Mariusz Ustyjańczuk in

Mariusz Ustyjańczuk

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Partner - Defence Sector Leader Poland and Central Europe at Deloitte
📍 Warsaw, Mazowieckie, Poland

Mariusz Ustyjańczuk is the Defence Sector Leader for Deloitte in Central Europe, with deep expertise in risk advisory and technology. Educated at Harvard Business School and IESE Business School, he is a recognized practice builder and team leader focused on collaboration. Colleagues describe him as an "excellent professional" and a "star" in his field.

He has authored publications on Software Asset Management, focusing on cost savings through proper license control.

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Experience
17 Years
Current Role
Partner - Defence Sector Leader Poland and Central Europe
Job Level
Mid-senior
Location
Warsaw, Mazowieckie, Poland
Personality Overview

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Communication Style
Decision Approach
Work Preference

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Priorities

Topics Mariusz cares about

Defense & Security
As Deloitte's Defence Sector Leader, he frequently speaks on defense topics and attends major events like the Warsaw Security Forum.
Cyber Resilience
He is an active supporter of national cybersecurity initiatives, such as Poland's #CyberLegion, aimed at strengthening digital defenses.
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Career

Work history

10-2024
Partner - Defence Sector Leader Poland and Central Europe
Deloitte
6-2023 - 5-2024
Partner - Central Europe Risk Advisory Business Leader, Member of Executive Committee
Deloitte
6-2020 - 5-2023
Partner - Partner in Charge of Risk Advisory in Poland, Member of Management Committee
Deloitte
6-2019
Partner
Deloitte
9-2017 - 5-2019
Director - Risk Advisory
Deloitte
In the press

Media appearances

Mariusz Ustyjańczuk | Defense Sector Leader – Deloitte Central Europe. Featured in Deloitte
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The defence industry in Europe – EEC Panel (Speaker: Mariusz Ustyjańczuk, Partner – Defence Sector Leader, Deloitte). Featured in European Economic Chamber (EEC) Poland
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Education
1-2024 - 1-2024
Leading Professional Service Firms
Harvard Business School Executive Education
2018 - 2019
Advanced Management Program
IESE Business School
Social presence
in
Behavioral profile

DISC profile (public)

DISC behavioral profile

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