Always two steps ahead.
Our multidisciplinary team of VAT advisors, accountants, data analysts, and IT experts brings in-house experience from multinationals across various industries. Whether you need temporary support or specialized expertise, VATWorkx delivers.
Joyce Zijlstra
Partner & Indirect Tax Specialist
Joyce has more than 20 years of experience in consulting on Indirect Tax. In recent years she has developed a strong focus on data analytics, VAT automation and tax assurance projects. Drawing on VATWorkx indirect tax team, she advises clients in a wide range of sectors, including international trade industries, public authorities, financial institutions and the real estate sector.
Hermen ter Harmsel
Partner & Software Engineer
Hermen is a software engineer specializing in systems integration and data-driven applications. As a lead developer, he has built custom solutions, from web and rich client applications to backend web services and e-invoicing solutions. With over 20 years in IT security, he has implemented identity and access management for public sector and healthcare clients.
Hans Rennings
Partner & Indirect Tax Specialist
Hans Rennings is a seasoned indirect tax specialist with over 20 years of experience in complex VAT environments. He combines deep technical expertise with hands-on business experience, having spent five years leading the Indirect Tax team at Ahold Delhaize and four years as a Partner in Deloitte’s indirect tax practice. He has broad experience across VAT, including retail, e-commerce, M&A, international trade, and dispute resolution, and has a strong focus on indirect tax strategy, governance, and control. He is passionate about working in multidisciplinary teams and supporting clients with pragmatic, forward-looking solutions, combining technical excellence with a highly personal and committed approach.
Andre van Duin
IT Consultant
Andre has over 20 years of experience in corporate IT, with a strong understanding of enterprise applications across logistics, sales, and finance. He has a keen analytical perspective on data integration across corporate systems and extensive experience in large multinational projects involving software and data migration.
Melinda Langras
Senior Financial Systems Analyst / ITX Tech
Melinda is a dedicated financial expert with over 25 years of experience. She has experience with implementing multiple ERP systems and optimizing internal processes. She worked for companies both national as international in branches. Melinda has managing experience, is accurate and has a team player mentality.
Sharmila Mathoera
Project Manager
Sharmila is an experienced VAT Technology & Compliance Manager with over 15 years of expertise in the legal services and import/export industry. She specializes in VAT Accounting, Account Reconciliation, VAT Training, Data Collection, Data Automation & Implementation and international social security processes for expats.
Paula Nagel
ITX Compliance Data and Automation Specialist
Versatile VAT Compliance, Tax Technology, and Finance Accounting Specialist with over 25 years of international experience across diverse sectors including global multinationals. Demonstrated expertise in VAT automation design and implementation, indirect tax compliance, financial reporting, GL accounting, P&L analysis, and forecasting.
Valerie Samantha
VAT Accountant
Valerie holds a Master’s in Accounting and Financial Management from Erasmus Rotterdam School of Management. Valerie is data- and process-driven. She recently obtained certifications, to be able to implement VAT determination and reporting solutions. In recent years she has worked for multinational clients, where she managed their VAT compliance in various jurisdictions.
Razvan Vasilache
Software Engineer
Razvan is a software engineer with a strong academic background from the Politehnica University of Bucharest (UPB), where he obtained both his Bachelor’s and Master’s degrees in Automatic Control and Computer Science. He focuses on building reliable, efficient software solutions, with experience in e-invoicing implementations. He brings a structured, analytical approach to complex technical challenges.
Colette Hoogervorst
Office Manager
Colette graduated as Management Assistent and has 20+ years of experience as an office manager and administrative assistant. Colette is an important support for the VATWorkx team and point of contact for its clients.
Sebastian Bobeica
Data Applications Engineer
Sebastian graduated in International Finance & Control and now focuses on optimizing tax processes through data analysis and technology. He uses advanced tools to analyze financial data, improve reporting accuracy, and build tech-driven solutions that enhance efficiency and compliance in Indirect Tax.
Sneha Vidhun
Software Engineer
Sneha is a software engineer with 7+ years of experience, specializing in full-stack web development. She excels in creating end-to-end solutions, covering the entire software lifecycle from planning and design to deployment. Her expertise includes database management, testing, CI/CD pipelines, and cloud-native technologies.
Mark van Zijtveld
Senior Data Consultant
Mark is an enthusiastic analytical professional, equipped with a solid understanding of big data, continuous monitoring, IT & financial solutions. Relaying on years of experience in data analytics, he is highly proficient at developing lasting and profitable relationships with customers and knows exactly how to navigate between business and IT.
Edger Mugge
Senior Java Developer
Senior Java Developer with over 25 years of experience in corporate IT. For the past 13 years, he has focused on Java-centric roles – designing, building and maintaining mission-critical applications predominantly in the finance and public sectors. He’s delivered large-scale, enterprise-grade systems, leveraging frameworks such as Spring Boot and Java EE.
Baldvin Kadar
Financial Systems Analyst
Baldvin is an AMSIB undergraduate specialising in finance and e-invoicing. He combines a developing technical focus in digital tax and compliance with a strong international background, having lived and worked across five countries. His cross-cultural experience supports precise, client-focused delivery, complemented by fluency in four languages.
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