Quality Control Assistant Jobs in O Fallon, IL (NOW HIRING)

The QC Technician supports quality control testing activities for raw materials, in-process samples, and finished products within a fast-paced manufacturing environment. This position performs laboratory testing, sample preparation, data documentation, and quality evaluations to ensure products meet established specifications and quality standards. The role provides excellent opportunities for recent graduates and early-career scientists to develop analytical chemistry, instrumentation, and quality systems expertise through hands-on laboratory experience and structured training.

• Perform quality control testing on incoming raw materials, in-process samples, and finished products according to established procedures.
• Conduct routine physical property and wet chemistry testing, including pH, viscosity, TOC, and related analytical evaluations.
• Prepare samples, standards, reagents, and volumetric solutions for laboratory analysis.
• Collect, analyze, document, and communicate test results accurately and in accordance with laboratory procedures.
• Review laboratory and production records for completeness, accuracy, and compliance with Good Documentation Practices (GDP) and GMP requirements.
• Enter, retrieve, and maintain testing data within laboratory information management systems (LIMS).
• Assist with investigations related to out-of-specification (OOS), out-of-trend (OOT), and customer complaint findings.
• Support laboratory housekeeping activities, including equipment cleaning, glassware maintenance, and waste disposal.
• Collaborate with Production, Quality Assurance, Engineering, and other departments to support product quality and manufacturing operations.
• Follow all laboratory safety procedures and quality requirements.

With training, this role will expand into:

• HPLC, GC, LC, and additional instrumental analytical testing.
• Method development and method transfer activities.
• Instrument calibration, qualification, and validation support (IQ/OQ/PQ).
• Stability testing programs.
• SOP development, review, and revision.
• Laboratory troubleshooting and continuous improvement initiatives.

• Bachelor's degree in Chemistry, Biochemistry, Biology, Microbiology, Chemical Engineering, Pharmaceutical Sciences, or another related scientific discipline.
• Laboratory experience through academic coursework, undergraduate research, internships, co-ops, or industry experience.
• Understanding of basic analytical chemistry principles and laboratory practices.
• Experience with sample preparation, solution preparation, and laboratory documentation.
• Strong attention to detail and organizational skills.
• Ability to accurately record observations, test results, and laboratory activities.
• Effective verbal and written communication skills.
• Ability to work independently and as part of a team in a fast-paced environment.
• Proficiency with Microsoft Office applications, including Excel, Word, Outlook, and Teams.

• Experience in a quality control, manufacturing, pharmaceutical, consumer products, personal care, chemical, food, or related laboratory environment.
• Exposure to wet chemistry techniques including pH, viscosity, titrations, TOC, or similar testing.
• Experience with HPLC, GC, LC, UV-Vis, or other analytical instrumentation through coursework, research, or industry experience.
• Familiarity with GMP, GDP, GLP, or other regulated laboratory environments.
• Experience using LIMS or electronic laboratory data management systems.
• Exposure to investigations, laboratory troubleshooting, or root cause analysis.

• Laboratory Operations
• Analytical Testing
• Data Collection & Analysis
• Quality Control
• Attention to Detail
• Documentation Accuracy
• Problem Solving
• Adaptability
• Collaboration & Teamwork
• Technical Learning Agility
• Organization & Time Management

This position is based in a laboratory environment supporting a high-volume manufacturing operation. The role involves testing raw materials, in-process samples, and finished products while working closely with Production, Engineering, and Quality teams. Employees should be comfortable managing multiple priorities, working under deadlines, and adapting to changing business needs.

Schedule: Either 4 10's or 5 8's: 7:00AM Start time (flexible within 1 hour), Could be Thursday - Sunday or Friday - Monday, or Saturday - Tuesday. Schedule must cover both days of the weekend.

This is a Contract to Hire position based out of Saint Louis, MO.

The pay range for this position is $24.00 - $24.00/hr.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: • Medical, dental & vision • Critical Illness, Accident, and Hospital • 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available • Life Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term disability • Health Spending Account (HSA) • Transportation benefits • Employee Assistance Program • Time Off/Leave (PTO, Vacation or Sick Leave)

This is a fully onsite position in Saint Louis,MO.

This position is anticipated to close on Aug 25, 2026.

About Actalent

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 20,000 consultants and 5,000 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500. We are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing® winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email actalentaccommodation@actalentservices.com for other accommodation options.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.