Matthias Siller in

Matthias Siller

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Head of Information Security at REWE digital
📍 Wiener Neudorf, Lower Austria, Austria

With over 27 years of IT experience, Matthias Siller is the IT Director Technology at REWE International AG, where he leads the technology cluster, including operations, architecture, and cloud platforms. He is also the Head of Information Security for REWE digital. He holds a Masters degree from the University of Vienna.

His dual leadership role, overseeing both broad IT technology and specialized information security for a major international retailer, is a unique aspect of his career.

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Experience
26 Years
Current Role
Head of Information Security
Job Level
Mid-senior
Location
Wiener Neudorf, Lower Austria, Austria
Personality Overview

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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.

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Priorities

Topics Matthias cares about

IT Transformation
He recently highlighted successfully driving the company's transformation forward in 2024 and is preparing for an equally intensive 2025.
Information Security
As the Head of Information Security for REWE digital, this is one of his primary responsibilities and core competencies.
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Career

Work history

8-2025
Head of Information Security
REWE digital
10-2022
IT Director Technology
REWE International AG
5-2021 - 5-2022
Head of Cloud Services Alpine
T-Systems Austria
5-2021 - 5-2022
Head of Cloud Services Alpine
T-Systems Schweiz
5-2020 - 9-2022
CTO
T-Systems Austria
In the press

Media appearances

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Education
2000 - 2008
Master
University of Vienna
1986 - 1994
AHS Matura
BG & BRG Ettenreichgasse, 1100 Vienna
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.

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