Open to opportunities

Celine Stein

@celinestein

Message

I’m a senior collections specialist improving cash flow through disciplined AR and process optimization.

United States

Message

What I'm looking for

I’m looking for a role where I can lead collections and AR, improve cash flow, and streamline processes. I want a high-volume, cross-functional environment that values accountability, strong client relationships, and measurable results.

I’m a results-driven Financial Senior Collections Specialist with 15+ years’ experience in collections, financial operations, and cross-functional leadership. I accelerate cash flow, reduce outstanding receivables, and deliver measurable revenue growth through practical process improvements.

In my most recent role as a Financial Senior Collections Specialist, I managed a portfolio of 2,800+ active clients by using proactive communication and follow-up strategies, including cash apps. I designed and implemented collections process improvements that reduced outstanding receivables and lowered escalations by resolving complex account issues such as disputed invoices and payment delays.

I partner closely with finance and sales teams to align collections efforts with business growth objectives, contributing to record-setting cash flow. I’m known for strong client relationship management, decisive problem-solving, and operating effectively in high-volume, multi-site environments while maintaining accuracy and compliance.

Earlier roles strengthened my foundation across accounts receivable and payable, billing, HR and payroll support, administrative operations, and internal audits. I bring a continuous process improvement mindset—focused on productivity, operational efficiency, and long-term stability.

Experience

Work history, roles, and key accomplishments

Financial Senior Collections Specialist

Ontellus

Jan 2020 - Jan 2025 (5 years)

Managed a portfolio of 2,800+ active clients by improving cash flow through proactive follow-up and cash application practices. Implemented collections process improvements to reduce outstanding receivables and resolved disputed invoices to lower escalation rates and support record-setting cash flow.

Accounts Receivable Collections Management Cash Application Process Improvement Client Relationship Management Stakeholder Management NetSuite Reporting

Administrative Assistant

Quala Industrial Services

Jan 2015 - Jan 2020 (5 years)

Provided administrative and executive support while overseeing accounts receivable/payable, billing, collections, and work order workflows to ensure accurate operations. Built commission, expense, and sales reports to improve executive visibility and responded to stakeholder inquiries to strengthen customer satisfaction.

Accounts Receivable Accounts Payable Billing Collections Work Orders Expense Reporting HR Support Customer Service

Office Administrator

Uvac, Inc. / Star Texas Truck

Jan 2008 - Jan 2015 (7 years)

Served as Office Administrator and Executive Assistant to the President, managing purchase orders/work orders and accounts receivable/payable. Conducted internal audits and reconciliations for bank and credit card statements while administering payroll and maintaining compliance with state and federal regulations.

Accounts Receivable Accounts Payable Work Orders Internal Audit Bank Reconciliation Account Reconciliation Payroll Administration & Compliance

Office Administrator

Discovery Resource

Jan 2000 - Jan 2008 (8 years)

Managed daily office operations including human resources, payroll, accounts receivable/accounts payable, and collections support for other departments. Ensured smooth administrative execution across multiple core business functions.

Office Administration Human Resources Support Payroll Accounts Receivable Accounts Payable Collections Support & Compliance

Health Claims Examiner/Underwriter

American National Insurance Company

Jan 1985 - Jan 2000 (15 years)

Processed health claims and performed underwriting activities using medical records and diagnostic/procedure coding to support accurate claim decisions. Applied HIPAA-aware documentation practices and used ICD-9 and CPT information to evaluate and adjudicate health-related requests.

Underwriting Medical Records Review ICD 9 CPT Coding Claims Evaluation HIPAA compliance