Our Team

Partner with a team equally invested in achieving your goals.

Mike De Stefano, DMS Management Solutions

Mike De Stefano

Contact Mike ›

Mike is a co-founder of DMS.  Mike began his career over 30 years ago with a large public accounting firm and then transitioned to positions as  accounting manager or controller in small, medium-size and large firms. His diverse experience solidified his enthusiasm for helping small businesses in the areas of accounting, finance and human resources.  Through DMS, Mike achieved his goal of providing corporate-level experience and services at rates that a small business can readily afford.

Mike is passionate about providing practical, cost-effective solutions to business owners and takes immense personal pride in growing his clients’ success.  Positively affecting the bottom-line for his customers provides challenges and personal satisfaction well beyond working for larger corporations. Mike has experience in retail, service, architectural, engineering, real estate and medical fields.

Mike is a 1980 cum laude graduate of Cleveland State University and is a lifelong resident of Northeast Ohio.  He is a diehard sports enthusiast and resides with his wife Susan in Highland Heights.

Maria Angotti, DMS Management Solutions

Maria Angotti

Contact Maria › | Reviews ›

Maria is the Chief Onboarding Officer at DMS and has more than 20 years of experience in general accounting. She specializes in multiple accounting packages with a strong working knowledge of QuickBooks, as evidenced by her QuickBooks ProAdvisor designation.

Her extensive experience enables her to provide a seamless transition to QuickBooks based on the client’s specific industry. Maria is also able to work with clients to enhance utilization of an existing QuickBooks installation.

Her clients include a wide range of small businesses with a focus on legal services, retail sales operations, and manufacturing companies. Her knowledge of company operations allows her to collaborate with the client’s management team on forecasting, tax planning, and asset management.

Maria earned her degree from Miami University of Ohio. Maria donates her expertise to non-profit organizations by helping with their 501( c )(3) applications. She enjoys her free time with her family in Vermilion, OH.

Sean Brady, DMS Management Solutions

Sean Brady, CPA

Contact Sean ›

Sean is the General Manager of DMS. He has been in public accounting since 2010 and earned his CPA in 2011. Sean has a broad range of experiences including auditing, general ledger accounting, tax preparation and tax planning for closely held businesses. His industries of focus are manufacturing and real estate and he has expertise in general ledger accounting, financial reporting, inventory and being a versatile problem solver. Sean prefers to focus his efforts on helping businesses prepare for what is coming - whether it be accounting- and operations-related, tax planning, or longer term business growth or succession planning.

Outside of work Sean enjoys spending time with his family and friends, swimming, walking his dog, traveling, and riding his motorcycle.

Terri Harrison, DMS Management Solutions

Terri Harrison

Contact Terri ›

Terri is the Director of Operations at DMS with over 15 years of experience in general accounting, project accounting, forensic accounting and bookkeeping. Terri spent six years in the Manufacturing field and twelve years in the Architectural & Engineering field.

Terri brings to DMS great enthusiasm for helping companies trouble shoot problem areas and find ways to run more efficiently. Terri truly enjoys getting to know her clients and is committed to their success. Always eager to help, she is very detail oriented and highly motivated. She has advanced financial analysis skills, setup / analysis of budgets, data  evaluation and system management. Terri is proficient in a variety of software  accounting programs as well as Microsoft Office programs.

Terri earned her Bachelor of Science of Business Administration degree from Myers University,  and resides in Lakewood with her family.

Laura Granito, Senior Accounting Manager

Laura Granito

Contact Laura ›

Laura is a DMS Senior Accounting Manager with over 30 years of experience in general accounting. Her expertise includes financial statement preparation, budgeting, cash forecasts, account reconciliation and analysis, payroll processing, intercompany reconciliation, sales tax, accounts payable and accounts receivable.

Laura has worked in a wide range of industries which include Automotive Manufacturing, Environmental, Wind Power, Software/EDI Development and Plastics Manufacturing. She has worked for companies in both the Cleveland area and the East Bay area of California.

Laura earned her accounting degree from Cleveland State University and lives in Garfield Heights with her husband Vince and children, Andrew and Alyssa.

Lisa O'Brien, Accounting Manager

Lisa O'Brien

Contact Lisa ›

Lisa is a DMS Accounting Manager with 15 years of experience in accounting for small to medium-sized businesses. She has associate degrees in Business and Accounting obtained through Lorain County Community College and the University of Akron.

While working in a small public accounting firm she was exposed to a diverse clientele and became proficient in a number of different industries as well as programs such as Sage, Microsoft Office, Thomson Reuters Suite, Lacerte, and QuickBooks - as evidenced by her QuickBooks ProAdvisor designation.

Her skills include bookkeeping, financial statement preparation, payroll processing, trial balance analysis, auditing experience, small business startup, and tax preparation for individuals and businesses.

Lisa resides in Amherst and in her free time enjoys running and catching up with family and friends.

Denise Levine

Denise Levine

Contact Denise ›

Denise has 25 years of accounting experience working with companies ranging in size from small family businesses to larger Fortune 500 companies. She has been a company Controller with experience managing accounting, human resources, administrative, and IT departments, and can assist clients with issues in many diverse business areas. Denise has experience in payroll processing and Workers Compensation, and specializes in process improvement. She has managed software integrations and has experience working with Intuit QuickBooks, Sage/MAS90, Microsoft Dynamics, and Solomon software products.

Denise enjoys spending time with her son who attends Brunswick High School and her daughter who is a student at The Ohio State University.

Marianne Patterson, DMS Management Solutions

Marian Patterson

Contact Marian

Marian has over 20 years of accounting experience working with various size companies in manufacturing and construction. She has a Bachelor of Arts from The Ohio State University and obtained her Post Baccalaureate Accounting Certification from the University of Southern Indiana.

She has focused on Cost Accounting and process improvement throughout her career and has been involved in multiple software conversions and implementations. She assisted in the creation of the shared services department for Accuride Corp. during their transition to Plex ERP. She has had multiple opportunities to work with all types of departments on many team projects.

Marian lives in Eaton Township and enjoys gardening and outdoor activities. She visits her grandson Aidan in Michigan whenever she gets a chance.

Bob Wallish, CPA, Financial Analyst

Robert Wallish, CPA

Contact Bob

Bob is a DMS Financial Analyst with over 10 years of experience.  He earned his Bachelor of Science in Business Administration degree from John Carroll University. As a CPA, Bob has a wide range of experience, including an extensive background in Corporate Taxation and Financial Accounting.  He has focused on financial statement preparation and review, business combinations and acquisitions and federal, state and local taxation.  He is detail oriented and a problem solver who likes to work in a team setting to achieve the best results.

Bob lives in North Royalton with his wife and their son and daughter.  In his free time he enjoys spending time with his family and golfing with his father and brother.

Sharon Rosche, Accounting Manager, DMS Management Solutions

Sharon Rosche

Contact Sharon ›

Sharon is a DMS Accounting Manager who has extensive experience in both the for-profit and nonprofit sectors. Sharon is well versed in all accounting aspects including monthly closings, budgeting, and annual audit or review. Sharon has worked in leadership roles throughout her career that have given her an understanding on how to effectively run organizations that rely on foundation support, federal and state grants, and investor funding. Sharon’s accounting system expertise includes Great Plains, SAP, MIP, SAGE, Quickbooks Online, Quickbooks Desktop, and Peachtree accounting, and she has over 20 years of experience with human resources and payroll.

Sharon received her Bachelor of Science in Accounting from the University of Akron and received her IOM Designation from the U.S. Chamber of Commerce.

Sharon enjoys spending her free time with her family and friends. She is a huge fan of Cleveland sports teams. Additionally, she is an animal lover and has a dog named Oliver, a cat named Gabriella, and a cat named Charley.

Samantha Rada, DMS Management Solutions

Samantha Rada

Contact Samantha ›

Samantha has over 25 years accounting experience working with companies in many different industries varying from family owned businesses, law firms, and professional sports teams. She has been a company Controller with experience managing Accounts Payable, Accounts Receivable and Payroll. She has a strong background in IT Managed Services and varying Human Resource functions. Samantha has a Bachelor of Arts from Cleveland State University.

Samantha lives in Avon Lake and enjoys reading, music, the outdoors and spending time with her sons, Nicholas and Noah.

Brian Schellhase

Contact Brian ›

Brian is a DMS Accounting Manager with 10 years of experience in accounting for small to medium sized businesses. He has experience in accounts receivable, accounts payable, payroll processing, financial statement preparation, management reporting, budgeting, forecasting, and account reconciliations. Brian has experience working with QuickBooks Online, QuickBooks Desktop, Oracle NetSuite, ADP Payroll, Compeat, Sage and CS Fixed Assets. He has a Bachelor of Science from Bowling Green State University and an MBA from Case Western Reserve University.

Brian resides in Strongsville with his wife Kim and in his free time enjoys spending time with family, traveling, and outdoors running, golfing, skiing, and hiking.

Valerie Mechenbier, Office and Marketing Manager

Valerie Mechenbier

Contact Val ›

Val is the Office and Marketing Manager at DMS. Val is an experienced office administrator & marketing professional and has worked for small independent businesses, non-profit organizations, and several regional/national corporations. Her skills include Microsoft Office, database administration, event planning, business communications, WordPress, and social media.

Prior to DMS, Val worked in payroll, human resources, and financial systems implementation and management. The consistent theme through Val’s professional experience is her ability to serve the needs of the organization and its clients with an emphasis on superior customer service.

Val has a Bachelor’s degree from Oberlin College. She lives in Fairview Park with her husband Dave and enjoys spending time with their four children.

Tina Massingill, Staff Accountant

Tina Massingill

Contact Tina ›

Tina is a Staff Accountant at DMS with more than 25 years of experience in general accounting and bookkeeping. Tina spent five years as a Bookkeeper in a small “mom & pop” retail establishment before becoming an Office Manager for a fabrication shop for 12 years. Tina also has bookkeeping experience in a law firm, as well as accounting experience with credit unions & payroll and A/R experience in the service industry. She is very proficient in QuickBooks and Peachtree, and has experience with PC Law. She also has several years of experience in construction billing, using AIA billing forms.

Tina earned her Associate Degree in Accounting and certificate of Proficiency in Payroll at Cuyahoga Community College in 2016.

Tina resides in North Royalton with her boyfriend Jason. Tina enjoys bowling and spending time with her adult children Mindy, Hannah and Jimmy. She is active in her Church and volunteers her time as a director for the local bowling association.

Linda McWilliams, DMS Management Solutions

Linda McWilliams

Contact Linda ›

Linda brings to DMS over 30 years of experience in general accounting and office administration including financial statement preparation, sales analysis, accounts payable & receivable, account reconciliations and payroll. She has managed the books for a corporate headquarters with over 35 unique and diverse locations and has collaborated with senior executives to develop business plans.

Linda is a detail-oriented and conscientious self-starter who is able to strategize and prioritize effectively. She has extensive experience with QuickBooks and Excel.

Linda lives in Parma. She enjoys traveling with her husband Rick and spending time with her family.

Maggie Downey, DMS Management Solutions

Maggie Downey

Contact Maggie ›

Maggie is a Staff Accountant at DMS with more than 30 years of experience in general accounting, bookkeeping and office management. Maggie has over 20 years of experience with QuickBooks (Desktop and Online) and is well-versed in job shop management and payroll applications. Bringing “in the trenches” experience in banking, pension accounting, manufacturing and distribution, Maggie is dedicated to her clients’ success and enjoys the relationships they build together. During her down time, Maggie reads, bakes, and spoils her grandson.

Brandy Olsen, DMS Management Solutions

Brandy Olsen

Contact Brandy ›

Brandy is a Staff Accountant at DMS with more than 5 years of accounting experience. Brandy began her accounting career at a Construction and Real Estate company where she gained experience with accounts payable, accounts receivable, general ledger accounting, construction accounting, and property management accounting. She has extensive knowledge of Sage 300 CRE, TimberScan, and Office Connector, and is also very familiar with QuickBooks Desktop and BNA Fixed Assets Web. Brandy earned her Bachelor’s Degree in Accounting and Financial Management from Hiram College.

Brandy currently resides in Fairview Park with her fiancé Michael and their two cats. Brandy spends her free time hiking in the Cleveland Metroparks and backpacking in the neighboring states.

Sueellen Bruhn, DMS Management Solutions

Sueellen Bruhn

Contact Sueellen ›

Sueellen has a strong background in accounting for small to medium-sized businesses. She also has experience in IT technical support, project management, and document preparation and editing in Word, Excel, and PowerPoint presentations.

Sueellen has 15 years of accounting experience in a variety of industries using QuickBooks software. She has created accounting records for new companies, and provided forensic and cleanup services for distressed company files. Sueellen takes pride in her detail-oriented personality to provide efficient accounting services. She can provide data entry, accounts payable, accounts receivable, and all payroll services, including filing monthly, quarterly, and yearly payroll tax returns.

Sueellen also teaches QuickBooks software part time to adult students. She enjoys working with the owners and office personnel of small to medium-sized businesses to either create new or enhance current accounting practices to ensure accurate and proficient cash controls are in place.

Sueellen resides in Vermilion, OH with her husband and two children.