Senior HR Office Administrator

Job Title: Senior HR Office Administrator

Location: New Rochelle, NY

Job Type : Full time

Work schedule: Normal business hours Monday-Friday

Pay Rate: $28 per hour

Job Description:

We are seeking a highly organized and experienced Senior Office Administrator to manage and streamline day-to-day operations at our office. This position requires strong technical proficiency—particularly with Microsoft 365—and a proven background in office management, finance administration, HR support, and internal coordination. The ideal candidate is proactive, detail-oriented, and an excellent communicator with a solid understanding of both administrative workflows and IT systems.

Key Responsibilities

• Oversee and coordinate daily office operations to ensure organizational efficiency and effectiveness.
• Maintain and implement office policies and procedures; document and log all key functions.
• Manage procurement, office supplies, equipment, and inventory.
• Administer accounts payable (AP) and accounts receivable (AR) for Base One programs.
• Perform HR functions including onboarding, offboarding, performance tracking, and benefits administration.
• Manage payroll tasks: collect and review timesheets, process payroll through Paychex, and perform reconciliation.
• Handle contract management including tracking of purchase orders (POs), RFPs, bids, and vendor agreements.
• Act as the primary liaison for internal and external communications.
• Support Senior Directors with administrative tasks and calendar coordination.
• Supervise and train administrative staff as needed.
• Ensure smooth communication within the team and with external partners.

Minimum Qualifications

• Associate’s degree in Business Administration, Human Resources, Information Technology, or related field.
• 5–10 years of experience in office administration within a mid-size to enterprise organization.

Required Skills & Competencies

• Proficiency in Microsoft 365 tools including Outlook, Excel, SharePoint, Teams, and OneDrive.
• Hands-on experience with QuickBooks for AP/AR.
• Familiarity with IT desktop support systems and general troubleshooting.
• Strong multitasking, time management, and organizational abilities.
• Excellent verbal and written communication skills.
• Ability to work independently and collaboratively in a fast-paced environment.
• High attention to detail with strong problem-solving skills.