Mathias Gassert - Freelance Accounting and HR Consultant

Q: Where is Mathias based?

Mathias is based in Westerdeichstrich, Germany .

Q: What languages does Mathias speak?

Mathias speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Mathias have?

Mathias has at least 13 years of experience. During this time, Mathias has worked in at least 9 different roles and for 8 different companies . The average length of individual experience is 2 years and 6 months . Note that Mathias may not have shared all experience and actually has more experience.

Q: What is Mathias's latest experience?

Mathias's most recent position is Freelance Accounting and HR Consultant at Boowl Company GmbH .

Q: Which industries is Mathias most experienced in?

Mathias is most experienced in industries like Professional Services , Manufacturing , and Information Technology (IT) . Mathias also has some experience in Insurance and Energy .

Q: Which business areas is Mathias most experienced in?

Mathias is most experienced in business areas like Accounting , Information Technology (IT) , and Finance . Mathias also has some experience in Production/Manufacturing and Human Resources (HR) .

Q: What is Mathias's education?

Mathias attended Ernst Stackmann KG for Office clerk .

Q: Does Mathias have any certificates?

Mathias has 3 certificates . These include: Certificate in motivation and information measures (distance learning course) , Datev seminar Lodas Classic/Comfort - payroll accounting for new users , and Instructor qualification exam .

Q: What is the availability of Mathias?

Mathias will be available from May 2026 .

Recommended expert

Westerdeichstrich, Germany

Experience

Aug 2008 - Apr 2010

1 year 9 months

Freelance Accounting and HR Consultant

Boowl Company GmbH

Annual financial statements IFRS and HGB
Payroll accounting
Cash flow planning
Optimizing processes in the ongoing accounting
Customizing Navision 5.0 to company requirements
Reporting
Preparing payment runs
VAT pre-returns and annual returns
Creating and posting outgoing invoices
Dunning
Bank transactions
Personnel administration
Travel expense reporting
Posting incoming invoices and cash vouchers

Apr 2005 - Apr 2007

2 years 1 month

Subcontractor Finance and Accounting

Treuenfels GmbH

Support in optimizing processes in the ongoing accounting
Operational support in accounting:
Post incoming invoices and prepare payment runs (automated and manual)
Create, post, and manage outgoing invoices, dunning
Prepare and post cash reports and determine cash balance
Post bank transactions
Preparatory work for preparing financial statements
VAT prereturns and annual VAT returns

Oct 2003 - Aug 2004

11 months

Financial Accountant and Collections Clerk

KRAVAG-LOGISTIC Versicherungs-Aktiengesellschaft

Reconciliation of incoming payments and recording in sub-ledgers (collections and claims)
Initiating direct debits
Updating master data (bank details) in the collections system
Handling tasks using Microsoft Office, electronic banking software Sfirm32, host collections and claims system
Executing all dunning steps up to referring to legal dunning proceedings
Write-off of receivables and research via Infoscore

Jan 2001 - Jun 2001

6 months

Financial Accountant

VASA Energy GmbH & Co. KG

Managing accounts receivable (SAP R/3 FI)
X-Bill invoicing (UDI)
Manual invoicing
Commercial invoices
Dunning
Recurring entries
Account reconciliations
Vendor management and posting incoming invoices
Handling payment transactions and account clearing
Use of SAP R/3, Microsoft Office 97, UDI (M-Sale, X-Bill, V-Store)

Sep 1999 - Dec 2000

1 year 4 months

Accounts Payable Clerk

KID-Systeme GmbH

Posting incoming invoices
Resolving invoice discrepancies and blocked invoices
Posting cash vouchers
Processing vendor payments
Bank transactions

Jun 1997 - Sep 1999

2 years 4 months

Administrative and Accounts Payable Clerk

Ernst Stackmann KG

Processing accounts payable
Independently recording and posting business transactions
Supporting the IT department
Maintaining electronic cash registers

Aug 1994 - Jun 1997

2 years 11 months

Trainee Office Clerk

Ernst Stackmann KG

Training in accounts payable and IT departments
Processing and posting transactions on the PC
Gained extensive knowledge in handling electronic cash registers

Aug 1992 - Jul 1994

2 years

Electromechanical Apprentice

Elektro Bellut GmbH

Training as an electromechanic
Completion of assigned training tasks until the termination of the training contract

Feb 1991 - Mar 1991

2 months

Energy Electronics Intern

J.J. Sietas KG Schiffswerft GmbH & Co.

Getting to know the shipboard electricians department
Skill in handling materials and tools

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 Professional Services (2 years), Manufacturing (2 years), Information Technology (1.5 years), Insurance (1 year), and Energy (0.5 years).

Professional Services

Manufacturing

Information Technology

Insurance

Energy

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 Accounting (11.5 years), Finance (5 years), Information Technology (5 years), Production (2 years), and Human Resources (1.5 years).

Accounting

Finance

Information Technology

Production

Human Resources

Skills

Office Clerk
Financial Accountant
Instructor Qualification Exam
Ms Office (Word, Excel)
Sap R/3
Lexware
Navision
Simba
Datev
Agenda
Addison

Languages

German

Native

English

Advanced

Education

Aug 1994 - Jun 1997

Ernst Stackmann KG

Vocational training as an office clerk · Office clerk · Buxtehude, Germany

Aug 1992 - Jul 1994

Elektro Bellut GmbH

Vocational training as an electromechanic · Electromechanic · Neu Wulmstorf, Germany

Aug 1982 - Jun 1992

Grund- und Realschule Neu Wulmstorf

Secondary School Certificate I, intermediate school leaving certificate · Neu Wulmstorf, Germany

Certifications & licenses

Certificate in motivation and information measures (distance learning course)

Trade and Distribution Professional Association

Datev seminar Lodas Classic/Comfort - payroll accounting for new users

Datev

Instructor qualification exam

Hamburg Chamber of Commerce

Profile

Created

March 2026

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Frequently asked questions

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

Where is Mathias based?

Mathias is based in Westerdeichstrich, Germany.

What languages does Mathias speak?

Mathias speaks the following languages: German (Native), English (Advanced).

How many years of experience does Mathias have?

Mathias has at least 13 years of experience. During this time, Mathias has worked in at least 9 different roles and for 8 different companies. The average length of individual experience is 2 years and 6 months. Note that Mathias may not have shared all experience and actually has more experience.

What roles would Mathias be best suited for?

Based on recent experience, Mathias would be well-suited for roles such as: Freelance Accounting and HR Consultant, Subcontractor Finance and Accounting, Financial Accountant and Collections Clerk.

What is Mathias's latest experience?

Mathias's most recent position is Freelance Accounting and HR Consultant at Boowl Company GmbH.

Which industries is Mathias most experienced in?

Mathias is most experienced in industries like Professional Services, Manufacturing, and Information Technology (IT). Mathias also has some experience in Insurance and Energy.

Which business areas is Mathias most experienced in?

Mathias is most experienced in business areas like Accounting, Information Technology (IT), and Finance. Mathias also has some experience in Production/Manufacturing and Human Resources (HR).

What is Mathias's education?

Mathias attended Ernst Stackmann KG for Office clerk.

Does Mathias have any certificates?

Mathias has 3 certificates. These include: Certificate in motivation and information measures (distance learning course), Datev seminar Lodas Classic/Comfort - payroll accounting for new users, and Instructor qualification exam.

What is the availability of Mathias?

Mathias will be available from May 2026.

What is the rate of Mathias?

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