Mary Barker (Opp)
Owner/Operator of MOpp Bookkeeping Services.
Over 18 years experience with full charge bookkeeping. Specializing in massive cleanups of books, audit support and great attention to detail. Your money is critical to the functioning of your business. That's why I strive to take great care in ensuring everything is 100% accounted for and properly categorized.
In an era where many bookkeeping services rely heavily on artificial intelligence and outsourcing—often at the expense of accuracy and quality—we take a different approach. We recognize that every business is unique, which is why we tailor our services to meet the specific needs of each client. We understand the trust you place in us by handing over your finances, and we believe you deserve more than just cost-effective solutions. You deserve personalized, U.S.-based bookkeeping with the attention and care your books truly require.
Certifications
Certified Bookkeeper & Quickbooks Certified ProAdvisor
Tanya Garzon
Senior Expert Bookkeeper / Partner
Accomplished bilingual (English/Spanish) Bookkeeper and Office Manager with 20+ years of experience in financial operations, team leadership, and client support. Proven expertise in QuickBooks (Certified Advanced ProAdvisor) with a strong track record of streamlining accounting processes, improving financial accuracy, and supporting organizational growth.
Adept at managing full-cycle bookkeeping, payroll, audits, and compliance while delivering exceptional customer service.