Description Our client in the Aerospace Industry is currently looking for an experienced Human Resources Assistant located in Valencia, California. As an HR Assistant, your focus will be on managing HR-related administrative tasks, including processing HR documents, maintaining HR systems, and providing excellent customer service. This role offers a long term contract employment opportunity. Responsibilities: • Administer and maintain HR systems such as ADP - Financial Services, ADP Workforce Now, and HRMS • Effectively manage ATS - Asynchronous Transfer Mode for efficient HR operations • Process and handle HR-related documents with a high level of accuracy • Carry out auditing tasks to ensure the quality and accuracy of HR data • Conduct background checks as part of the recruitment process • Manage benefit functions to ensure employees receive their entitled benefits • Deliver excellent customer service to address and resolve HR-related inquiries • Utilize the Ceridian system for efficient HR management • Ensure timely completion of HR tasks through the 'About Time' system. Requirements • Proficiency in ADP - Financial Services is required • Familiarity with ADP Workforce Now is essential • Knowledge of ATS - Asynchronous Transfer Mode is vital • Experience with Ceridian is necessary • Proficiency in HRMS is crucial • Familiarity with About Time software is beneficial • Auditing skills are required • Experience in conducting Background Checks is important • Understanding of Benefit Functions in HR is essential • Excellent Customer Service skills are imperative TalentMatch® ­Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles. Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more. Robert Half will consider for employment qualified applicants with arrest or conviction records in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information. © 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use (https://www.roberthalf.com/us/en/terms) .