Our committed staff comprises a team of more than 30 employees. The combination of substantiated theoretical knowledge and extensive practical experience forms the basis for competent advisory services. Our team leaders are therefore tax advisors who already have many years of audit and tax advisory experience under their belts. Many of our specialists have completed degrees in business administration.
Our employees stay current with the most recent legislative and legal developments through continuing education and training.
Matthias Bald
Diplom-Kaufmann
Bachelor of Science (computer science)
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Erika Brinkmann
Diplom-Kauffrau
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Katrin Bultmann
Diplom-Kauffrau
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Judith Maria Busse
Master of Science
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Peter Großekathöfer
Diplom-Betriebswirt (FH)
Auditor
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Gisbert Hansjürgens
Diplom-Kaufmann
Auditor
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Katrin Hering
Diplom-Kauffrau
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Dovile Kröker
Bachelor of Laws
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Marco Möllers
Diplom-Kaufmann
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Christine Pörtner
Master of Arts (International Business Studies)
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Janka Wesemann
Diplom-Volkswirtin
Auditor
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
Michael Wilmsmann
Diplom-Kaufmann
Tax advisor
CONCEPTAX Siekmann, Janell und Partner mbBHellerweg 2832052HerfordGermany
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