Quality Assurance Technician Job Description

A quality assurance technician is the person on the plant floor who says whether a part, a lot or a batch matches what the drawing and the customer specification require. O*NET describes the occupation as inspecting, testing, sorting, sampling or weighing raw materials and fabricated or assembled parts for defects, wear and deviations from specifications, and it notes the work may call for precision measuring instruments and complex test equipment. In practice that means three checkpoints: the receiving dock, the production line and the shipping lane.

Receiving inspection. Purchased material arrives with a packing slip, a certificate of conformance and sometimes a material test report. The technician compares the paperwork against the purchase order, pulls a sample from the lot according to the plant's sampling plan, and checks the characteristics the control plan calls out: a bore diameter, a coating thickness, a hardness reading, a resin lot number. Material that passes goes to stock. Material that fails gets a red tag, a quarantine location and a nonconformance report.

In-process checks. On a machining or molding line, the technician approves the first piece after a setup or a tool change before the operator runs the rest of the order. After that come patrol checks at set intervals, with readings entered on control charts. A point outside the control limits, or a run of points drifting toward one side, is a signal to stop the line and call the supervisor and the process engineer before scrap piles up.

Final inspection and records. Before product ships, the technician confirms the traveler is complete, every required inspection is signed off and the labels match the order. The record is the product as far as an auditor or a customer is concerned. A clean nonconformance report names the drawing, the characteristic, the measured value, the lot and the quantity affected, so the material review board can disposition it as use-as-is, rework, return to vendor or scrap without chasing the technician for details.

The toolkit. Hand gauges do the daily work: calipers, micrometers, height gauges on a granite surface plate, pin and thread gauges, and an optical comparator for profiles. Coordinate measuring machines handle complex geometry. The software side shows up in O*NET's technology list for the occupation, which includes Wilcox Associates PC-DMIS for CMM inspection planning, Cybermetrics GageTrak for gauge calibration records, and Minitab for data analysis.

Food and consumer products plants. The same title in a food plant points the checks at food safety. Federal rules for human food facilities at 21 CFR 117.165 list verification activities that include calibration of process monitoring and verification instruments, product testing for a pathogen or other hazard, and environmental monitoring. The QA technician can be the one swabbing the zones, checking thermometers against a reference, challenging the metal detector with test wands and filing the records a preventive controls qualified individual reviews.

Education. BLS lists a high school diploma or equivalent as the typical entry-level education for quality control inspectors, followed by moderate-term on-the-job training. It also notes that postsecondary certificate programs teach quality control concepts such as inspection planning and auditing. As a rough guide, an associate degree in quality technology, manufacturing technology or a related field shortens the climb to technician work that involves statistics, CMM programming or supplier contact, and operators can also move into the role by learning on the floor.

Core skills. Blueprint reading comes first: a technician has to read title blocks, revision letters, general tolerances and geometric dimensioning and tolerancing (GD&T) callouts without guessing. BLS points to basic math for measuring, calibrating and calculating specifications, mechanical skills for working with test tools and machinery, and physical stamina, since some inspectors stand for long periods. Add to that the habits that keep records defensible: writing legibly or entering data cleanly, recording the actual reading rather than "OK," and knowing which gauge was used and when it was last calibrated.

Certifications. BLS describes certification as optional but says it may demonstrate a level of competence. Two ASQ credentials fit this job directly:

• Certified Quality Inspector (CQI), ASQ. Requires 3 years of full-time, paid, on-the-job experience in one or more areas of the CQI body of knowledge, with part of that requirement waived for some technical, military or trade school diplomas and college degrees.
• Certified Quality Technician (CQT), ASQ. Requires 4 years of on-the-job experience in the CQT body of knowledge. Only one waiver may be claimed: one year for a community college or vocational school quality technology certificate, two years for an associate degree, or three years for a bachelor's, master's or doctorate.

Both computer-delivered exams are one-part, 110-question tests with 100 scored questions, an exam time of 4 hours and 18 minutes, and a $460 fee, with $100 off the initial fee for ASQ members.

Other credentials that fit specific plants include the OSHA 10-Hour General Industry card (Occupational Safety and Health Administration outreach training) and, in food plants, the Preventive Controls for Human Food course from the Food Safety Preventive Controls Alliance. CMM training from the machine builder or the software vendor is worth asking for once you are running programs rather than just loading parts.

Experience. As a rough guide, 0 to 2 years of production, machining or inspection experience is a reasonable starting point for technician roles, and a few years of measured, documented work builds toward the ASQ experience requirements above.

Physical side. Expect safety glasses, steel-toe shoes, hearing protection in some areas, and lifting parts or totes onto a surface plate or into a CMM.

BLS projects employment of quality control inspectors to grow 3 percent from 2025 to 2035, about as fast as the average for all occupations. The occupation held 602,000 jobs in 2025, and the projection adds 15,200 over the decade. More useful for a job seeker is the openings figure: BLS expects about 66,700 openings a year on average, and it says many of them will come from the need to replace workers who transfer to different occupations or exit the labor force. In a plant, those openings come from people who move into other jobs and from retirements.

Pay depends on what the plant makes

Manufacturing is where this job lives. In May 2025, OEWS counted 382,920 people in the occupation working in manufacturing. Industry still moves the number. In transportation equipment manufacturing, which covers vehicle, aerospace and parts plants, the median wage for the occupation was $60,620 and the 90th percentile was $95,560. In food manufacturing, the median was $46,100 and the 90th percentile was $61,250. Across all industries, the national median for the occupation was $48,570. BLS does not report quality assurance technicians separately from inspectors, testers and sorters, so those figures cover the whole occupation.

Machine vision changes the inspection station

Camera-based inspection with deep learning is a tool worth understanding rather than just watching. Cognex's documentation for its VisionPro Deep Learning software describes each tool as a deep neural network. Its Red Analyze tool, in unsupervised mode, is trained only with normal, defect-free views and then judges how defective new images are; in supervised mode, it requires defect samples. Either way, someone has to collect and label representative images, decide what counts as a tolerable variation, test the system against known good and known bad parts, and retest after a product or lighting change. That validation work suits a quality technician who already knows the defect catalog.

Food plants: no traceability enforcement before July 2028

Technicians in food plants have a records project on the calendar. FDA's Food Traceability Rule, which covers foods on the Food Traceability List, requires covered firms to keep key data elements tied to critical tracking events and to provide information to FDA within 24 hours or a reasonable time FDA agrees to. The original compliance date was January 20, 2026. FDA proposed extending it by 30 months to July 20, 2028, and the Continuing Appropriations, Agriculture, Legislative Branch, Military Construction and Veterans Affairs, and Extensions Act of 2026 directed FDA not to enforce the rule before that date, a directive FDA says it intends to follow. Lot coding, receiving records and shipping records are where the QA technician's daily paperwork meets that rule.

Where the job leads

The technician seat connects to several next steps: quality engineer, supplier quality, internal auditor, calibration lab lead, or production supervisor. The path runs through documented skill: control charts you can explain, CMM programs you wrote, investigations you closed, and an ASQ credential once the experience requirement is met.

Dear Hiring Manager,

I am applying for the Quality Assurance Technician opening on your second shift. For the past three years I have worked at a contract machining shop that makes hydraulic manifolds and valve bodies, first as a CNC operator and for the last eighteen months as the shift's in-process inspector.

My day starts with first-piece approvals. I measure bores, thread depths and hole positions on new setups using bore gauges, thread plugs and the shop's CMM, then sign the setup sheet before the operator runs the order. I also run patrol checks every hour and keep the control charts for our two highest-volume part families. Last winter I noticed a slow upward drift on a bore diameter that was still inside tolerance. I flagged it to our process engineer, and we traced it to a boring bar that was wearing faster than its scheduled change. We adjusted the tool life in the program before any parts went out of tolerance.

I take the paperwork seriously because I have seen what a vague nonconformance report costs. When I write one, I include the drawing revision, the characteristic, the actual reading, the gauge I used and the quantity on hold, so the review board can make a decision the same day.

I completed a GD&T and blueprint reading course at my local community college this spring, and I am logging my inspection experience toward the ASQ Certified Quality Inspector exam. I would like to grow into CMM programming and supplier inspection, and your plant's mix of machined and assembled products is the right place to do it.

Thank you for your time. I would welcome the chance to walk through my inspection records with your quality team.

Sincerely, Jordan Reyes