Retirement Plan & Payroll Specialist

We are seeking a Retirement Plan & Payroll Specialist to join our Human Resources team. This role serves as the subject matter expert on all retirement plan administration while ensuring accurate, compliant payroll processing for our dedicated staff. This part-time, onsite position in Arlington, Virginia is ideal for an experienced professional seeking work-life balance without sacrificing impact or complexity.

• Manage daily operations of 401(k), 457(b), 457(f), and Pension plans
• Ensure compliance with ERISA, IRS, and other regulatory requirements
• Coordinate plan audits, annual testing, filings (e.g., Form 5500), and employee communications
• Act as liaison with plan vendors and internal stakeholders
• Develop and maintain plan documentation and employee education materials
• Support bi-weekly payroll processing and reporting for both salaried and hourly employees
• Verify accuracy of payroll data, benefit deductions, and tax with holdings
• Communicate with tax agencies and vendors to resolve compliance issues
• Prepare payroll-related reports and assist with audits and adjustments
• Triage and assign incoming HR tickets
• Manage and resolve retirement-related employee inquiries promptly and professionally
• Deliver high‑quality service and uphold HR service standards