Senior Human Resources (HR) Generalist

We are looking for an experienced HR and payroll specialist to join a construction services organization on a contract basis in Englewood, Colorado. This role will provide immediate support across payroll, employee administration, benefits coordination, and day-to-day HR operations for a multi-state workforce. The position is best suited for someone who can work independently, bring structure to complex processes, and confidently manage detailed payroll and compliance matters in a fast-moving environment.

Responsibilities:

• Manage weekly payroll processing for approximately 200 employees in multiple states, ensuring timely and accurate pay through ADP Workforce Now.
• Oversee core HR administration, including employee data maintenance, onboarding activities, separations, benefits updates, and payroll-related recordkeeping.
• Review and reconcile historical payroll information, identify inconsistencies, and correct missing or inaccurate employee and pay data.
• Partner with benefit and retirement plan providers to investigate and resolve contribution issues, enrollment discrepancies, and related administrative exceptions.
• Support payroll activities tied to prevailing wage requirements, labor distribution by job site, and certified payroll documentation.
• Assist with year-end payroll tasks, benefits renewal preparation, and open enrollment coordination to maintain continuity across HR operations.
• Create, refine, and document payroll and HR procedures, internal controls, and administrative workflows to improve consistency and accuracy.
• Use advanced Excel skills to analyze payroll records, prepare reports, manipulate large data sets, and support bulk updates within HR systems.
• Proven hands-on experience administering payroll and HR processes using ADP Workforce Now.
• Demonstrated background managing multi-state payroll, reconciliations, and payroll issue resolution in a high-volume setting.
• Strong knowledge of payroll tax practices, employee deductions, compliance requirements, and payroll administration standards.
• Experience supporting benefits administration, including 401(k) programs, COBRA, and employee enrollment activity.
• Working knowledge of prevailing wage payroll and certified payroll reporting requirements.
• Advanced Excel capabilities, including formulas, data cleanup, reporting, and large-file management.
• Ability to work independently, prioritize effectively, and bring order to an unstructured operational environment.
• Construction industry experience or prior involvement in payroll cleanup or system-related process stabilization is highly preferred.