Finance and accounting operations
10 due diligence consultants
These ten due diligence consultants have worked on due diligence for private equity investors and other deal clients, at advisory firms or independently. A reader can learn how an experienced due diligence consultant scopes a review, tests a target's earnings and market position, and flags the issues that change a deal.
Professionals to explore
01—10Ben Lewis
LinkedInExperience: Managing Director - Strategy & Innovation, CDD Lead · BDO USA
Managing Director - Strategy & Innovation, CDD Lead at BDO USA since 2025, and Managing Director at KPMG from 2015 to 2024. His profile says he advises private equity firms and corporations on commercial due diligence (CDD), growth strategy, profit optimization and data-driven forecasting. He was VP, Corporate Strategy at Thomson Reuters (2007–2011).
Carlos Zarazua
LinkedInExperience: Independent Consultant - PE Strategy and Diligence · A/B Consulting
Independent Consultant - PE Strategy and Diligence at A/B Consulting since 2026. His listed roles include Private Equity Strategy & Diligence at Stax (2025–2026) and, at Deloitte, Manager - M&A Strategy, Diligence & Restructuring (2023–2024) and Senior Consultant - Strategy & Operations (2020–2023). His profile describes M&A strategy consulting and business valuation work covering due diligence, market analysis, growth strategy and cost synergy identification.
Cesare Gussago
LinkedInExperience: Senior Advisor Value Creation & Due Diligence for Private Equity & Infrastructure · Independent Consultant
Senior Advisor Value Creation & Due Diligence for Private Equity & Infrastructure as an independent consultant since 2025, providing advisory services to private equity firms, infrastructure investors and corporate leadership teams. He was Managing Director at Alvarez & Marsal (2024–2025), Partner- EY Transaction Advisory Services at EY (2019–2024) and Member of Management Team-Partner at PA Consulting (2016–2019).
Dilpreet Cronin, CFA
LinkedInExperience: Partner, Private Equity · CrossCountry Consulting
Partner, Private Equity at CrossCountry Consulting since 2026, in its financial due diligence practice. At CDS the profile lists Partner (2023–2026), Director (2021–2023), Senior Manager (2019–2020) and Manager (2017–2019). The profile describes more than a decade of financial due diligence work advising private equity sponsors, corporate acquirers and founders.
James Killing
LinkedInExperience: Partner · Dow Schofield Watts
Partner at Dow Schofield Watts since 2018 and co-founder of its Transaction Services London office, providing financial due diligence and vendor due diligence with a focus on mid-market private equity backed transactions. He was Director, Transaction Services at RSM UK (2013–2018) and Director at RSM Tenon, now RSM UK (2010–2013).
Larissa Zaitseva
LinkedInExperience: Independent Consultant · Self-employed
Independent consultant since 2024, focused on strategy and commercial due diligence. She was Senior Manager Assistant Director at EY-Parthenon (2020–2024), Consultant at OC&C Strategy Consultants (2018–2019) and Senior Associate at Boston Consulting Group (BCG) (2013–2016). Her profile cites more than 30 commercial due diligence and corporate strategy projects for private equity and corporate clients.
Nathaniel Bartch, CFA, CPA
LinkedInExperience: Managing Director, Global Transaction Advisory Group · Alvarez & Marsal
Managing Director, Global Transaction Advisory Group at Alvarez & Marsal since 2023. At KPMG US he was Partner (2018–2023), Managing Director (2016–2018) and Director (2012–2016). His profile says he specializes in buy- and sell-side financial and accounting due diligence for private equity funds and their portfolio companies and has led due diligence on more than 200 transactions.
Philippe Serzec
LinkedInExperience: Partner - Transaction Services · PwC - Transaction Services
Partner - Transaction Services at PwC since 2020. He was Partner Transaction Services at Deloitte (2010–2020) and Partner - Transaction Services at EY (2008–2010). His profile describes buy-side and vendor due diligence for private equity (LBO and growth capital) and corporate clients, covering financial, accounting and operational analysis, historical performance, debt and working capital, and business plans.
Ryan Guthrie
LinkedInExperience: Managing Director · Andersen
Managing Director at Andersen since 2023, where his profile says he leads a national team serving private equity and corporate clients on buy-side and sell-side engagements, specializing in financial due diligence and transaction support. At BDO USA he was National Leader of Private Equity, Advisory Services (2021–2023), National Managing Partner, Transaction & Business Advisory Services (2018–2023) and Partner, Transaction Advisory Services (2009–2018).
Vadim M. Tsysin, CPA
LinkedInExperience: Managing Director M&A and Operational Due Diligence Private Equity · Alvarez & Marsal
Managing Director M&A and Operational Due Diligence Private Equity at Alvarez & Marsal since 2021, and Senior Director M&A and Operational Due Diligence Private Equity there from 2016 to 2021. His profile says he leads coverage for pre- and post-acquisition engagements, and his headline lists him as Education/EdTech Industry Lead. He was Senior Director of M&A and Capital Markets at DeVry Education Group (2009–2015).
Choose the right perspective
Match the consultant's type of diligence to your deal, since financial, commercial and operational due diligence answer different questions about a target. Ask each person about recent transactions similar to yours in size and sector before deciding.
Questions to take into the conversation
- 01How do you scope a due diligence review when the deal timeline is only a few weeks?
- 02What findings in a quality of earnings or commercial review most often change the price or terms of a deal?
- 03When does it make sense to commission vendor due diligence before a sale process starts?
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot and may describe past or present roles. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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