Interim Senior Payroll Lead (Hybrid, AI-Driven)

BrainWorks; Boulder (CO); Hybrid; USD 90,000 - 120,000; Full time

Job summary

BrainWorks is seeking a Senior Payroll Administrator for a 6–9 month interim assignment based in Boulder, CO. The role oversees biweekly payroll for 200+ employees across multiple states using Paychex, with a strong emphasis on efficiency and automation.

The ideal candidate has 10+ years of payroll experience, strong Excel skills, and a willingness to leverage AI tools to streamline processes. Collaboration with HR and Finance is key, as is documentation of new workflows.

Qualifications

• 10+ years of payroll experience supporting 200+ employees across multiple states.
• Experience with Paychex payroll processing and tax administration.
• Experience with benefits deductions, 401(k) contributions, and employee changes.
• Strong Excel skills, including PivotTables and VLOOKUPs.
• Willingness to use AI tools to improve workflows.
• Strong communication with HR and Finance.

Responsibilities

• Process biweekly payroll and taxes for 200+ employees across multiple states.
• Manage payroll changes: new hires, terminations, and bonuses.
• Oversee benefits deductions and 401(k) contributions.
• Identify opportunities to automate payroll processes.
• Build Excel reports using PivotTables and VLOOKUPs.
• Use AI tools to streamline workflows and improve efficiency.
• Work with HR and Finance to resolve payroll issues and improve communication.
• Document updated processes and recommend payroll system improvements.

Skills

Payroll processing

Paychex

Excel PivotTables

VLOOKUPs

AI tools

HR & Finance liaison

Payroll certification

Deltek

Multi-state payroll

Education

Payroll certification preferred

Tools

Deltek

Job description

BrainWorks is seeking a Senior Payroll Administrator for a 6–9 month interim assignment based in Boulder, CO. The role oversees biweekly payroll for 200+ employees across multiple states using Paychex, with a strong emphasis on efficiency and automation.

The ideal candidate has 10+ years of payroll experience, strong Excel skills, and a willingness to leverage AI tools to streamline processes. Collaboration with HR and Finance is key, as is documentation of new workflows.