Stephan Simmang in

Stephan Simmang

Login to view DISC.
Group CIO at Boerse Stuttgart Group
📍 Stuttgart, Baden-Württemberg, Germany

Stephan Simmang is the Group CIO at Boerse Stuttgart Group, leveraging deep expertise from his tenure as CTO and interim Co-CEO at flatexDEGIRO and nearly two decades in leadership at Goldman Sachs. An alumnus of RWTH Aachen University, he has a distinguished career spearheading technological strategy in the European financial industry.

He believes AI is not an IT topic but a business topic, requiring integrated teams of developers and business staff to master its challenges and unlock opportunities.

Read the full overview →
Experience
32 Years
Current Role
Group CIO
Job Level
Leadership
Location
Stuttgart, Baden-Württemberg, Germany
Personality Overview

How Stephan shows up

Communication Style
Decision Approach
Work Preference

Behavioral traits and communication patterns that shape how this person evaluates opportunities, builds trust, and makes decisions in professional settings.

Login to view personality overview.
Priorities

Topics Stephan cares about

AI in Finance
He is a public speaker on AI's role in finance, advocating that it is a core business topic essential for driving innovation and creating new opportunities.
Fintech Innovation
His career focus has been on driving "innovative change." He was instrumental in building a German fintech into one of Europe's leading online brokers.
+4 more topics Login to view topics
Career

Work history

8-2025
Group CIO
Boerse Stuttgart Group
4-2024 - 7-2025
CTO (& interim Co-CEO)
flatex AG
11-2020 - 8-2025
CTO
flatexDEGIRO AG
6-2016 - 7-2025
Group CTO, Divisional Board Member
flatex AG
1-2007 - 6-2016
Executive Director Banking Divisional Systems
Goldman, Sachs AG
In the press

Media appearances

Boerse Stuttgart Group setzt strategische Neuaufstellung des Managements fort. Featured in Presseportal
See now
Neue Führungsriege: Stephan Simmang wird neuer CIO der Boerse Stuttgart Group. Featured in IT Finanzmagazin
+4 more appearances Login to view media
Education
Masters
RWTH Aachen University
Social presence
in
Behavioral profile

DISC profile (public)

DISC behavioral profile

Dominance, influence, steadiness, and calculativeness scores with guidance on how this person prefers to communicate and decide.

Login to view DISC.

More profiles

Discover additional public profiles from our index.

DS
devendra sahu
btech
Tata Consultancy Services
 Gijs Spijkers
Gijs Spijkers
Director IT Strategy & Governance (ad interim)
Coöperatie VGZ
 Phil L.
Phil L.
Chief Information Officer
Domestic & General
SD
Shivram Dalvi
Manager
Tata Consultancy Services
Unlock the full playbookSee exactly how to sell to Stephan. Free, 10 seconds.