Payroll & HR Manager — Onsite (Sonoma) | 401(k) & PTO

GMH Builders Inc; Sonoma (CA); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Medical and dental coverage

401(k) deferral and employer contrib.

Annual performance-based bonus plan

Paid time-off

Health insurance

Job summary

GMH Builders Inc is hiring a full-time on-site Payroll Manager / Human Resource Administrator for the Sonoma, CA office. You will oversee weekly payroll for 40 to 50 employees, manage payroll payments via ACH, and ensure wage and hour compliance.

You will administer the 401(k) plan, handle reimbursements and garnishments, support onboarding, track PTO, maintain records, and help resolve workplace issues while upholding confidentiality.

Qualifications

• 3+ years of Payroll and HR experience.
• Associates or Bachelors degree preferred.
• Knowledge of current employment laws and regulations.
• Strong communication and interpersonal skills.
• Solid judgment and problem-solving skills.
• Strong computer skills, including Excel.
• Experience with Spectrum construction accounting software is a plus.

Responsibilities

• Run weekly payroll for 40 to 50 employees, including both office and field payroll checks.
• Upload payroll payments via ACH to the bank.
• Monitor wage and hour law compliance and meet payroll reporting requirements.
• Submit and track weekly payroll tax payments.
• Administer the 401(k) plan, including weekly contributions and annual census reporting.
• Process monthly auto allowance payments.
• Handle employee reimbursements and garnishments.
• Track PTO and maintain a PTO calendar.
• Maintain accurate employee records and confidentiality.
• Support new hire onboarding and outgoing employee processing.
• Investigate employee complaints and policy violations; recommend resolutions.

Skills

Communication

Interpersonal

Judgment

Problem-solving

Excel

Education

Associates or Bachelors degree

Tools

Spectrum construction accounting software

Excel

Job description

GMH Builders Inc is hiring a full-time on-site Payroll Manager / Human Resource Administrator for the Sonoma, CA office. You will oversee weekly payroll for 40 to 50 employees, manage payroll payments via ACH, and ensure wage and hour compliance.

You will administer the 401(k) plan, handle reimbursements and garnishments, support onboarding, track PTO, maintain records, and help resolve workplace issues while upholding confidentiality.