Rüdiger Tiedemann - Senior Accounting Specialist

Q: Where is Rüdiger based?

Rüdiger is based in Cologne, Germany .

Q: What languages does Rüdiger speak?

Rüdiger speaks the following languages: German (Native), English (Advanced), French (Advanced), Spanish (Intermediate) .

Q: How many years of experience does Rüdiger have?

Rüdiger has at least 30 years of experience. During this time, Rüdiger has worked in at least 21 different roles and for 30 different companies . The average length of individual experience is 1 year . Note that Rüdiger may not have shared all experience and actually has more experience.

Q: What is Rüdiger's latest experience?

Rüdiger's most recent position is Senior Accounting Specialist at Alpha Trains Europa GmbH .

Q: What companies has Rüdiger worked for in recent years?

In recent years, Rüdiger has worked for Alpha Trains Europa GmbH , CMR CureDiab Metabolic Research GmbH , Macaw , Egon Zehnder AG , and Kaya & Kato GmbH .

Q: Which industries is Rüdiger most experienced in?

Rüdiger is most experienced in industries like Media, Entertainment and Publishing , Manufacturing , and Professional Services . Rüdiger also has some experience in Biotechnology , Information Technology (IT) , and Education .

Q: Which business areas is Rüdiger most experienced in?

Rüdiger is most experienced in business areas like Finance , Accounting , and Information Technology (IT) . Rüdiger also has some experience in Audit , Business Intelligence , and Human Resources (HR) .

Q: Which industries has Rüdiger worked in recently?

Rüdiger has recently worked in industries like Biotechnology , Information Technology (IT) , and Aerospace and Defense .

Q: Which business areas has Rüdiger worked in recently?

Rüdiger has recently worked in business areas like Finance , Accounting , Investments, and M&A & Venture Capital .

Recommended expert

Cologne, Germany

Experience

Nov 2024 - Feb 2025

4 months

Cologne, Germany

Senior Accounting Specialist

Alpha Trains Europa GmbH

Specialized topics like IFRS 9 / booking of complex syndicated loans
Accounting for two subsidiaries

Oct 2024 - Present

1 year 5 months

Düsseldorf, Germany

CFO / CMR

CMR CureDiab Metabolic Research GmbH

Part-time - finance & reporting - external accounting, fundraising

Nov 2023 - Sep 2024

11 months

Finance Manager / Senior Expert

Macaw

Preparing annual financial statements for previous years for three group companies
Process optimization in finance and performance
Ongoing accounting and administration, consolidation
Reporting with LucaNet and Power BI

Feb 2023 - Jun 2023

5 months

Zürich, Switzerland

Finance Consultant

Egon Zehnder AG

Process optimization in the finance function across various offices
Implementation of purchase orders

Jun 2022 - Jun 2022

1 month

Cologne, Germany

Consultant

Kaya & Kato GmbH

10-year financial planning including cash flow, details on margins by customer and product group etc. for negotiations with investors

Apr 2022 - Jan 2023

10 months

Bergisch Gladbach, Germany

CFO

Safran Data Systems GmbH

Fast close and reporting locally and to HQ in Paris
Migration of reporting tools from Hyperion to SQL
Internal Controls

Aug 2021 - Mar 2022

8 months

Aachen, Germany

Head of Accounting

next e.GO Mobile SE

Operational accounting
IFRS conversion
Introduction of internal control system and digitization of the P2P process, consolidation
IPO preparation

Mar 2021 - Feb 2022

1 year

Frankfurt, Germany

Head of Finance / CFO

T-Balance Therapeutics GmbH

Budgeting, cash management, reporting
Presentations and due diligence with potential investors

Oct 2020 - Jul 2021

10 months

Kiel, Germany

Head of Accounting/LCA

KVP Pharma + Veterinär GmbH

Local country accounting: responsible for accounting, reporting, and payments/treasury for the manufacturing company KVP in Kiel (EUR 250 million revenue, ~1,000 employees) as part of a carve-out from Bayer AG; supported two additional sites
SOX implementation
Optimization of key processes - P2C, O2C, R2R

Oct 2019 - Sep 2020

1 year

Frankfurt, Germany

Senior Expert Finance

Interxion GmbH

Fixed assets: accounting, reporting, capex approval process, IFRS 16, SOX, HFM reports
Process optimizations, including during the sale to Digital Realty

Aug 2019 - Sep 2019

2 months

Frankfurt, Germany

Senior Controlling Expert

Groupe SEB

Review billing terms for the past 3 years, about 15k line items, based on postings, invoices and contracts

Oct 2018 - Apr 2019

7 months

Idstein, Germany

Senior Finance & Controlling Expert

Jack Wolfskin

Controlling: investments, OPEX, CAPEX, forecasting, 1-3 year budgets, preparing reports for owners and management
Support group consolidation of 13 entities
IFRS 15 and IFRS 16, implementing Fast Close
Developing BI systems for sales controlling
Calculating purchase price differences during closing
Restructuring after acquisition by Callaway Golf, USA - switching sales reports including margin analysis, account and cost center mappings, changed P&L/balance sheet structure, reconciliations from IFRS to US GAAP
Preparing ERP rollout - MS Dynamics AX and SAP: processes, data structures, chart of accounts

Jun 2018 - Sep 2018

4 months

Munich, Germany

Co-CFO / Senior Finance Expert

New Flag GmbH

Finance and controlling projects including BI systems
Top-down group consolidation of 7 companies
Analyzing tax reports versus tax payments
Building P&L for products, sales channels, key accounts
Analyzing customer contracts, pricing and return agreements
Determining reclassifications for cost centers
Investment controlling: budget variances, postings by month and cost center

Aug 2016 - Jul 2018

2 years

Finance Manager

Crane XOMOX

France: finance and production controlling, etc., including full operational accounting, HR, payments and administration; setting up new suppliers and customers including payment terms, credit limits, credit analysis and monitoring, dunning
Export financing: creating and reviewing letters of credit etc. for sales to Africa, coordinating with sales on financing; weekly and monthly reporting to HQ in the USA, leading weekly meetings on quarterly figures including customer and margin analyses
Budgeting and forecasting with Hyperion HFM
Month-end and year-end closing with QAD and HFM
Lindau: setting up shared services for the French finance area, outsourcing payroll and taxes in France, installing accounting in Lindau, documenting/communicating process changes; periodically taking over Finance Manager duties
Both locations: SOX controls: analysis and updates, internal audits

Apr 2016 - Jul 2016

4 months

Bochum, Germany

Finance Manager

Harman Connected Services GmbH

Preparing and supporting audits for 2014 and 2015 financial statements as part of operational bridging
HR: monthly review of payroll, handling secondment of employees from India to Germany
Developing tax optimization strategies

Feb 2016 - Feb 2016

1 month

Lübeck, Germany

Finance Consultant

Erasco/Continental Foods GmbH

Analysis and optimization of sales processes / support for key accounts: campaign planning, support, sales controlling

Jun 2015 - Nov 2015

6 months

Münster, Germany

Interim Manager Treasury

COMPO Expert Gruppe

Established treasury in a carve-out after the sale of PE Triton to XIO, responsible for treasury planning across the whole group
Managed a syndicated loan in the hundreds of millions
Cash pooling
Established 13-week and medium-term liquidity planning
Introduced short-term factoring
Executed weekly payment runs in SAP
Controlling and financial planning, assisted with closings
Assisted with financial statements, consolidation, and annual audit
Negotiated new credit insurance

Apr 2015 - May 2015

2 months

Berlin, Germany

Consultant

Egmont Ehapa GmbH

Analysis and development of improvement potentials in outsourcing standard finance processes to India
Process optimization
Assisted in resolving legacy cases – accounts receivable, billing

Mar 2015 - Apr 2015

2 months

Hartha, Germany

Financial Controller

Trimas Germany GmbH

Operational finance management
Controlling and monthly reporting to head office including variance analysis
Month-end and year-end closings

Jan 2015 - Dec 2016

2 years

Cologne, Germany

Lecturer Finance/Controlling

Hochschulen Fresenius, ISM

Courses in IFRS and international controlling in German and English

Jan 2015 - Feb 2015

2 months

Cologne, Germany

Consultant

Unknown

Process optimization NAV 2013 / US-GAAP

Oct 2014 - Dec 2014

3 months

Berlin, Germany

Consultant

Unknown

Development of financing concepts – bonds, mezzanine, factoring, in collaboration with an audit firm

Apr 2014 - Sep 2014

6 months

Vienna, Austria

Finance Manager

DIC Europe GmbH

Payments / treasury, currency hedging
Expansion of production controlling for the new plant in Vienna
Optimization and automation of finance and administration processes
Implementation of fast close
Improvement of monthly/quarterly reporting to the sub-group headquarters in the USA
Integration of isolated Excel solutions into Navision
Compliance & SOX
Updating transfer pricing documentation in the group

Feb 2013 - Dec 2013

11 months

Braunschweig, Germany

Head of Controlling

Essilor GmbH

BI: development and roll-out of an integrated planning software with Cubeware Cockpit for sales to gross margin by customer and product
Management of corporate planning including presentations for the HQ
Selection, concept and roll-out of a sales reporting system with QlikView
Business partnering with sales, marketing, HR etc.: analysis of sales pipeline, CRM data, KPIs, restructuring
Production controlling
HR and supply chain controlling

Jan 2011 - Nov 2012

1 year 11 months

Mettmann, Germany

Commercial Director

TechnikService24 GmbH & Co. KG

Restructuring: ERP implementation, integration and migration of all key processes to MS Dynamics NAV
Cost and process optimization, among others in IT, HR, purchasing, using Six Sigma
Involvement in social plans / partial plant closures
Creation of business cases and negotiations with major customers – top trading companies and manufacturers
Preparation and execution of vendor due diligences
After insolvency, took over commercial management for the insolvency administrator, sale and winding-up

Feb 2010 - Jan 2011

1 year

Berlin, Germany

Head of Finance

Medici Arts b.v.

Cash management, ensuring liquidity – daily cash flow planning, creditor negotiations, sales pre-financing, M&A: vendor due diligences, sales negotiations
Audits, development and implementation of restructuring measures to maintain operations, supplier negotiations, rights transfers to Germany

Oct 2009 - Jan 2010

4 months

Ludwigshafen, Germany

Consultant

Pfalzwerke AG

Cost optimization in purchasing and fleet: analysis, identifying opportunities, presentation

Apr 2009 - Sep 2009

6 months

Cologne, Germany

Consultant

CROUZO

Web-based literature distribution: business plan, presentations

Oct 1996 - Mar 2009

12 years 6 months

Finance Director / Controller / Head of Controlling

TASCHEN GmbH

Set up group consolidation in MS Dynamics NAV
ERP implementation NAV: selection and migration from DOS system to NAV accounting and controlling at HQ; international roll-out including invoicing, HR, etc.
Financing & treasury: bank loans, ABS, project financing
Equity controlling including stores, audit trips
Concept and implementation of MIS, PPS, and CRM systems
M&A: acquisition and integration of a distribution company in Spain

Sep 1995 - Jul 1996

11 months

Berlin, Germany

Commercial Director

Bertelsmann / GrundyUfa TV Produktions GmbH

Commercial management
Optimization of marketing, merchandising & music production, setup of a contract database and budgeting, negotiations with licensees

Mar 1994 - Mar 1995

1 year 1 month

Düsseldorf, Germany

Consultant

Droege & Comp. Unternehmerberatung

Optimized business processes and reduced costs in multiple projects in the financial institutions, manufacturing and retail sectors – department stores, FMCG and convenience

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Media and Entertainment (14 years), Manufacturing (3.5 years), Biotechnology (2.5 years), Information Technology (2.5 years), Professional Services (2.5 years), and Education (2 years).

Media and Entertainment

Manufacturing

Biotechnology

Information Technology

Professional Services

Education

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Finance (28 years), Accounting (23 years), Information Technology (14.5 years), Audit (4 years), Business Intelligence (2.5 years), and Investments and M&A (2 years).

Finance

Accounting

Information Technology

Audit

Business Intelligence

Investments and M&A

Summary

Down-to-earth, hands-on, structured, action-oriented and team-oriented

Internationally experienced Finance & Administration manager and consultant with broad expertise: Accounting / consolidation, finance and treasury, M&A including PMI and carve-out, FP&A and controlling including factory controlling, change: restructuring / process optimization / change management, ERP implementation, IT project management, HR management and controlling, supply chain.

Industries: Automotive, chemicals, services, energy, FMCG, apparel, retail, aerospace, mechanical engineering, media, medical technology, pharmaceuticals, software / e-commerce.

Start-ups, mid-size companies / subsidiaries of corporations, up to EUR 25 billion in revenue

Skills

Group Financial Statements / Consolidation Under Hgb, Ifrs And Us-gaap With Up To 13 Legal Entities
Controlling In All Areas - Investments, Production, Sales, Marketing, Supply Chain, Hr
Finance And Treasury In International Groups: Syndicated Loans, Factoring, Abs, Interest And Currency Management, Hedging Up To Eur 20 Million, Liquidity Management
Change Management, Restructuring: Developing And Implementing Process Optimizations And Cost Reduction Programs Across All Business Areas As An Internal/external Consultant
M&a: Due Diligence, Company Acquisitions And Divestitures, Carve-out, Post-merger Integration
It: Developing And Internationally Rolling Out Bi And Other Systems For Accounting, Controlling, Procurement, Production, Sales And Hr - Specifications, Budget, Milestones, Controlling, Stakeholder Management, Roll-out
Hr Management For 250 Employees, Leading International Teams Of Up To 25 Employees/8 Direct Reports
Responsible For Purchasing With An Annual Volume Of Eur 10 Million
It Systems: Sap R/3 Fi/co, Oracle Netsuite, Ms Dynamics Nav And Ax, Datev, Sage, Infor M3, Siteline, Qad, Egecko, Psi Penta, Unit4, Magnitude, Blackline, Hfm Hyperion, Professional Planner, Lucanet, Workday, Cubeware, Qlikview, Ms Office

Languages

German

Native

English

Advanced

French

Advanced

Spanish

Intermediate

Education

Jun 1990 - Dec 1993

PhD in Economics · Economics · Cologne, Germany

Oct 1985 - May 1990

Universities of Münster and Cologne

Diploma in Business Administration · Business Administration · Cologne, Germany

Certifications & licenses

CINA Certificate In International Accounting: IFRS

Profile

Created

February 2025

Last Update

May 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Rüdiger based?

Rüdiger is based in Cologne, Germany.

What languages does Rüdiger speak?

Rüdiger speaks the following languages: German (Native), English (Advanced), French (Advanced), Spanish (Intermediate).

How many years of experience does Rüdiger have?

Rüdiger has at least 30 years of experience. During this time, Rüdiger has worked in at least 21 different roles and for 30 different companies. The average length of individual experience is 1 year. Note that Rüdiger may not have shared all experience and actually has more experience.

What roles would Rüdiger be best suited for?

Based on recent experience, Rüdiger would be well-suited for roles such as: Senior Accounting Specialist, CFO / CMR, Finance Manager / Senior Expert.

What is Rüdiger's latest experience?

Rüdiger's most recent position is Senior Accounting Specialist at Alpha Trains Europa GmbH.

What companies has Rüdiger worked for in recent years?

In recent years, Rüdiger has worked for Alpha Trains Europa GmbH, CMR CureDiab Metabolic Research GmbH, Macaw, Egon Zehnder AG, and Kaya & Kato GmbH.

Which industries is Rüdiger most experienced in?

Rüdiger is most experienced in industries like Media, Entertainment and Publishing, Manufacturing, and Professional Services. Rüdiger also has some experience in Biotechnology, Information Technology (IT), and Education.

Which business areas is Rüdiger most experienced in?

Rüdiger is most experienced in business areas like Finance, Accounting, and Information Technology (IT). Rüdiger also has some experience in Audit, Business Intelligence, and Human Resources (HR).

Which industries has Rüdiger worked in recently?

Rüdiger has recently worked in industries like Biotechnology, Information Technology (IT), and Aerospace and Defense.

Which business areas has Rüdiger worked in recently?

Rüdiger has recently worked in business areas like Finance, Accounting, Investments, and M&A & Venture Capital.

What is Rüdiger's education?

Rüdiger holds a Doctorate in Economics.

Does Rüdiger have any certificates?

Rüdiger has 1 certificate: CINA Certificate In International Accounting: IFRS.

What is the availability of Rüdiger?

Rüdiger is immediately available for suitable projects.

What is the rate of Rüdiger?

Rüdiger's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.