Job Title: Part-time ADP Workforce Now Payroll Specialist
Job Description

This part-time contract role offers the opportunity to lead payroll operations for a mid-size firm in Woodinville, WA while managing one payroll team member. You will oversee end-to-end payroll processing in ADP Workforce Now, support employees with payroll and benefits questions, and ensure accurate, compliant, and timely payroll delivery. The position is scheduled for approximately 24 hours per week across three days and is expected to last 3–5 months, with a pre-employment background check required.

Responsibilities

• Process end-to-end payroll runs in ADP Workforce Now, including data entry, validation, and final approvals.
• Calculate and verify all payroll-related taxes, deductions, and contributions, ensuring accurate gross-to-net results.
• Perform regular gross-to-net audits and quality control checks to ensure payroll accuracy and compliance.
• Maintain and update ADP Workforce Now configuration, including workflows, integrations, and user permissions.
• Administer benefits, including open enrollment, qualifying life events, and ongoing enrollment changes.
• Reconcile benefit invoices and resolve discrepancies in coordination with payroll and benefits data.
• Manage the applicant tracking system (ATS) to support talent processes and maintain accurate applicant data.
• Onboard new hires by setting them up in ADP Workforce Now, ensuring complete and accurate employee records.
• Monitor and manage time and attendance data, including timecard approvals, PTO tracking, and attendance discrepancies.
• Generate and analyze customized reports on payroll, labor costs, turnover, and related HR metrics.
• Support general ledger activities related to payroll accounting, including reconciliations and audit support.
• Serve as the primary point of contact for employees regarding pay stubs, benefits information, and portal navigation.
• Provide excellent customer service to internal stakeholders, resolving payroll and benefits issues promptly and professionally.
• Oversee and manage the work of one payroll team member, providing guidance and ensuring high-quality output.
• Participate in internal audits and quality assurance reviews to strengthen payroll processes and controls.

• At least 5 years of experience working with ADP payroll software.
• Strong, demonstrable experience with ADP Workforce Now, including payroll processing and system administration.
• Proficiency in payroll processing, including calculations of taxes, deductions, and gross-to-net pay.
• Experience with payroll accounting, reconciliations, and general ledger interfaces.
• Ability to perform payroll audits and quality control checks with strong attention to detail.
• Advanced Microsoft Excel skills, including vlookups and pivot tables.
• Strong reporting and analysis skills related to payroll, labor costs, and HR data.
• Excellent customer service skills for supporting employees and internal stakeholders.
• Ability to manage and support another payroll team member.
• Strong organizational skills and the ability to manage part-time hours effectively while meeting deadlines.

• Experience with Kronos or similar time and attendance software.
• background in benefits administration, including open enrollment and qualifying life events.
• Experience managing or supporting an applicant tracking system (ATS).
• Familiarity with quality assurance and audit processes in payroll and HR environments.
• Comfort working with multiple systems and integrations related to payroll and HR data.

This is a part-time contract position based in Woodinville, WA, working approximately 24 hours per week across three days, with some variation such as a 24-hour week followed by a 5-hour week as needed. The role is expected to last 3–5 months and involves on-site work in a fun, collaborative team environment located in a building next to a restaurant and above a winery space. Free parking is available, and you will work primarily with ADP Workforce Now, Microsoft Excel, and related payroll and timekeeping systems such as Kronos. A pre-employment background check is required.

Job Type & Location

This is a Contract position based out of Woodinville, WA.

The pay range for this position is $30.00 - $38.00/hr.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
• Medical, dental & vision
• Critical Illness, Accident, and Hospital
• 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available
• Life Insurance (Voluntary Life & AD&D for the employee and dependents)
• Short and long-term disability
• Health Spending Account (HSA)
• Transportation benefits
• Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)

This is a hybrid position in Woodinville,WA.

This position is anticipated to close on Jun 30, 2026.

About Aston Carter

Aston Carter provides world-class corporate talent solutions to thousands of clients across the globe. Specialized in accounting, finance, human resources, talent acquisition, procurement, supply chain and select administrative professions, we extend the capabilities of industry-leading companies. We draw on our deep recruiting expertise and expansive network to meet the evolving needs of our clients and talent community with agility and excellence. With offices across the U.S., Canada, Asia Pacific and Europe, Aston Carter serves many of the Fortune 500. We are proud to be a ClearlyRated Best of Staffing® Platinum Award winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email astoncarteraccommodation@astoncarter.com for other accommodation options.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.