Payroll Specialist

I am looking for a payroll specialist that can provide a full suite of services related to my payroll needs. Specifically, I need assistance with payroll processing, payroll tax filing and compliance, as well as implementation and training of payroll software. Additionally, I need advice or information about employee benefits administration, though I'm not sure yet what assistance I may need in this area. My company has more than 50 employees on payroll, so experience managing payroll for larger companies is important.