Senior Multi-State Payroll & HR Operations

Erik Mathes

240-***-**** ********@*****.*** Washington, DC Metro Area linkedin.com/in/EMathes Professional Summary

Senior Operations & HR Professional with 8+ years of experience specializing in the technical and financial infrastructure of scaling organizations. Expert in managing multi-state payroll for up to 900+ employees and overseeing complex HR operations for portfolios of up to 20 diverse clients. Proven track record in mitigating corporate risk through strategic insurance procurement (GL, D&O), federal grant compliance (SBIR/NIH), and the precise management of state tax (SUI/SIT) jurisdictions. Leveraging a Master’s in Diplomacy to apply high-level independent judgment and systems optimization across the nonprofit, political, and private sectors. Technical Skills & Core Competencies

● Payroll & HRIS: ADP Workforce Now (WFN), Paychex Flex, QuickBooks, Gusto, Everee, Workday, Fountain.

● Compliance: Multi-State Labor Laws, Tax Filings, PTO Accruals, FEC Reporting, Federal Grant Compliance.

● Data Management: Advanced Excel (VLOOKUPs, Pivot Tables), NGP VAN, Database Integrity. Professional Experience

Marico Consulting Remote

Human Resources Manager

October 2025 – Present

● Multi-State Tax & Payroll Administration: Execute full-cycle payroll processing while managing the opening and closing of State Unemployment Insurance (SUI) and State Income Tax (SIT) accounts across various jurisdictions to ensure continuous compliance.

● Risk Management & Insurance Procurement: Direct the acquisition and renewal of essential corporate insurance policies, including General Liability (GL), Directors and Officers (D&O), and Workers' Compensation, tailored to the specific risk profiles of each client.

● Regulatory Filings: Manage the accurate and timely filing of quarterly and annual wage reports, ensuring all state and federal labor department requirements are satisfied.

● Operational Oversight: Serve as the primary point of contact for client leadership on HR infrastructure, streamlining administrative workflows to support organizational scaling from small teams to mid-sized workforces.

Maryland Department of Aging Baltimore, MD

Executive Assistant

November 2023 – April 2025

● Strategic Coordination: Act as the primary administrative partner to the Secretary, facilitating statewide policy alignment through monthly meetings with 19 Area Agencies on Aging (AAA).

● Communications: Prepare briefing materials and policy summaries for the Maryland General Assembly, often focusing on workforce and aging network funding.

● Process Improvement: Developed a Constituent Tracker system to monitor and resolve public inquiries, improving departmental response times and data integrity. At Scale Remote HQ: Texas / Pennsylvania

HR / Operations Manager

June 2022 – November 2023

● Large-Scale Payroll: Managed end-to-end payroll processing for 900+ W2 employees across multiple states using ADP Workforce Now and QuickBooks.

● HRIS Administration: Served as primary administrator for ADP WFN, ensuring all personnel data, tax withholding, and direct deposit information remained current and secure.

● System Integration: Engineered a 24-hour integration system to sync new hire data with payroll and benefits platforms immediately upon onboarding.

● Financial Reporting: Generated weekly payroll cost reports and processed employee expense reimbursements with strict adherence to budget constraints. Novel Microdevices Baltimore, MD

Office Manager

November 2020 – June 2022

● Payroll Administration & Timekeeping: Managed weekly time-tracking and payroll data entry for laboratory and engineering staff, ensuring accurate allocation of hours across various project codes.

● Grant-Funded Financial Compliance: Oversaw procurement and payroll documentation to ensure 100% compliance with federal grant requirements (SBIR/NIH), maintaining audit-ready financial records.

● Accounts Payable & Vendor Management: Managed the full AP lifecycle for specialized laboratory equipment and reagents; reconciled monthly vendor statements and resolved billing discrepancies. For Our Future Action Fund Remote

HR / Operations Assistant

June 2020 – November 2020

● Onboarding: Streamlined the hiring pipeline for 150+ employees, managing background checks and training programs.

● Policy Development: Assisted in drafting and implementing new HR policies aimed at promoting workplace equity and standardizing remote work protocols. Field Strategies Washington, DC

Human Resources Consultant

May 2018 – March 2019

● Multi-State Operations: Coordinated multi-state payroll for 15+ simultaneous campaigns using Paychex Flex and QuickBooks.

● Regulatory Reporting: Handled complex pay structures (overtime, stipends) while maintaining accurate records for FEC reporting requirements.

● Audit & Reconciliation: Processed and reconciled staff expense reimbursements and corporate credit card transactions totaling $150K monthly.

Education

Masters in Diplomacy

Norwich University

Bachelor of Arts, Criminal Justice

University of Maryland, College Park

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