Plant Clerk

Plant Clerk Job description Thompson Pipe Group is a privately held family business of engineers, contractors, and manufacturers based in Rialto, California. From humble beginnings, we built a family of products to meet the needs of all kinds of infrastructure. Each generation of products is better than the previous. Thompson Pipe Group is now the largest and most diverse drainage, sanitary, pressure and trench-less pipe provider, with manufacturing locations across the country and serving not just the US but all North America.

Please visit our website at www.thompsonpipegroup.com Thompson Pipe Group is currently looking for a Production Control Plant Clerk.

Pay range

is $20.00-$28.00.

Position Summary

This position is responsible for accurately processing daily production data and managing inventory transactions within the company’s ERP system. This role ensures timely and accurate entry of manufacturing labor, materials, and inventory information to support operational efficiency, financial accuracy, and supply chain integrity in a pipe manufacturing environment.

Key Responsibilities

Production Processing Enter daily production data into the ERP system, including pipe runs, labor usage, material usage, scrap, and finished goods quantities. Verify accuracy of production reports against shop floor documentation. Reconcile discrepancies between physical production and system records. Generate and distribute daily, weekly, and monthly production reports.

Assist supervisors with production tracking and performance metrics. Inventory Management Support material receipts, transfers, shipments and inventory adjustments in the ERP system. Maintain accurate raw material, WIP (work-in-progress), and finished goods inventory records. Perform cycle counts and assist with full physical inventory counts.

Investigate and resolve inventory variances. Coordinate with warehouse, purchasing, and shipping teams to ensure proper material flow and documentation. ERP System Support Ensure all transactions are recorded within established deadlines. Maintain item master data accuracy (as assigned). Support month-end closing processes related to production and inventory.

Assist with ERP troubleshooting and communicate system issues to IT or management. Administrative Support Maintain organized digital and physical production records. Prepare documentation for audits and compliance reviews. Support cross-functional communication between production, warehouse, purchasing, shipping and accounting teams.

Duties, responsibilities and activities may change at any time with or without notice Qualifications High school diploma or equivalent required; Associate’s or Bachelor’s degree in business, supply chain, or related field preferred. 1–3 years of experience in manufacturing, inventory control, or data entry (pipe or metal fabrication industry experience preferred).

Hands-on experience with an ERP system (e.g., IFS, SAP ERP, Oracle NetSuite, Microsoft Dynamics 365). Strong data entry accuracy and attention to detail. Proficiency in Microsoft Excel and general computer skills. Basic understanding of manufacturing processes and inventory control principles. Strong organizational and communication skills.

Core Competencies Attention to Detail Time Management Analytical & Problem-Solving Skills Accountability & Integrity Team Collaboration Work Environment: While performing the duties of this job, the employee is frequently exposed to fumes or airborne particles, moving mechanical parts and vibration. The noise level in the work environment can be loud.

Physical Demands: While performing the duties of this job, the employee is occasionally required to stand; walk; sit; use hands to finger, handle, or feel objects, tools or controls; reach with hands and arms; climb stairs; talk or hear. The employee must occasionally lift or move products and supplies, up to 40 pounds.

Position Type/Expected Hours of Work : This is a full-time position, with regular workdays Monday through Friday. Overtime will be required based on operational needs. Saturday work is expected approximately 50% of the time, and Sunday work approximately 25% of the time. Travel: No travel required