SIZ Service GmbH provides technical services in the information and communications technology sector primarily for companies of the German Sparkassen financial group. Its main business areas are fixed-line and mobile telephony services as well as claims settlement including management of co-branding claims pools and the DSGV liability fund. The company is a 100% subsidiary of SIZ GmbH, uses personnel and operating equipment of the parent under a service agreement and employed on average two staff members in 2024. In the 2024 financial year it reported revenues of 12,941.7 T€ and a net profit of 200.8 T€.
die Erbringung von technischen Dienstleistungen, insbesondere im Umfeld der Informations- und Kommunikationstechnik, insbesondere für Unternehmen der deutschen Sparkassen-Finanzgruppe.
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Source: German Commercial Register (Handelsregister) Bonn Local Court, HRB 16793 (as of 25 September 2026)
Source: German Commercial Register (Handelsregister) Bonn Local Court, HRB 16793 (as of 25 September 2026)
Source: German Commercial Register (Handelsregister) Bonn Local Court, HRB 16793 (as of 25 September 2026)
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Source: German Commercial Register (Handelsregister) Bonn Local Court, HRB 16793 (as of 25 September 2026)
Akrisios Grundstücksverwaltungsgesellschaft Nr. 2 mbH
Mainz · Bausparkassen
PROSERVICE Dienstleistungsgesellschaft mbH (PROSERVICE DL GmbH)
Sankt Augustin · Kreditbanken einschließlich Zweigstellen ausländischer Banken
S-Servicepartner Personalservice GmbH
Münster · Kreditbanken einschließlich Zweigstellen ausländischer Banken
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