leadership.
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