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Payroll and HR Coordinator
Katalyst Systems Impact (KSI)

Katalyst Systems Impact (KSI)
Posted 2026-08-27
About the role
Payroll and HR Coordinator Location: Tempe, AZ | In-Office A well-established construction and steel fabrication company, is seeking a Payroll & HR Coordinator to support operations across their two affiliated businesses. This is a hands-on, detail-oriented role designed for someone who thrives in a fast-paced environment and is eager to grow their skills in payroll, compliance, and HR administration. This position works closely with the CFO, providing support on payroll, benefits administration, employee onboarding / offboarding, and various compliance reporting functions. You’ll play a key part in ensuring smooth day-to-day operations across both companies. Key Responsibilities Payroll & Benefits Process weekly payrolls for both the General Contracting & Steel Fabrication company Manage employee onboarding and terminations Administer 401(k) contributions and ensure accurate recordkeeping Oversee group insurance enrollments, changes, and terminations Coordinate open enrollment and employee communications Maintain accurate employee records and ensure confidentiality Compliance & Reporting Assist with weekly, quarterly, and annual payroll reporting Help prepare documentation for audits and insurance renewals Maintain all corporate licensing for both companies, including: State, County, and City-level business licenses Contractor licenses and renewals Annual reports and compliance filings Withholding and unemployment account maintenance Administrative Support Maintain organized and secure employee files for both companies Support employee-related activities and communications Provide assistance with various administrative and accounting tasks as needed Preferred Qualifications 3+ years of experience in payroll, HR, or accounting support Experience in the construction industry preferred Knowledge of multi-state payroll and benefits administration a plus Strong organizational skills and attention to detail Proficiency with Microsoft Office (Excel, Word, Outlook) Ability to manage sensitive information with confidentiality Eagerness to learn and grow into broader accounting and HR responsibilities What We Offer Competitive weekly pay (commensurate with experience) Training and mentorship from an experienced CFO Opportunities for professional growth across multiple business entities Health, dental, and vision insurance 401(k) retirement plan Paid vacation and holidays Supportive, team-oriented environment Work Location: Tempe, Arizona (100% in-office role) Work Remotely: No
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