Office Manager

Sibelco Group•South Windsor, CT

About The Position

Sibelco is seeking an organized, technically proficient Office Manager (described in the posting as a Plant Administrator) to support the daily administrative, operational, and customer service functions of its South Windsor facility. The position partners with plant leadership, employees, customers, suppliers, and transportation providers, supporting accurate administrative processes, reporting, purchasing, payroll support, inventory transactions, and operational documentation. The role also supports plant workflow through transportation and logistics coordination, inventory control, scale operations, and communication with corporate departments. The Office Manager maintains accurate records and compliance-related files, responds to routine inquiries, and provides administrative support to plant leadership and special projects.

Requirements

High school diploma or equivalent required.
Demonstrated experience processing payroll, purchasing transactions, reporting, and office administration activities.
Advanced proficiency in Microsoft Office Suite, including Excel, Word, Outlook, and PowerPoint.
Experience working within ERP systems.
Strong analytical skills and ability to manage data, reports, and multiple priorities accurately.
Excellent organizational, time management, and problem-solving skills.
Effective written and verbal communication skills, including the ability to interact professionally with employees, customers, suppliers, and transportation partners.
Ability to handle confidential information with discretion and professionalism.
Strong attention to detail and commitment to process accuracy.

Nice To Haves

Associate's degree or additional business coursework preferred.
Three or more years of administrative, office management, plant administration, or related experience in a manufacturing, recycling, logistics, or industrial environment preferred.
SAP experience strongly preferred.

Responsibilities

Support daily plant administrative and office operations to ensure efficient business processes and continuity of operations.
Process payroll and maintain employee administrative records, including timekeeping support and employee system enrollment.
Create and manage purchase orders, receipt of goods and services, and other procurement-related transactions.
Maintain accurate operational, inventory, shipping, receiving, and production records within SAP and other business systems.
Prepare, review, and distribute reports for internal stakeholders, customers, and corporate partners.
Coordinate transportation and logistics activities, including outbound shipments, freight requests, inventory transfers, and communication with carriers and rail service providers.
Support inventory control through reporting, transaction entry, and reconciliation activities.
Serve as a primary point of contact for customers, suppliers, haulers, visitors, and other business partners, responding to inquiries and resolving routine administrative issues.
Coordinate purchasing of office and operational supplies to support plant needs.
Assist with scale operations, transaction processing, and documentation as needed to support plant workflow.
Support employee questions and facilitate communication with corporate departments, including Human Resources and Payroll.
Maintain accurate records, documentation, and compliance-related administrative files.
Provide administrative support to plant leadership and assist with special projects and additional duties as assigned.