Detlef Winkler
Mainz
Summary
Experienced finance and accounting manager with over 20 years of expertise in international companies. Specializes in corporate financial reporting, consolidation according to HGB and Swiss-HGB, controlling, and team leadership. Successfully implements financial and project controlling to optimize cost analyses, serves as a knowledgeable point of contact for auditors and tax advisors. Skilled in tax and social security audits to minimize legal risks. Goal-oriented, analytically strong, committed to optimizing financial processes and sharing knowledge.
Overview
49
49
years of professional experience
Work History
Finance and Accounting Manager
valantic Transaction Solutions GmbH
09.2018 - Current
- Leading a team of 4 employees to optimize work performance and achieve company goals.
- Managing 5 countries to ensure consistent and legally compliant financial practices.
- Successfully consolidating financial statements according to HGB to ensure accurate financial reporting.
- Implementing financial and project controlling to optimize costs and profit analyses.
- Acting as an effective point of contact for auditors and tax advisors to ensure compliant audits.
- Responsible for tax and social security audits to minimize legal risks.
Finance and Accounting Manager
Computer Services Kaisha GmbH
11.2001 - 08.2018
- Leading a team of 8 employees to optimize work performance and achieve company goals.
- Managing 6 countries to ensure consistent and legally compliant financial practices.
- Successfully consolidating financial statements according to HGB and Swiss-HGB to ensure accurate financial reporting.
- Implementing financial and project controlling to optimize costs and profit analyses.
- Acting as an effective point of contact for auditors and tax advisors to ensure compliant audits.
- Integrating new operational sites to expand business activities and optimize processes.
- Preparing corporate tax returns to ensure legal compliance and optimize tax strategies.
- Responsible for tax and social security audits to minimize legal risks.
Finance and Accounting Manager
eLoyalty (Deutschland) GmbH
06.2000 - 10.2001
- Supervision of the entire ongoing accounting process to ensure accuracy and compliance with legal requirements.
- Successful establishment of project controlling to optimize project costs and profit analyses.
- Implementation of comprehensive financial controlling to enhance financial transparency and efficiency.
- Preparation and consolidation of annual financial statements according to HGB and US-GAAP for accurate financial reporting.
- Reporting to the group branch in London and the corporate headquarters in the USA for clear and timely communication.
Senior Accountant
Fire AG
06.1999 - 05.2000
- Creating a stable career path by converting temporary agency work into a permanent position.
- Effectively utilizing skills and experience to secure a permanent employment within the company.
Senior Tax Assistant
RTA Steuerberatung AG
11.1998 - 05.1999
- Leading a team of four tax clerks to ensure accurate bookkeeping and tax returns.
- Overseeing the preparation of private and corporate tax declarations with final review by a tax advisor.
- Preparing and drafting legal remedies to support the tax advisor.
- Optimizing accounting processes to ensure compliant financial reports.
- Efficiently coordinating team efforts to achieve company goals.
Professional leave to prepare for the tax advisor examination.
Privat
06.1998 - 10.1998
Senior Tax Assistant
REGINA Treuhand StB GmbH
01.1997 - 05.1998
- Conducting annual financial statement audits for non-profit associations with commercial activities.
- Preparing corporate tax returns to ensure compliance with legal requirements.
- Preparing personal tax returns to optimize individual tax strategies.
Professional career break
Privat
10.1996 - 12.1996
Tax Assistant / Audit Assistant
Habetreu & Partner M.B.H.
08.1994 - 09.1996
- Conducting annual financial statement audits for non-profit associations and hospitals.
- Preparing corporate tax returns to ensure compliance with legal requirements.
- Optimizing individual tax strategies through the preparation of personal tax returns.
Audit Assistant
Bastian und Eichhorn
10.1993 - 07.1994
- Leading annual financial statement audits for non-profit organizations and hospitals to ensure accurate financial reporting.
- Preparing corporate tax returns to meet legal requirements.
- Optimizing personal tax returns to support individual tax strategies.
Head of the Tax Department
Steinke, Senger, Haas. Kaufmann & Partner
01.1993 - 09.1993
- Leading annual financial statement audits for non-profit organizations and hospitals to ensure accurate financial reporting.
- Preparing corporate tax returns to comply with legal requirements and optimize tax strategies.
- Developing private tax returns to maximize individual tax strategies.
- Managing and successfully handling a tax criminal procedure to minimize legal risks.
Audit Assistant
BDO
10.1992 - 12.1992
- Conducting annual financial statement audits for municipal utility companies to ensure accurate financial reporting.
- Preparing comprehensive financial reports for commercial enterprises to enhance financial transparency.
- Coordinating audit processes to ensure accurate and compliant financial statements.
- Efficiently overseeing financial audits to support corporate objectives and optimize financial strategies.
Audit Assistant
BDO Dr. Gerling, Klöcker und Pago
05.1991 - 09.1992
- Conducting annual financial statement audits for municipal utility companies to ensure accurate financial reports.
- Preparing business evaluations, such as for zoological gardens, to optimize operational strategies.
- Supporting the reorganization of internal processes for clients during and after the annual audit.
- Promoting financial transparency through comprehensive audit analyses and reporting.
- Efficiently coordinating audit processes to ensure compliance with legal requirements.
Administrative Officer
Bundesknappschaft
02.1982 - 10.1982
- Careful review of incoming invoices for factual and mathematical accuracy to ensure error-free bookings.
- Effective support of social insurance officers with administrative tasks to optimize the workflow.
Professional career break
Privat
10.1980 - 01.1982
- Successful organization of the A-level preparation at the evening gymnasium in Lippstadt.
- Development of efficient learning strategies to improve exam performance.
- Creation of comprehensive study plans to ensure exam goals are met.
- Maximization of study time through effective self-discipline.
- Optimization of exam preparation through continuous progress monitoring.
Administrative Officer
Bundesknappschaft
10.1979 - 09.1980
- Careful review of incoming invoices for factual and mathematical accuracy to ensure error-free bookings.
- Effective support of social insurance officers with administrative tasks to optimize the workflow.
Commercial Clerk
CDU-Fraktion
04.1979 - 09.1979
- Efficient administrative support during the mayoral election campaign to ensure smooth operations and effective communication.
Career reorientation
Privat
02.1979 - 03.1979
- Career reorientation
Apprenticeship as an industrial clerk
Siegfried Leithäuser
08.1976 - 01.1979
- Graduated with excellent results from training as an industrial clerk, demonstrating a comprehensive understanding of company operations.
- Successfully applied theoretical knowledge in practice through effective collaboration across various departments.
- Developed skills in analyzing and optimizing business processes during the training.
- Actively supported the creation of company reports and financial analyses.
- Successfully carried out projects aimed at improving operational efficiency.
Education
Diploma - Business Economics
University of Applied Sciences
01.1991
No degree - Economics
Westfälische Wilhelms Universität
01.1989
Allgemeine Hochschulreife/ Abitur - undefined
Abendgymnasium Lippstadt
01.1981
Skills
- Consolidated financial statement
- Mergers & Acquisitions
- Tax
- Budgeting
- Process optimisation
- Financial reporting
- Project management
Languages
English
Upper intermediate (B2)
Timeline
Finance and Accounting Manager
valantic Transaction Solutions GmbH
09.2018 - Current
Finance and Accounting Manager
Computer Services Kaisha GmbH
11.2001 - 08.2018
Finance and Accounting Manager
eLoyalty (Deutschland) GmbH
06.2000 - 10.2001
Senior Accountant
Fire AG
06.1999 - 05.2000
Senior Tax Assistant
RTA Steuerberatung AG
11.1998 - 05.1999
Professional leave to prepare for the tax advisor examination.
Privat
06.1998 - 10.1998
Senior Tax Assistant
REGINA Treuhand StB GmbH
01.1997 - 05.1998
Professional career break
Privat
10.1996 - 12.1996
Tax Assistant / Audit Assistant
Habetreu & Partner M.B.H.
08.1994 - 09.1996
Audit Assistant
Bastian und Eichhorn
10.1993 - 07.1994
Head of the Tax Department
Steinke, Senger, Haas. Kaufmann & Partner
01.1993 - 09.1993
Audit Assistant
BDO
10.1992 - 12.1992
Audit Assistant
BDO Dr. Gerling, Klöcker und Pago
05.1991 - 09.1992
Administrative Officer
Bundesknappschaft
02.1982 - 10.1982
Professional career break
Privat
10.1980 - 01.1982
Administrative Officer
Bundesknappschaft
10.1979 - 09.1980
Commercial Clerk
CDU-Fraktion
04.1979 - 09.1979
Career reorientation
Privat
02.1979 - 03.1979
Apprenticeship as an industrial clerk
Siegfried Leithäuser
08.1976 - 01.1979
No degree - Economics
Westfälische Wilhelms Universität
Allgemeine Hochschulreife/ Abitur - undefined
Abendgymnasium Lippstadt
Diploma - Business Economics
University of Applied Sciences
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