Grain Processing Corporation (GPC) has been a trusted supplier of premium grain‑based ingredients for over eight decades, serving iconic brands across the food, beverage, industrial, agricultural, and pet care sectors. Headquartered in Muscatine, Iowa, GPC operates a nationwide network of facilities that source and transform corn, chickpeas, soy, and other pulses into high‑quality products designed for diverse applications. As a fourth‑generation, family‑owned business, GPC blends deep industry expertise with cutting‑edge technology to innovate and anticipate evolving customer needs. This commitment to quality, sustainability, and technological advancement distinguishes GPC as a leader in delivering ingredients that touch the lives of millions worldwide.
Open Positions
ENVIRONMENTAL ENGINEER
2+ years of experience in environmental engineering or environmentally oriented positions, Bachelor's degree in Chemical Engineering, Environmental Engineering, Environmental Science, or equivalent experience
PROCESS OPERATOR
High school degree or above, computer proficiency, ability to speak, read, and write English, mechanical aptitude, ability to work independently, and 12-hour rotating shift operation
INSIDE SALES REPRESENTATIVE
Bachelor's degree in a relevant field, technical sales or account management experience, strong communication and analytical skills
OPERATIONS SUPPORT SERVICES
High school diploma, computer proficiency, and decision making ability required
QUALITY CONTROL ANALYST
Analytical testing, laboratory maintenance, and communication skills required. Associate's degree in a Science related discipline and previous laboratory experience preferred
QUALITY ASSURANCE INSPECTOR
High school diploma or GED, valid driver’s license, and ability to lift up to 55 lbs
SALES INTERN
Bachelor's degree in business-related fields, strong communication skills, detail-oriented and proactive learner