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Michael O'Brien Email & Phone Number

Accounts Receivable Analyst/Rebates excelling in financial concepts and customer relationships. at Mayne Pharma
Location: Metro Jacksonville, United States 7 work roles 2 schools
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✓ Verified July 2026 3 data sources Profile completeness 86%

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Accounts Receivable Analyst/Rebates excelling in financial concepts and customer relationships.
Location
Metro Jacksonville, United States
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Who is Michael O'Brien? Overview

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Michael O'Brien is listed as Accounts Receivable Analyst/Rebates excelling in financial concepts and customer relationships. at Mayne Pharma, a with 715 employees, based in Metro Jacksonville, United States. AeroLeads shows a matched LinkedIn profile for Michael O'Brien.

Michael O'Brien previously worked as Senior GTN Data Analyst at Mayne Pharma and Accounts Receivable Analyst/Rebates at Amylyx Pharmaceuticals. Michael O'Brien holds Associate'S Degree, Finance, General from Florida State College At Jacksonville.

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Mayne Pharma

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Profile bio

About Michael O'Brien

At the heart of my recent roles at Amylyx Pharmaceuticals and Johnson & Johnson Vision lies a steadfast dedication to precision in financial analysis and customer relationship management. Excelling in complex environments, my focus is on optimizing accounts receivable processes and enhancing client interactions.Leveraging robust financial concepts, alongside a mastery of SAP and Excel, my tenure is marked by contributions to comprehensive financial reporting and effective stakeholder communication. The value I bring is reflected in streamlined operations and sustained customer satisfaction.

Current workplace

Michael O'Brien's current company

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Mayne Pharma
Mayne Pharma
Accounts Receivable Analyst/Rebates excelling in financial concepts and customer relationships.
australia
Website
Employees
715
AeroLeads page
7 roles

Michael O'Brien work experience

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Senior Gtn Data Analyst

Current

Durham, North Carolina, United States

Oct 2024 - Present

Accounts Receivable Analyst/Rebates

Cambridge, Massachusetts, United States

Jan 2024 - May 2024

Sr Deductions Analyst

Jacksonville

• Hired to build Deductions Team during a time of growth at Fanatics, INC.• Work various Deduction types in a timely manner (Shortage, POD, and Pricing Claims)• Communicate with internal and external customers to resolve Deductions.• Created and implemented Deduction reporting for tracking purposes.• Worked Major Customer Accounts ( Walmart, Costco, Ect.)• Trained all new Deduction analysts.

Oct 2018 - Oct 2020

Fp&A Analyst

Jacksonville, Florida, United States

• Completed a weekly Cost Per Unit report to ensure Warehouse Efficiency.• Present a monthly Cost Per unit meeting with Warehouse.• Calculate and Maintain a Duty Taxes Spreadsheet to ensure adequate accruals.• Create and Maintain a spreadsheet to monitor and track warehouse billing for Stuart Weitzman and Kate Spade Brands.• Prepare an Annual Operating Plan for Warehouse expenses under Stuart Weitzman brand.

Nov 2017 - Oct 2018

Senior Accounts Receivables Analyst/Credit Analyst

Jacksonville, Florida Area

• Performed monthly reporting duties for management review: Bank Reconciliation, cash discount discrepancy, monthly account aging.• Managed customer deductions, matched to credits, ECT. IE Chargebacks, Returns, Rebates, Bill backs, Shortages and Post audits.• Maintained a CVS pharmacy bill back report that resulted in a $600k write back to income.• Developed SAP tools and dashboards to analyze customer aging, financial reporting and customer DSO reports, and Cash discount discrepancy reports.• Responsible for Billing, Deduction Management, Invoice validation for 4 of the top 5 customer accounts for roughly $600M yearly.• Ran and maintained a yearly tax exempt certificate program for 400 customers over 3 Ranbaxy companies.• Maintained all records for SOX and JSOX audit requirements. • Maintained customer credit files.• Initiated all new customer credit applications.• Gathered all pertinent information regarding new customer accounts, IE credit application, DNB reporting, applicable licensing, DEA Certificate, tax exempt certificate and audited financials.• Coordinated with sales to determine credit limit based on estimated sales.• Directed customer service to set a new account up for billing once all approvals had been received.• Set up the account from a finance perspective in SAP to capture all applicable accruals.• Monitored and maintained the order hold queue. Determined customer risk if they were ordering over their issued credit limit and released orders based on financials, up to $250k over the credit limit.• Performed yearly and ad’hoc credit limit reports for over 400 customers to determine if adequate credit limits were in place. Recommended new credit limits if the current limit was too low for future sales, or too high based on reduced sales.• Monitored 400 customers’ credit limits before and during major product launched to ensure smooth delivery of product.

Apr 2005 - Oct 2017
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2 education records

Michael O'Brien education

Regents Diploma, General Studies

Poughkeepsie High School

Activities and Societies: Golf Team, Football TeamGraduated 3rd in class.

FAQ

Frequently asked questions about Michael O'Brien

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What company does Michael O'Brien work for?

Michael O'Brien works for Mayne Pharma.

What is Michael O'Brien's role at Mayne Pharma?

Michael O'Brien is listed as Accounts Receivable Analyst/Rebates excelling in financial concepts and customer relationships. at Mayne Pharma.

Where is Michael O'Brien based?

Michael O'Brien is based in Metro Jacksonville, United States while working with Mayne Pharma.

What companies has Michael O'Brien worked for?

Michael O'Brien has worked for Mayne Pharma, Amylyx Pharmaceuticals, Johnson & Johnson Vision, Drive Devilbiss Healthcare, and Fanatics, Inc..

Who are Michael O'Brien's colleagues at Mayne Pharma?

Michael O'Brien's colleagues at Mayne Pharma include Sean Bieber, Matthew Evans, Susana Velasquez, Fiona Bell, and Kevin Stanton.

How can I contact Michael O'Brien?

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What schools did Michael O'Brien attend?

Michael O'Brien holds Associate'S Degree, Finance, General from Florida State College At Jacksonville.

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