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Salary
≈ $37k – $84k per year (Estimated)
Location
In office (Sioux City)
Visa
H-1B filings in 12 months: 4

Confirmed on the employer's own hiring board on Nov 3, 2026. First seen by Alion on Oct 30, 2026. Darling Ingredients scores A on the Alion truth index.

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 Cooker Operator is responsible for the operation of PLC to control the machinery. They must monitor pumps and grinders to ensure quality assurance.

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.

  • Always conduct yourself in a safe and controlled manner
  • Blow grease lines as required
  • Clean up to include but not limited to shoveling the floor, hosing floors and machinery down, using wheelbarrows and PIT's.
  • Operate the cooking process within selected parameters
  • Document plant operations per our GMP program
  • Notify shift manager of any issues or maintenance problems
  • Attendance at all safety meetings required
  • Other duties as assigned

Minimum Qualifications

  • High school diploma or GED

Preferred Qualifications

  • Manufacturing, industrial, or agricultural experience preferred.
  • Prior experience in a rendering facility or production environment preferred.
  • Works well with others in a team environment.
  • Dependable; reliable; ability to work nights and/or weekends as needed.
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