Our people.

Rutger Koelewijn MSc RA CIA

Rutger Koelewijn graduated in Business Economics at the Free University (VU) in Amsterdam. He started his career as an external auditor at EY Amsterdam office, EY London office and EY Willemstad / Curacao office, respectively, where he worked for more than ten years in the financial industry (banks and insurance companies) and in the general business practice.

He then worked for more than ten years as CFO with a large international wholesale and retail company in the food industry in the Caribbean and as Managing Director Finance and Operations of both an onshore bank and an offshore bank in Curacao, respectively.

In the last ten years before joining, Rutger worked as an accountant and advisor with a large accounting firm in The Netherlands rendering accountancy and business advisory services to small and medium sized companies, entrepreneurs and professionals.
Rutger has held several Supervisory Directorships with companies and foundations in miscellaneous fields of industry and is therefore well known with corporate governance structures.

Rutger has a long in-depth experience in rendering auditing, accounting and business advisory services to both international and Dutch clients and has broad experience with corporate governance. Rutger specializes in corporate structuring and other business advisory services.

Rutger holds a master in Business Economics and is further registered with the Dutch Institute of Chartered Accountants (NBA) as a Dutch ‘RegisterAccountant’ (RA) and with the Institute of Internal Auditors (IIA) as an Certified Internal Auditor (CIA).

Inna Akimova

Inna Akimova graduated in Economy at the Economic High School in Odessa (with Cum Laude diploma). She also holds a bachelor’s degree in East European Studies at the University of Amsterdam.

Inna started her career as financial assistant and later as accountant in Riga, Latvia. After moving to The Netherlands in 1994, she worked in several administrative and financial positions at The Amsterdam Trade Bank and several other companies in the financial industry. Before joining KC Accounting Inna was an Assistant Accountant for different companies of the Kardan group.
Inna has an extensive experience in a variety of fields, including financial administration and accounting and speaks English, Dutch and Russian.

In her current position as Assistant Accountant with KC Accounting she is responsible for the daily bookkeeping, accounting and financial reporting of our international clients.

Klaas Maarten van Slooten AA RB

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Irina Nikitina MSc

Irina graduated in Accounting and Audit at the State University of Management, Moscow (Russia).

Prior to KC Accounting, Irina has 17 years of experience in accounting and finance in Russia and the Netherlands. Before joining KC Accounting Irina was a Financial Specialist for Zeppelin Russland.

Her previous experience plus her current daily involvement in accounting and reporting services support her well in the different accounting and reporting engagements at KC Accounting.

Harro Ridt RA

Harro Ridt has worked at KPMG Audit for over 20 years. He started at KPMG as youngest assistant. Ultimately, as senior manager, he was responsible for the coordination of an international audit team for one of Europe’s largest financial groups. In these years, he has gained experienced in almost all industries and worked for KPMG in the Netherlands, Belgium and Czech Republic.
In 1999, Harro qualified as Register Accountant (Certified Public Auditor) and from that moment on has been registered as a Chartered Accountant (RA) with the Dutch Institute of Charted Accountants (NBA).

After he left KPMG, Harro has worked 8 years with Ageas, the largest insurance group of Belgium and part of the Bel20 share-index. At Ageas, Harro has set up the Risk Management and Prudential reporting for the group. Harro has advised many companies on issues of Risk Management, Compliance and Accounting.

Bianca Kotze BAcc FAc

Bianca completed a Bachelor of Accounting Science in Financial Accounting from the University of South Africa in Cape Town, South Africa.

Prior to KC Accounting, Bianca has 4 years of experience in accounting and finance in South Africa. Her previous experience plus her current daily involvement in accounting and reporting services support her well in the different accounting and reporting engagements at KC Accounting.

Pieter Hallebeek

Pieter studied Law in Amsterdam. He started his career at Baker & McKenzie and subsequently worked for more than 15 years in the financial industry at Intertrust. In 2017 he started with a co-founder Regulatory Lab which developed a software platform especially for law and tax firms to simplify and improve onboarding of clients and compliance with AML legislation.

Pieter has experience in compliance, writing office policy, contact with regulators, training and “client experience”. Throughout his career, he has seen the change in regulation: from limited rules to today’s complex, risk-based approach. In various positions, Pieter has developed a clear vision of compliance and client acceptance – from the perspective of the institution, but also from the perspective of the regulator and the client. As expert, Pieter is regularly approached by law and tax firms to help think about a variety of compliance issues.

Cristina Russu

Christina is a highly motivated and detail-driven graduate with practical work experience as a Junior Accountant. She is skilled in data processing and analysis, and provides support to the entire KC Accounting team. She completed a Bachelor in Economic Sciences, Accounting Qualification from the Academy of Economic Studies of Moldova.

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Rianne Rijnja

Rianne Rijnja has obtained a degree in Social Arts, specifically in Theatre Science. During her studies in Leiden in Theatre Science she was active member of her Student Association, and eventually became head of the Board of her Student Association.
After the completion of her studies, Rianne worked as an event manager with a variety of famous Caterers, and for large Annual Events like Tefaf and ABN World Wide Tennis Tournament. For the last 5 years Rianne worked as a Senior Event Manager at the National Maritime Museum.

In 2022 Rianne switched careers to Office Management and started at KC Accounting in November. As Office Manager, Rianne is the executive in-charge and organizes and controls the office in such a manner that all the service functions are performed efficiently and effectively via a range of administrative, clerical, financial and managerial tasks.