HR Administrator - Temp Assignment: Hiring & Payroll

Kastle Systems; Seattle (WA); On-site; USD 71,635,000 - 91,610,000; Full time

Job summary

Kastle Systems is seeking a detail‑oriented HR Administrator for a temporary assignment to support talent acquisition, payroll administration, HR reporting, and process documentation in a fast‑ paced environment.

The role emphasizes coordinating recruiting logistics, ensuring accurate HR records, and assisting with benefits and payroll tasks while maintaining confidentiality and professionalism.

Qualifications

• 1+ year in an administrative, HR, recruiting, or similar support role.
• Excellent organizational skills and attention to detail.
• Strong written and verbal communication; ability to handle confidential information.

Responsibilities

• Coordinate interview scheduling and recruitment logistics to support a positive candidate experience.
• Provide administrative support across recruiting processes, postings, ATS, interviewing, and onboarding activities.
• Support benefits and payroll administration, including employee updates and leave tracking.
• Maintain accurate employee records across HR systems and trackers.
• Assist with HR reports, trackers, and workforce data for ongoing activities.
• Develop and document HR processes, workflows, templates, and resources to promote consistency.

Skills

Organizational skills

Attention to detail

Communication skills

Discretion/confidentiality

MS Office proficiency

Spreadsheet proficiency

Recruiting logistics

Tools

Microsoft Office

Excel

Applicant Tracking System (ATS)

Job description

Kastle Systems is seeking a detail‑oriented HR Administrator for a temporary assignment to support talent acquisition, payroll administration, HR reporting, and process documentation in a fast‑ paced environment.

The role emphasizes coordinating recruiting logistics, ensuring accurate HR records, and assisting with benefits and payroll tasks while maintaining confidentiality and professionalism.