Full-Time

Quality Assurance Technician

SIGMA

SIGMA

1,001-5,000 employees

Global manufacturer of engineered metal components

Compensation Overview

$22.43/hr

City of Industry, CA, USA

In Person

Category
Manufacturing Quality & Test (1)
Required Skills
GMP
Quality Assurance (QA)

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Requirements
  • A high school diploma or equivalent is required.
  • At least 1 year of experience in a quality control laboratory environment is required.
  • Knowledge of laboratory equipment and procedures is required.
  • Ability to follow written and verbal instructions accurately is required.
  • Strong attention to detail and documentation skills are required.
  • Ability to work independently and as part of a team is required.
  • Good communication and interpersonal skills are required.
  • Ability to perform simple algebra is required.
  • Ability to apply logical thinking is required.
Responsibilities
  • Ensure that good manufacturing practices, sanitation standard operating procedures, and other standard operating procedures are correctly implemented during production and cleaning operations.
  • Oversee the quality of raw materials, in-process products, and finished products, and report quality indicators to the QA Lab Lead and/or QA Manager.
  • Follow the SQF System procedures for sampling, analysis, and results, and communicate unmet specifications or out-of-specification results to the QA Lab Lead and/or QA Manager.
  • Conduct quality assessments of incoming materials, in-process samples, and finished products against established specifications, including raw milk, raw cream, and pasteurized milk.
  • Monitor critical quality parameters for pasteurized cream, including phosphatase levels, texture, flavor, and color.
  • Collect in-process and finished-product samples at appropriate intervals for laboratory analysis and retention.
  • Perform environmental sampling under the Environmental Monitoring Program, including ATP testing, sponge-swab testing, and air-plate testing at the required frequency.
  • Collect samples for the hand-swabbing program.
  • Calibrate thermometers, pipettors, scales, Foss instruments, and other laboratory equipment as needed.
  • Monitor laboratory results and update databases to keep them current and relevant.
  • Immediately notify the Lab Lead and QA Manager of nonconformities or specifications that are not met.
  • Prepare materials needed for daily production, including potassium sorbate and natamycin solution.
  • Maintain the cleanliness of the laboratory and laboratory refrigerator.
  • Serve as a cross-trained backup for the QC Technician when needed.
  • Perform other duties assigned by the QA Lab Lead and/or QA Manager.
Desired Qualifications
  • Bilingual English and Spanish ability is preferred.

Sigma Engineered Solutions is a global metal components manufacturer that acts as a single-source, vertically integrated supplier. It handles the entire process from design and engineering to manufacturing, finishing, and global supply chain management, delivering finished parts built from over 260 metal and alloy combinations. The company uses die casting, sand casting, and investment casting, along with precision metal stamping, Swiss CNC machining, custom tooling, and finishing services, across 13 facilities in the United States, India, and Mexico, with a U.S.-based warehouse enabling five-day fulfillment. Its model combines the cost benefits of global manufacturing with responsive, U.S.-based service and support. Sigma differentiates itself through its broad capabilities, acquisitions to expand near-shore and specialized competencies, and its fully integrated approach aimed at achieving the lowest total cost of ownership for multinational clients.

Company Size

1,001-5,000

Company Stage

Acquired

Total Funding

N/A

Headquarters

Garner, North Carolina

Founded

1982

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Simplify Jobs

Simplify's Take

What believers are saying

  • Argand’s April 17, 2025 recapitalization left Sigma capitalized for expansion.
  • Brad Ward’s CEO appointment in May 2023 stabilized leadership after Vagner Finelli’s exit.
  • Revelio recorded 11 active job postings in 2026, signaling selective hiring momentum.

What critics are saying

  • June 13, 2024 Proposition 65 claims target Sigma’s rigid elbows and California sales.
  • Revelio says headcount fell from 4,288 in 2023 to 4,049 in March 2026.
  • Argand’s April 2025 dividend recapitalization adds leverage that squeezes cash during OEM downturns.

What makes SIGMA unique

  • Sigma’s 13-facility U.S., India, and Mexico footprint enables true nearshore sourcing.
  • Sigma offers die casting, stamping, machining, and finishing as one vertically integrated supplier.
  • Sigma’s 260-plus alloy combinations and custom tooling shorten OEM qualification cycles.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Employee Assistance Program

Paid Time Off

Life Insurance

Disability Insurance

Paid Holidays

Parental Leave

Paid Sick Leave

401(k) Retirement Plan

Growth & Insights

Headcount

6 month growth

2%

1 year growth

2%

2 year growth

3%