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Salary
≈ $35k – $79k per year (Estimated)
Location
In office (Des Moines)
Visa
H-1B filings in 12 months: 4

Confirmed on the employer's own hiring board on Oct 21, 2026. First seen by Alion on Oct 19, 2026.

Overview
Company
Impact
Profile match
Darling Ingredients is a publicly traded company headquartered in Irving, Texas, that collects and recycles animal by-products, used cooking oil and bakery residuals into feed ingredients, fertilizers, collagen and gelatin, and renewable fuels. Founded in 1882 as a small Chicago rendering company, it operates more than 260 facilities worldwide under brands such as DAR PRO, Rousselot, Sonac, Rendac and EnviroFlight, and co-owns the Diamond Green Diesel renewable diesel venture. Its job board lists route and semi drivers, production and boiler operators, mechanics and electricians, plant supervisors and maintenance managers, plus accounting and audit staff.

The Operator is responsible for the operation of the computer controlled process equipment, cooker, machinery, and evaluation of any process problems in addition to performing product quality testing.

Essential Duties/Responsibilities

Nothing in this job description restricts management's right to assign or reassign duties and responsibilities to this job at any time.

  • Oversees rendering process from raw material bin to finished goods storage.
  • Maintain steady flow of material to cooker.
  • Maintain cooker temperature, rate, and steam at peak operating levels.
  • Monitor evaporation rate to maintain rate per hour according to requirements.
  • Control flow of material to presses and to finished goods storage.
  • Monitor control panel and various gauges to accomplish process.
  • Operate pollution control system including air/odor control system and wastewater control.
  • Responsible for boiler start up and operation.
  • Perform periodic preventative maintenance on all equipment in process.
  • Monitor machinery; bring all problems to attention of manager.
  • Assures equipment and work area is clean after each shift.
  • Maintains safety as top priority in accordance with all company safety rules and regulations.

Minimum Qualifications

  • Must be at least 18 years of age.
  • One year of Manufacturing, industrial, or agricultural experience preferred.

Preferred Qualifications

  • Knowledge of mechanical rendering process preferred.
  • Chemical manufacturing experience a plus.
  • Good mechanical aptitude and equipment troubleshooting; skilled in general mechanics and safe operation of equipment.
  • Basic math skills; ability to compute decimals and percentages.
  • Basic computer skills.
  • Good oral and written skills.
  • Ability to deal with minor problems involving equipment or various situations.
  • Ability to work nights and/or weekends as needed.
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