Meet Our Team
At Mamacos, Bysiewicz & Associates, we believe great work comes from a team that’s engaged, experienced, and personally invested in the success of every client. Our firm is built on a partner-led model, supported by a talented group of professionals who bring technical expertise and genuine care to the work they do.
Partners
Charlie Mamacos
CPA, MST
John Bysiewicz
CPA, MBA
Our Professional Services Team
Our professional staff supports our partners in delivering high-quality tax, assurance, and advisory services. The team includes CPAs, senior accountants, staff accountants, and administrative professionals who are committed to accuracy, organization, and consistent communication.
David Auclair
CPA, MST
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Tax Director
Experience:
David has over 25 years of working with businesses in the construction, real estate & hospitality, M&D and Tech/SaaS industries. David has vast experience providing income tax preparation services, implementing tax minimization strategies, and representing clients before the IRS and Massachusetts DOR. He works closely with privately-held companies and their owners to provide the information needed to allow them to make the most tax-efficient decisions possible. David was formerly a tax partner with a large national public accounting firm.
Education:
Masters in Taxation, Suffolk University
Bachelors in Accounting, University of Connecticut
Alex Wang
CPA, MSA
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Tax Senior Manager
Experience:
Alex has over 8 years of experience working with businesses in the construction, real estate, manufacturing, professional services, cryptocurrency, and technology industries. She specializes in multi-state tax compliance and strategic tax planning tailored for closely-held companies and their owners. Alex is focused on delivering a full-service experience for her clients to navigate in a dynamic tax environment and to achieve their long-term success.
Education:
Master of Science in Accountancy, Bentley University
Anthony Nicolella
CPA, MSA
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Assurance Manager
Experience:
Anthony has worked in public accounting since graduating in 2019. He began his career with a large global CPA firm and has had the opportunity to work with a wide variety of clients, ranging in size and industry. He has taken a liking to servicing privately held construction clients, but enjoys mixing it up and exploring uncharted territory. Anthony has experience in financial audits and reviews, financial statement preparation, 401(K) and pension plan audits, and tax return preparation. Outside of work, Anthony enjoys hiking, biking, snowboarding and watching hockey.
Education:
Masters of Science in Accountancy, University of New Hampshire ‘19
Bachelors of Science – Business Administration; Finance, Accounting, University of New Hampshire ‘18
John (Jack) Crawford
CPA, MSA
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Assurance Manager
Experience:
Jack began his career with one of the leading national accounting firms and started with MB&A in June of 2023. Jack has 5 years of progressive experience servicing clients across the construction, manufacturing and distribution (M&D), hospitality, not-for-profit and ERISA sectors. At MB&A, Jack has led audit, review and compilation engagements, as well as prepared business tax returns. He places a strong emphasis on providing exceptional client service.
Education:
Masters of Science in Accountancy, University of New Hampshire ‘21
Bachelors of Science – Business Administration; Accounting, Management,
University of New Hampshire ‘20
Joseph Murney
MSA
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Tax Senior Associate
Experience:
Joe has over 7 years of experience partnering with businesses in real estate, construction, SaaS, food service, and hospitality. Specializing in income, international, and state and local tax, Joe helps clients identify hidden risks, uncover opportunities, and align their tax strategy with broader business goals. Deeply passionate about closely-held businesses and their shareholders, Joe provides the proactive guidance and personalized support needed to stay ahead in a constantly evolving tax landscape.
Education:
Masters of Science in Accounting, Merrimack College
BBA with Accounting Concentration, Merrimack College
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