Office Manager

STP Investment Services • West Chester, PA

10h • Hybrid

About The Position

The Office Manager plays a key role in ensuring the smooth day-to-day operations of the West Chester office while supporting both Finance and Human Resources administrative functions. This role is responsible for managing accounts payable activities, office administration, and core HR support processes, acting as a central point of coordination across teams. The ideal candidate is highly organized, detail-oriented, and comfortable working across operational, financial, and people-related responsibilities.
This role partners closely with Finance, Human Resources, and business leaders to maintain efficient office operations and supports a positive employee experience in alignment with STP’s values and operational standards.

Requirements

• High school diploma or GED equivalent required
• 3+ years of experience in office management, administrative, HR support, or accounting support roles.
• Experience with accounts payable processing strongly preferred.
• Experience supporting HR administrative functions strongly preferred.
• Proficiency with Microsoft Office (Outlook, Excel, Word); experience with HRIS or accounting systems a plus.
• Strong organizational skills with the ability to manage multiple priorities in a fast-paced environment.

Responsibilities

• Serve as the primary point of contact for the West Chester office, ensuring efficient daily operations.
• Manage relationships with building management, office vendors, and service providers.
• Oversee office supplies, equipment, mail handling, and general office organization.
• Coordinate office-related logistics, including meetings, visitors, and internal events as needed.
• Process accounts payable transactions, including invoice review, coding, and submission for approval.
• Maintain accurate records of invoices, payments, and vendor documentation.
• Liaise with Finance to resolve invoice discrepancies and ensure timely payments.
• Support vendor onboarding and maintain up-to-date vendor files.
• Assist with ad hoc financial and administrative requests as needed.
• Provide administrative support to the HR team & related committees across core people processes.
• Assist with onboarding and offboarding activities, including documentation, system access coordination, and orientation logistics.
• Maintain employee records and ensure data accuracy across HR systems.
• Support benefits administration, employee communications, and general HR inquiries.
• Assist with compliance-related documentation such as audits, policy acknowledgments, and employment records.

Benefits

• Competitive compensation plus a performance bonus
• Unlimited PTO
• 10 Paid Holidays
• Strong 401k Matching program
• Hybrid work schedule (In-Office Days – Tuesday & Wednesday)
• Competitive, highly subsidized health benefits (Medical, Vision, Dental, Life, and Disability Insurance)
• Volunteer Time Off (VTO). We pay you to do good in your community!

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level
• Education Level: High school or GED
• Number of Employees: 101-250 employees