Industry Influencers

Chief Tax Office

Unique in the tax software industry, the Vertex Chief Tax Office consists of former Fortune 500 tax executives who provide insight on the impact of tax regulations, policy, enforcement, and emerging technology trends on global tax department operations.

  • Michael J. Bernard

    Chief Tax Officer, Transaction Tax

    Michael Bernard is the Chief Tax Officer of Transaction Tax. In his role, he provides insight and thought leadership around tax department operations, U.S. indirect tax, tax risk management, and tax policy, as well as emerging tax trends. He is an executive-level tax attorney with a diverse portfolio of experience in corporate tax, administration, and finance, including a substantive knowledge of U.S. and international tax laws.

    Prior to joining Vertex, Michael was in various tax leadership roles at Microsoft Corporation for 28 years, the most recent being Senior Director – Tax Counsel. Michael led teams in the following functional areas: direct and indirect tax controversy, sales and use, business license, property, tax IT, SOX, and telecommunications. He also co-led a corporate taxpayer advocacy group with the Washington Department of Revenue and was a Director on the Board of the Washington Research Council. Michael has also testified before administrative and lawmakers at both the federal and state level.

    Michael earned both a J.D. and a Bachelor of Science in Business Administration from Creighton University. He is a part-time lecturer of Law in the LLM program at the University of Washington School of Law. Michael also served on the board of directors, executive committee, and chaired committees for The Tax Executives Institute (TEI) for nearly 25 years.

  • Peter Boerhof

    Director, VAT

    Peter Boerhof is the VAT Director for Vertex. In his role, he provides insight and thought leadership regarding the impact of tax regulations, policy, enforcement, and emerging technology trends in global tax. Peter has extensive experience in international transactions, business restructuring, tax process optimization, and tax automation. Prior to joining Vertex, Peter was responsible for leading the indirect tax function at AkzoNobel, where he designed and implemented a tax control framework, optimized VAT, and managed the transition to a centralized tax operating model for global tax processes.

    He was also responsible for indirect tax planning and compliance for merger and acquisition, supply chain, and ERP projects, as well as the implementation of tax automation initiatives like tax engines and robotics. Boerhof also worked at KPN Royal Dutch Telecom managing VAT, as well as Big Four accounting firms Deloitte and Ernst & Young (EY) advising on VAT compliance and optimization processes. Boerhof holds an MBA from the Rotterdam School of Management and a master’s in tax law from the University of Groningen.

  • George L. Salis

    Principal Economist & Tax Policy Advisor

    George L. Salis is Principal Economist and Tax Policy Advisor who is an economist, lawyer and tax professional with over 25+ years of experience in international taxation and trade compliance, tax planning and controversy, fiscal regulation and tax economics consulting. He is responsible for analysis of economic, legal, financial, trade, and development issues in countries, as well as tracking and analyzing the rapid change in tax policies and regulations, and inter-governmental organizations, and tax administrations around the world.

    George is the recipient of the Advanced Certificate in EU Law from the Academy of European Law, European University Institute in Florence, and the Executive Certificate in Economic Development from the Harvard Kennedy School of Government.

    George holds a BSc in economics and political science, an LLB (Honours), an MA in legal and ethical studies, and an LLM (Honours) in international tax law. He also holds a PhD in international law and economic policy and is a Certified Business Economist (NABE).

Thought Leaders

Our growing thought leadership team of tax and technology experts contributes knowledge on a global scale to help you make sense of the latest industry topics and their inherent business implications.

  • Aleksandra Bal

    Senior Product Manager, VAT Reporting & Compliance Solutions

    Aleksandra Bal is senior product manager, responsible for leading the further development of Vertex VAT reporting and compliance solutions. Aleksandra has extensive experience in international taxation and VAT, including managing and developing digital solutions and digital transformation initiatives. A published author and speaker, Aleksandra holds a Ph.D. in virtual currency and blockchain, as well as several other advanced degrees and designations of distinction.

  • Donal Colbert

    EU Practice Leader, Vertex Consulting

    Donal Colbert leads Vertex Consulting’s European Centre of Excellence. Donal has more than 20 years of international experience in VAT compliance and process automation, both in consulting and in-house as a Global Indirect Tax Senior Manager for a large technology company.

  • David Deputy

    Director, Strategic Development & Emerging Markets

    David Deputy is Director of Strategic Development and Emerging Markets, managing the development of enterprise data management solutions. David brings 20+ years experience in ERP solutions, tax analytics and business intelligence software solutions. His background also includes work at Oracle, corporate finance and in bank regulation. David holds an MBA from Cornell and a Finance degree from the University of Florida.

  • Marc Duclos

    Director, Oracle & NetSuite Global Partnership

    Marc Duclos is the Oracle/NetSuite Partnership Director at Vertex. Marc has 20 years of product marketing and channel management experience developing and managing national partnerships and driving partner account activity. He also has experience in utilizing completely integrated marketing campaigns to directly influence revenue pipeline and overall regional goals. Marc is a graduate of the Rochester Institute of Technology.

  • Erin Kissling

    Partner Manager, Technology Partnerships

    Erin Kissling is a Partner Manager for technology partnerships at Vertex, responsible for leading the global partnership with Salesforce to drive new business, product and channel opportunities. Prior to this position, Erin served as a Partner Marketing Manager, supporting several e-commerce relationships including Magento, BigCommerce and Salesforce, as well as system integrators. She received her undergraduate degree from Kutztown University and is currently pursuing her MBA at Villanova School of Business.

  • Chris Livingston

    Director, Vertex Cloud Operations

    Chris Livingston is director of operations for Vertex Cloud, managing customer implementation processes, as well as the development of connectors to mid‐market ERP and ecommerce platforms. Throughout his career, Chris has held positions in finance, software development, product management and operations. He received his B.B.A. in finance from Pace University and is certified in project management, database management and business analysis.

  • Pete Olanday

    Retail Practice Leader, Vertex Consulting

    Pete Olanday is Vertex Consulting Retail Practice Leader, responsible for the integration of Vertex's Indirect Tax solutions in the retail space, specifically with Point-of-Sale systems and e-commerce platforms. Prior to joining Vertex, Pete worked for IKEA and EY. Pete has a B.S. in information and decision sciences from Carnegie Mellon University.

  • Mark Sieczkowski

    Senior Product Suite Manager, Vertex Cloud

    Mark Sieczkowski is senior product suite manager for Vertex Cloud, responsible for growing revenue and profitability, as well as ensuring customer success, through market-driven product definition, prioritization and realization.

    Mark has over 20 years of IT product and project management experience. He previously served as vice president, solution delivery for Devon IT, where he was responsible for supply chain management and ensuring solution delivery of both hardware and software projects.

  • Fernando Silva

    Director, Brazil Partnerships

    Fernando has more than 23 years of experience in the technology segment, managing strategy, sales, and operations areas at all levels. He had worked for some of the highest-profile technology companies in Brazil and over the last eleven years has been focused on the Tax & Accounting market in Brazil and Latin America. His experience includes work with companies such as Oracle, Mastersaf, TaxWeb, and NFe do Brasil. Fernando graduated with a degree in Business Administration and an MBA in IT Management from FGV and UCI California University.

  • Thomas Steppe

    Global Tax Leader, Indirect Tax Research

    Thomas Steppe is a Global Tax Leader with the Indirect Tax Research department. In his role, he is responsible for the global VAT research content for Vertex’s tax technology solutions. Thomas has more than 12 years of experience in VAT, both in consulting and as an in-house VAT manager, and holds a Master’s Degree in accountancy and applied economics.

  • Nicole van Wandeloo

    Manager, Indirect Tax Research

    Nicole van Wandeloo is Manager of Tax Research with the Vertex Indirect Tax Research department, where she is responsible for the EMEA VAT content for Vertex O Series. Nicole has more than 20 years of international experience in VAT advisory, VAT compliance, and process automation, both in consulting and as an in-house VAT manager. She also holds a master’s degree in Tax Law.

  • Brian Wilchusky

    Director, Global SAP Partnership

    Brian Wilchusky leads our Global SAP partnership, responsible for growing the Vertex relationship across all areas of SAP’s business and developing innovative solutions for the SAP customer base. Brian has over 25 years of experience in partner and channel development, marketing, product management and software sales. He holds a B.S. from the Worcester Polytechnic Institute.

  • Ana Maciel

    Manager, Tax Research

    Ana Maciel is a tax research manager responsible for new tax content that supports the Vertex Indirect Tax O Series solution in Brazil. Based in São Paulo, she has more than 24 years of experience in Brazilian indirect tax and has worked at Vertex for over 11 years. Previously, she worked as a tax advisor to multinational companies in Big 4 accounting firms. Ana holds a B.S. in law and a B.S. in business administration, as well as a post-graduate degree in international trade from Universidade Paulista.

Vertex Named Top Workplace in 2020

For the sixth year in a row, we have been named a 2020 Top Workplace by The Philadelphia Inquirer based on employee surveys over a variety of categories.

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