Christoph Diener - Auditing & Advisory (last 16 months)

Q: Where is Christoph based?

Christoph is based in Cologne, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Christoph speak?

Christoph speaks the following languages: German (Advanced) .

Q: How many years of experience does Christoph have?

Christoph has at least 15 years of experience. During this time, Christoph has worked in at least 5 different roles and for 5 different companies . The average length of individual experience is 3 years and 11 months . Note that Christoph may not have shared all experience and actually has more experience.

Q: What is Christoph's latest experience?

Christoph's most recent position is Lecturer & Technical Author at AUDfIT Deutschland GmbH .

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

In recent years, Christoph has worked for AUDfIT Deutschland GmbH , iba | University of Cooperative Education , NACHHALTIGKEITSPIONIERE Wirtschaftsprüfer , and KONLUS GmbH Wirtschaftsprüfungsgesellschaft Steuerberatungsgesellschaft .

Q: Which industries is Christoph most experienced in?

Christoph is most experienced in industries like Professional Services and Education .

Q: Which business areas is Christoph most experienced in?

Christoph is most experienced in business areas like Accounting , Audit , and Finance . Christoph also has some experience in Sustainability Management .

Q: Which industries has Christoph worked in recently?

Christoph has recently worked in industries like Professional Services and Education .

Q: Which business areas has Christoph worked in recently?

Christoph has recently worked in business areas like Accounting , Audit , and Finance .

Recommended expert

Cologne, Germany

Check rate

Experience

Nov 2024 - Present

1 year 10 months

Germany

Lecturer & Technical Author

AUDfIT Deutschland GmbH

Training auditors with a focus on the German Commercial Code (HGB) and financial statement audits (JAP)
Professional training on auditing and preparing financial statements
Author of technical content and articles on sustainability reporting (CSRD, ESRS, VSME)
Linking traditional audits with current ESG topics

Nov 2024 - Present

1 year 10 months

Cologne, Germany

Adjunct Lecturer in IFRS and HGB Accounting

iba | University of Cooperative Education

Teaching in accounting, sustainability reporting & auditing
Practical teaching of complex topics with a focus on HGB, IFRS, CSRD and ESRS
Development of modern, well-structured teaching materials
Integration of current case studies from my own consulting practice
Preparing students for professional practice

Oct 2024 - Present

1 year 11 months

Cologne, Germany

Founder | Auditor | Interim Manager | Sustainability Manager | Group Accounting & IFRS

NACHHALTIGKEITSPIONIERE Wirtschaftsprüfer

Auditing and preparing annual and consolidated financial statements (HGB & IFRS)
Interim management in finance and sustainability for mid-sized companies
Sustainability audits & reporting according to ESRS, VSME, GRI, DNK
Strategic consulting for sustainable corporate alignment & transformation
Interface between financial reporting & sustainability
Supporting companies in implementing the CSRD

Oct 2017 - Sep 2024

7 years

Cologne, Germany

Auditor | German CPA | Authorized Signatory | Management Consultant

KONLUS GmbH Wirtschaftsprüfungsgesellschaft Steuerberatungsgesellschaft

Auditing mid-sized corporations
Consulting for mid-sized companies
Business valuation
Reviewing and preparing management reports & non-financial statements
Team leadership
Responsibility for the auditing area
Fee negotiations
Tendering processes

Nov 2011 - Sep 2017

5 years 11 months

Düsseldorf, Germany

Senior Auditor

PwC

Annual financial statement audits
Business consulting
PIE companies
Telecommunications
Logistics
DAX 30
IFRS
HGB
US GAAP
Waste management
Financial reporting

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Professional Services and Education.

Professional Services

Education

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Accounting, Audit, Finance, and Sustainability Management.

Accounting

Audit

Finance

Sustainability Management

Skills

Schulung
Bilanzen

Languages

German

Advanced

Statistics

Experience

Total positions 5

Experience in Professional Services 15 y

Avg length 3 y 7 m

Longest experience 6 y 11 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Lecturer & Technical Author, Adjunct Lecturer in IFRS and HGB Accounting, Founder | Auditor | Interim Manager | Sustainability Manager | Group Accounting & IFRS

Main industries Professional Services, Education

Main business areas Accounting, Audit, Finance

Profile

Created

December 2025

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

Have questions? Find more information here.

Christoph is based in Cologne, Germany and can operate in on-site, hybrid, and remote work models.

Christoph speaks the following languages: German (Advanced).

Christoph has at least 15 years of experience. During this time, Christoph has worked in at least 5 different roles and for 5 different companies. The average length of individual experience is 3 years and 11 months. Note that Christoph may not have shared all experience and actually has more experience.

Based on recent experience, Christoph would be well-suited for roles such as: Lecturer & Technical Author, Adjunct Lecturer in IFRS and HGB Accounting, Founder | Auditor | Interim Manager | Sustainability Manager | Group Accounting & IFRS.

Christoph's most recent position is Lecturer & Technical Author at AUDfIT Deutschland GmbH.

In recent years, Christoph has worked for AUDfIT Deutschland GmbH, iba | University of Cooperative Education, NACHHALTIGKEITSPIONIERE Wirtschaftsprüfer, and KONLUS GmbH Wirtschaftsprüfungsgesellschaft Steuerberatungsgesellschaft.

Christoph is most experienced in industries like Professional Services and Education.

Christoph is most experienced in business areas like Accounting, Audit, and Finance. Christoph also has some experience in Sustainability Management.

Christoph has recently worked in industries like Professional Services and Education.

Christoph has recently worked in business areas like Accounting, Audit, and Finance.

Christoph is immediately available part-time for suitable projects.

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

To hire Christoph, click the Meet button on the profile to request a meeting and discuss your project needs.

Salary / Daily Rate Distribution

0 1 2 3 4

<€480 €480-640 €640-800 €800-960 €960+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

1000

750

500

250

Daily rate avg. 832 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000

750

500

250

Median rate 840 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.