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113121-QC Tech II

Heidelberg Materials · Mccook, IL · $62,400–$76,967 a year · Full time

Posted Sep 3, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a time you found a mistake in your own testing.

What they are checking: Whether they own errors and fix them, which builds trust in their results.

How comfortable are you doing physical field work like climbing stockpiles in bad weather?

What they are checking: Whether they are ready for the hands-on side of sampling, not just lab work.

What would you do

A test shows the product is out of spec right before trucks are loading. What do you do?

What they are checking: Whether they stop shipping and tell the right people rather than letting bad material go out.

Operations says your test is wrong because it slows production. How do you respond?

What they are checking: Whether they stand by their data while working calmly with operations.

About the work

Walk me through how you'd run a sieve analysis on an aggregate sample.

What they are checking: Whether they know a core aggregate test and the steps that keep results accurate.

How do you collect a sample from a stockpile so it represents the whole pile?

What they are checking: Whether they understand sampling methods, since a bad sample makes every test wrong.

How do you notice a trend in test results before it becomes a problem?

What they are checking: Whether they track data over time, which the posting lists as a duty.

What do you know about DOT specifications for aggregates?

What they are checking: Whether they understand the standards that many customers' projects require.

How do you keep lab equipment calibrated and records organized?

What they are checking: Whether they maintain the systems that make results trustworthy during audits.

How do you explain a quality problem to someone who isn't technical?

What they are checking: Whether they can share results clearly so others can act on them.

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The full job description

As published by Heidelberg Materials.

Line of Business: Aggregates Pay Range: $62,400.00 – $76,966.66 About Us Heidelberg Materials is one of the world's largest suppliers of building materials. Heidelberg Materials North America operates over 450 locations across the U.S. and Canada with approximately 9,000 employees. What You'll Be Doing • Perform quality control testing on raw materials, in-process materials, and finished products to ensure compliance with specifications. • Collect, prepare, and analyze samples in both laboratory and field environments, including physically obtaining and handling material samples. • Document and communicate test results accurately to support operational and quality objectives. • Monitor production quality trends and identify opportunities for continuous improvement related to product quality, processes, and operational efficiency. • Partner closely with operations and shipping teams to coordinate sample collection and maintain product quality, consistency, and regulatory compliance. What Are We Looking For • Quality control or materials testing experience is preferred, particularly in aggregates, construction materials, mining, quarry, or a similar industrial setting. • Strong analytical and problem-solving skills with the ability to interpret data, identify trends, and support continuous improvement. • Ability to follow testing procedures, maintain records, prepare reports accurately, and communicate testing results effectively. • Applicable IDOT certification is preferred but not required; Heidelberg Materials can provide applicable state certification training after hire. • Commitment to safety, teamwork, continuous improvement, and delivering high-quality results. Work Environment • Role operates in a combination of laboratory, quarry/production, and outdoor environments and is not a traditional climate-controlled laboratory setting. Employees will be exposed to varying temperatures, noise, dust, moving equipment, and active industrial operations. • Required PPE may include a hard hat, safety glasses, hearing protection, gloves, and steel-toe boots. • This is a hands-on role that requires working in both laboratory and outdoor industrial environments, including collecting samples and regularly handling/lifting approximately 40–50 pounds. What We Offer • Competitive base salary $62,400 - $73,325 • 401(k) retirement savings plan with an automatic company contribution as well as matching contributions. • Highly competitive benefits programs, including: • Medical, Dental, and Vision along with Prescription Drug Benefits. • Health Savings Account (HSA), Health Reimbursement Account (HRA) and Flexible Spending Account (FSA). • AD&D, Short- and Long-Term Disability Coverage as well as Basic Life Insurance. • Paid Bonding Leave, 15 days of Paid Vacation, 40 hours of Paid Sick Leave and 10 Paid Holidays. Equal Opportunity Employer - Minority / Female / Veteran / Disabled.

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