Senior Payroll Specialist - Government Contracting

Senior Payroll Specialist – Government Contracting (Temp-to-Hire)

Chantilly, VA | On-Site | Deltek Costpoint

We are hiring a Senior Payroll Specialist with deep Government Contracting (Gov Con) payroll experience to support a high-volume, client-facing outsourced accounting environment. This is a temp-to-hire role and requires hands‑on ownership of payroll from start to finish.

This position is best suited for a senior or supervisor-level payroll professional with strong Costpoint expertise and the confidence to work directly with government contractor clients.

• Contract: Up to $60/hour

• Conversion Salary: $100,000 – $120,000

• Chantilly, VA

• Fully on-site
  , Monday–Friday

• Process bi-weekly, semi-monthly, and weekly payrolls

• Heavy use of Deltek Costpoint Payroll

• Import and audit timekeeping data for exempt and non-exempt employees

• Payroll accounting,
  journal entries
  , and general ledger reconciliations

• Payroll tax compliance (monthly, quarterly, annual filings)

• Garnishments, liens, overtime, off-cycle payments, and leave accruals

• Process and reconcile 401(k) contributions and loans

• Support internal and external payroll audits

• Build payroll reports and trackers using Excel

• Set up new state tax accounts and manage multi-state payroll compliance

• Act as a client-facing payroll subject matter expert
  , resolving payroll inquiries

• 5+ years of CURRENT Government Contracting payroll experience

• 5+ years of Deltek Costpoint payroll experience (required)

• Experience with
  ADP or Paylocity

• Strong payroll accounting and reconciliation skills

• Knowledge of payroll tax regulations and compliance rules

• Excellent communication skills; client interaction is a core function

• Ability to work independently in a fast-paced environment

• U.S. Citizenship required

• Senior / Supervisor-level payroll professional

• This is not an entry-level or transactional payroll role