AeroLeads people directory · profile
Markus Sieber Email & Phone Number
Gesellschafter
at
SPIRIT/21
LinkedIn matched
✓ Verified August 2026
3 data sources
Profile completeness 100%
Current company
Role
Gesellschafter
Location
Böblingen, Baden-württemberg, Germany
Company size
Who is Markus Sieber? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Markus Sieber is listed as Gesellschafter at SPIRIT/21, a with 336 employees, based in Böblingen, Baden-württemberg, Germany. AeroLeads shows a matched LinkedIn profile for Markus Sieber.
Markus Sieber previously worked as Mitglied des Beirats at Spirit/21 Gmbh and Vorsitzender der Geschäftsführung at Spirit/21 Gmbh. Markus Sieber holds Realschulabschluss from Böblingen Kaufmännisches Schulzentrum.
Company email context
Email format at SPIRIT/21
This section adds company-level context without repeating Markus Sieber's masked contact details.
SPIRIT/21
Review company-level records connected to Markus Sieber before choosing the right outreach path.
Profile bio
About Markus Sieber
Kleiner Einblick in meine Persönlichkeit, in kurzen Stichworten. Mehr Zeit verbleibt dem geneigten Leser wahrscheinlich eher nicht. Führen von Teams und Organisationen ist meine LeidenschaftWertschätzung und Nachhaltigkeit sind keine leeren Worte, sondern werden jeden Tag gelebtFehler machen ist nicht schlimm, sie zu verleugnen oder abzustrafen schonEin Auslandsaufenthalt über 2 1/2 Jahre in Irland hat mir persönlich sehr geholfen eine Perspektive für andere Kulturen zu erleben, auch zu lernen und zu verstehen wie differenziert zu uns in DE manche Themen erfolgreich angegangen werden Life Balance ist kein Schlagwort, sondern verkörpert die ethische Entwicklung unserer Kultur
Listed skills include It Strategie, It Service Managment, It Management, Outsourcing, and 18 others.
Current workplace
Markus Sieber's current company
Company context helps verify the profile and gives searchers a useful next step.
Spirit/21
4 roles
Markus Sieber work experience
A career timeline built from the work history available for this profile.
Mitglied Des Beirats
Current
Jan 2022 - Present
Vorsitzender Der Geschäftsführung
Business Development & Strategie Consulting Entwicklen neuer Geschäftsmöglichkeiten
Sep 2014 - Jan 2022
Mitglied Izf - Initiative Zukunftsfähige Führung
Current
Izf Initiative Zukunftsfähige Führung E.V.
Jan 2022 - Present
Team & coworkers
Colleagues at SPIRIT/21
Other employees you can reach at spirit21.com. View company contacts for 336 employees →
PV
Pavel Vorobiev
Colleague at Spirit/21Krefeld, North Rhine-Westphalia, Germany
View →
TM
Thoralf Martin
Colleague at Spirit/21Germany
View →
DK
Daniel Klein
Colleague at Spirit/21Nordheim, Baden-Württemberg, Germany
View →
UI
Ursula Ilg
Colleague at Spirit/21Böblingen, Baden-Württemberg, Germany
View →
SV
Simone Vollert
Colleague at Spirit/21Schweinfurt, Bavaria, Germany
View →
JG
Jonas Götz
Colleague at Spirit/21Stuttgart, Baden-Württemberg, Germany
View →
SL
Serge Laroche
Colleague at Spirit/21Mannheim, Baden-Württemberg, Germany
View →
MH
Martin Häußler
Colleague at Spirit/21Holzgerlingen, Baden-Württemberg, Germany
View →
YW
Yvonne Wiesentheit
Colleague at Spirit/21Flechtorf, Lower Saxony, Germany
View →
UB
Udo Balkenhol
Colleague at Spirit/21Böblingen, Baden-Württemberg, Germany
View →
Pavel Vorobiev
Colleague at Spirit/21Krefeld, North Rhine-Westphalia, Germany
View →
TM
Thoralf Martin
Colleague at Spirit/21Germany
View →
DK
Daniel Klein
Colleague at Spirit/21Nordheim, Baden-Württemberg, Germany
View →
UI
Ursula Ilg
Colleague at Spirit/21Böblingen, Baden-Württemberg, Germany
View →
SV
Simone Vollert
Colleague at Spirit/21Schweinfurt, Bavaria, Germany
View →
JG
Jonas Götz
Colleague at Spirit/21Stuttgart, Baden-Württemberg, Germany
View →
SL
Serge Laroche
Colleague at Spirit/21Mannheim, Baden-Württemberg, Germany
View →
MH
Martin Häußler
Colleague at Spirit/21Holzgerlingen, Baden-Württemberg, Germany
View →
YW
Yvonne Wiesentheit
Colleague at Spirit/21Flechtorf, Lower Saxony, Germany
View →
UB
Udo Balkenhol
Colleague at Spirit/21Böblingen, Baden-Württemberg, Germany
View →
1 education record
Markus Sieber education
-
Böblingen Kaufmännisches Schulzentrum
FAQ
Frequently asked questions about Markus Sieber
Quick answers generated from the profile data available on this page.
What company does Markus Sieber work for?
Markus Sieber works for SPIRIT/21.
What is Markus Sieber's role at SPIRIT/21?
Markus Sieber is listed as Gesellschafter at SPIRIT/21.
Where is Markus Sieber based?
Markus Sieber is based in Böblingen, Baden-württemberg, Germany while working with SPIRIT/21.
What companies has Markus Sieber worked for?
Markus Sieber has worked for Spirit/21, Spirit/21 Gmbh, and Izf Initiative Zukunftsfähige Führung E.V..
Who are Markus Sieber's colleagues at SPIRIT/21?
Markus Sieber's colleagues at SPIRIT/21 include Pavel Vorobiev, Thoralf Martin, Daniel Klein, Ursula Ilg, and Simone Vollert.
How can I contact Markus Sieber?
You can use AeroLeads to view verified contact signals for Markus Sieber at SPIRIT/21, including work email, phone, and LinkedIn data when available.
What schools did Markus Sieber attend?
Markus Sieber holds Realschulabschluss from Böblingen Kaufmännisches Schulzentrum.
What skills is Markus Sieber known for?
Markus Sieber is listed with skills including It Strategie, It Service Managment, It Management, Outsourcing, Cloud Computing, It Outsourcing, Integration, and Presales.
Find 750M verified contacts
Search by job title, company, industry, location, and seniority. Export verified B2B contact data when you need it.
Start free trialPeople with similar names
Check these profiles if this is not the Markus Sieber you were looking for.
View similar profiles
