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Weekend Microbiologist Jobs in Illinois (NOW HIRING)

Xttrium Laboratories Inc

Microbiologist

Mount Prospect, IL · On-site

$75K - $85K/yr

Position Summary The Microbiologist performs microbiological testing and technical evaluations that support product quality, manufacturing operations, contamination control, and regulatory compliance.

Laboratoire Guerbet

Microbiologist

Raleigh, IL · On-site

Microbiologist At Guerbet, we build lasting relationships so that to enable people to live better . This is Our Purpose. We are a global leader in medical imaging, offering an extensive portfolio of ...

Guerbet

Microbiologist

Raleigh, IL · On-site

Microbiologist At Guerbet, we build lasting relationships so that to enable people to live better . This is Our Purpose. We are a global leader in medical imaging, offering an extensive portfolio of ...

Merieux NutriSciences

Microbiologist I

Crete, IL · On-site

Microbiologist I Crete Analytical Laboratory Permanent MERIEUX NUTRISCIENCES As a trusted partner ... YOUR PROFILE Must be able to work evenings and weekends, specifically Saturday & Sunday.

Solina

Corporate Microbiologist

Bolingbrook, IL · On-site

In addition, the Corporate Microbiologist partners closely with R&D, Technical Services, Regulatory ... work weekends to meet department and business demands. SPECIAL REQUIREMENTS Employment is ...

Solina

Corporate Microbiologist

Bolingbrook, IL

In addition, the Corporate Microbiologist partners closely with R&D, Technical Services, Regulatory ... May be required to work weekends to meet department and business demands. SPECIAL REQUIREMENTS ...

Merieux NutriSciences

Microbiologist I

Crete, IL · On-site

$20 - $22/hr

Microbiologist I Crete Analytical Laboratory Regular (US Only) MERIEUX NUTRISCIENCES As a trusted ... YOUR PROFILE Must be able to work evenings and weekends, specifically Saturday & Sunday.

Select Source International

Be Seen First

Microbiologist

Arlington Heights, IL · On-site

$25.21 - $28.94/hr

This entry level position is predominantly responsible for microbiological testing and environmental monitoring. It is a Quality Control based position for the Microbiology department. The role also ...

Archer Daniels Midland

Senior Microbiologist, Process Micro Team - Decatur, IL - Relocation Assistance Available Research & Development This is an exempt level role. Position Summary The Senior Microbiologist, Process ...

SGS U.S. Holding Inc.

Microbiologist III

Lincolnshire, IL · On-site

$30/hr

The Microbiologist III will conduct a variety of specific test methods, and as study director is responsible for conducting all studies both according to applicable standards and regulations (GMP/GLP ...

SGS

Microbiologist I

Lincolnshire, IL · On-site

$23 - $25/hr

As a professional scientist, the Microbiologist is expected to work under the guidance of supervisors and managers, develop skills and understanding of laboratory procedures, exhibit technical ...

SGS

Microbiologist III

Lincolnshire, IL · On-site

$30/hr

The Microbiologist III will conduct a variety of specific test methods, and as study director is responsible for conducting all studies both according to applicable standards and regulations (GMP/GLP ...

SGS U.S. Holding Inc.

Microbiologist I

Lincolnshire, IL · On-site

$23 - $25/hr

As a professional scientist, the Microbiologist is expected to work under the guidance of supervisors and managers, develop skills and understanding of laboratory procedures, exhibit technical ...

SGS U.S. Holding Inc.

Microbiologist II

Lincolnshire, IL · On-site

$28/hr

The Microbiologist II will conduct a variety of specific test methods, and as study director is responsible for conducting all studies both according to applicable standards and regulations (GMP/GLP ...

SGS

Microbiologist II

Lincolnshire, IL · On-site

$28/hr

The Microbiologist II will conduct a variety of specific test methods, and as study director is responsible for conducting all studies both according to applicable standards and regulations (GMP/GLP ...

ADM

Senior Microbiologist - Decatur, IL

Decatur, IL

$90K - $144K/yr

Senior Microbiologist, Process Micro Team - Decatur, IL - Relocation Assistance AvailableResearch & DevelopmentThis is an exempt level role.Position SummaryThe Senior Microbiologist, Process Micro ...

Ferrero

FSQ Microbiology Specialist

Bloomington, IL · On-site

$70K - $80K/yr

The FSQ Microbiology Specialist provides process and/or technical leadership for laboratory ... Schedule: Monday-Friday 7:00a- 5:30p Weekend Rotation and Holiday Coverage as needed Main ...

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All JobsMicrobiologist JobsWeekend Microbiologist JobsWeekend Microbiologist Jobs in Illinois

Weekend Microbiologist information

See Illinois salary details

$15

$29

$45

How much do weekend microbiologist jobs pay per hour?

As of Aug 25, 2026, the average hourly pay for weekend microbiologist in Illinois is $29.26, according to ZipRecruiter salary data. Most workers in this role earn between $23.41 and $32.88 per hour, depending on experience, location, and employer.

What is a weekend microbiologist?

Weekend Microbiologists are laboratory professionals who work primarily on weekends to conduct microbiological testing and analysis. Their responsibilities include identifying and studying microorganisms such as bacteria, viruses, fungi, and parasites in various samples. These specialists often work in clinical, environmental, or industrial labs to support ongoing research or ensure quality control when standard weekday staff are off-duty. Weekend Microbiologists help maintain continuous laboratory operations and ensure timely results for urgent cases or critical processes.

What are the typical responsibilities and challenges faced by a weekend microbiologist?

As a Weekend Microbiologist, you will generally be responsible for conducting laboratory tests, analyzing samples, and ensuring that results are accurate and delivered on time, often with reduced weekday support staff. One challenge is managing time-sensitive testing and troubleshooting equipment issues independently, as technical or supervisory resources may be limited during weekends. Collaboration with other weekend staff, such as lab technicians or quality control personnel, is essential to maintain workflow and compliance with safety protocols. This role is ideal for professionals who are comfortable with autonomy, effective communication, and multitasking in a fast-paced laboratory environment.

What are the key skills and qualifications needed to thrive as a weekend microbiologist, and why are they important?

To thrive as a Weekend Microbiologist, you need a solid background in microbiology, laboratory techniques, and typically a bachelor's degree in microbiology or a related field. Familiarity with laboratory information management systems (LIMS), aseptic techniques, and equipment such as autoclaves and microscopes is essential. Keen attention to detail, strong problem-solving skills, and the ability to work independently are important soft skills for this role. These abilities ensure accurate test results, maintain laboratory safety standards, and support efficient weekend operations when resources may be limited.

What is the difference between Weekend Microbiologist vs Weekend Laboratory Technician?

AspectWeekend MicrobiologistWeekend Laboratory Technician
CredentialsBachelor's in Microbiology or related field, possibly certificationAssociate's or Bachelor's in Laboratory Science or related field
Work EnvironmentMicrobiology labs, healthcare, or research facilitiesGeneral clinical or research laboratories
Job FocusMicrobial analysis, pathogen identification, quality controlSample processing, equipment maintenance, data recording

Weekend Microbiologists and Weekend Laboratory Technicians often work in similar lab environments and require related credentials. However, microbiologists focus on microbial testing and analysis, while technicians handle routine sample processing and lab support tasks. Both roles are essential in healthcare and research settings, with overlapping skills but distinct responsibilities.

What are the most commonly searched types of Microbiologist jobs in Illinois?

The most popular types of Microbiologist jobs in Illinois are:

What are popular job titles related to Weekend Microbiologist jobs in Illinois?

For Weekend Microbiologist jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching Weekend Microbiologist jobs in Illinois look for?

The top searched job categories for Weekend Microbiologist jobs in Illinois are:

What cities in Illinois are hiring for Weekend Microbiologist jobs?

Cities in Illinois with the most Weekend Microbiologist job openings:

Weekend Microbiologist jobs near you
Infographic showing various Weekend Microbiologist job openings in Illinois as of August 2026, with employment types broken down into 76% Full Time, 17% Part Time, 5% Contract, and 2% Nights. Highlights an 100% In-person job distribution, with an average salary of $60,859 per year, or $29.3 per hour.

Microbiologist

Xttrium Laboratories Inc

Mount Prospect, IL • On-site

$75K - $85K/yr

Full-time

Posted 18 days ago

Job description

Company Description

Our Solutions Protect Patients!

Founded in 1932, Xttrium Laboratories has been dedicated to promoting health and well-being through high-quality products. Recognized as a trusted supplier of disinfectants to hospitals and healthcare providers, Xttrium has expanded its offerings to pharmacies nationwide. With over 40 years of expertise in manufacturing FDA-registered healthcare solutions, the company is a leader in ensuring safety and quality in a health-conscious world.

Position Summary

The Microbiologist performs microbiological testing and technical evaluations that support product quality, manufacturing operations, contamination control, and regulatory compliance. This role performs environmental monitoring, water testing, post-cleaning verification sampling, microbial assessments, laboratory investigations, antimicrobial effectiveness testing (AET), and method suitability testing. The Microbiologist evaluates microbiological data, investigates atypical results, supports contamination control programs, and serves as a technical resource within the Quality Control Microbiology function.

The position requires sound scientific judgment, strong laboratory skills, and the ability to independently assess microbiological risks and recommend appropriate corrective actions.

Key Responsibilities

  • Perform microbiological testing and sampling activities, including responsibility for environmental monitoring sampling, water sampling and testing, cleaning verification sampling, microbial enumeration, organism identification, antimicrobial effectiveness testing, and method suitability testing.
  • Evaluate microbiological data, trends, and atypical results to assess contamination risk and product quality impact.
  • Perform microbiological assessments of recovered organisms.
  • Lead or support microbiology investigations, root cause analysis, CAPA recommendations, and related technical documentation.
  • Support contamination control, cleaning validation, environmental monitoring, water system, and laboratory improvement programs.
  • Maintain accurate GMP documentation, prepare technical reports, and review laboratory records for completeness and compliance.
  • Collaborate with Manufacturing, Quality Assurance, Validation, and Engineering to resolve microbiology-related issues.
  • Support audits, inspections, deviations, change controls, risk assessments, and other Quality System activities.
  • Provide technical guidance, training, and procedure support for Microbiology Technician and junior laboratory personnel.

Qualifications

Education

  • A minimum of a Bachelor’s degree in Microbiology, Chemical Engineering or related Life Science is required.

Experience

  • 5+ years of microbiology experience in a pharmaceutical, biotechnology, medical device, or other regulated environment preferred.
  • Experience with environmental monitoring, water testing, and microbiological investigations required.
  • Experience with microbial identification and root cause investigations preferred.

Knowledge, Skills, and Abilities

  • Strong understanding of microbiology principles and laboratory techniques.
  • Knowledge of cGMP regulations, FDA guidance, ISO standards, and Good Documentation Practices.
  • Experience conducting scientific investigations and root cause analysis.
  • Ability to interpret microbiological data and assess contamination risks.
  • Strong technical writing and documentation skills.
  • Effective communication and cross-functional collaboration abilities.
  • Strong organizational, analytical, and problem-solving skills.

Physical Requirements

  • Ability to work in laboratory, manufacturing, and controlled environments.
  • Ability to wear required PPE and cleanroom gowning.
  • Ability to stand, walk, and perform sampling activities for extended periods.
  • Ability to lift and carry up to 25 pounds.

We are proud to be an Equal Opportunity Employer. We welcome people of all backgrounds, experiences, and perspectives. Employment decisions are made based on skills, qualifications, and potential; never on race, color, religion, sex, national origin, age, disability, veteran status, or any other protected trait.

The expected base compensation range for this position is between $75,000 and $85,000 USD. Actual compensation will depend on various factors.