Top 249 Laboratory scientist Jobs in Chesterfield, Mo

LCMS Chemist
Actalent —Hazelwood, MO
- $40 - $55 an hour
- Overtime
- Ability to walk for extended periods
- Bachelor of Science
- Mid-level
- Commuter assistance
- Health savings account
Quick Apply
10d
Chemist
Hunter International, Inc —Chesterfield, MO
- $28 - $30 an hour
- Contract
- Mid-level
- Analysis skills
- Bachelor's degree
Quick Apply
1d
Scientist 1
Pace Analytical Services —Hazelwood, MO
- $18 an hour
- Full-time
- Data analysis skills
- Bachelor's degree
- Cleaning
- Wellness program
- Health savings account
12d
Chemist
Industrial Inspection & Analysis —St. Louis, MO
- Full-time
- Microsoft Word
- Customer service
- Mid-level
- Paid holidays
- Disability insurance
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13d
Quality Control Chemist
Yoh, A Day & Zimmermann Company —St. Louis, MO
- $22 - $24 an hour
- Bachelor of Science
- Analysis skills
- Fair chance
- Health savings account
- Disability insurance
Quick Apply
Medical Laboratory Scientist -MLS - II (Dayshift)
BJC HealthCare —St. Louis, MO
- $28.30 - $47.03 an hour
- 12 hour shift
- Acute care
- Mid-level
- Bachelor's degree
- Disability insurance
- Health insurance
Clinical Laboratory Scientist
SSM Health —Bridgeton, MO
- Part-time
- Hospital
- No experience needed
- Children
- Paid parental leave
- Health insurance
Quality Control Chemist
Yoh, A Day & Zimmermann Company —St. Louis, MO
- $23 - $24 an hour
- Full-time
- Mid-level
- Bachelor's degree
- Fair chance
- Health savings account
- Disability insurance
Quick Apply
5d
Toxicology Technologist
SSM Health —Berkeley, MO
- Full-time
- Pass drug screening
- No experience needed
- Bachelor's degree
- Paid parental leave
- Health insurance
8d
Laboratory Specialist
Pfizer —St. Louis, MO
- $68,600 - $114,300 a year
- Online Application
- Bachelor of Science
- Engineering
- Mid-level
- Paid holidays
- Relocation assistance
2d
Medical Laboratory Scientist MLS II
BJC HealthCare —St. Louis, MO
- $28.30 - $47.03 an hour
- Full-time
- Hospital
- Mid-level
- Supervising experience
- Disability insurance
- Health insurance
Medical Laboratory Scientist - MLS II
BJC HealthCare —Saint Peters, MO
- $28.30 - $47.03 an hour
- 12 hour shift
- Hospital
- Mid-level
- Ob/Gyn
- Disability insurance
- Health insurance
R&D Scientist II
Medix Biochemica —Maryland Heights, MO
- Weekends as needed
- Mid-level
- 3 years
- Master's degree
Clinical Laboratory Scientist Lead
SSM Health —Lake Saint Louis, MO
- Full-time
- Hospital
- Mid-level
- Children
- Paid parental leave
- Health insurance
Clinical Variant Scientist - Pathology & Immunology
Washington University in St. Louis —St. Louis, MO
- $77,700 - $120,400 a year
- Online Application
- Writing skills
- Pass drug screening
- Mid-level
- Commuter assistance
- Employee assistance program
7d
Entry Level Chemist
HarveStaff —Chesterfield, MO
- $24.14 - $32.14 an hour
- Bachelor's degree
- Criminal background check
- Organizational skills
Quick Apply
1d
Associate Scientist
Alcami Corporation —St. Louis, MO
- Full-time
- Microsoft Excel
- Ability to lift 50 pounds
- Bachelor's degree
14d
Chem Tech
NewMarket Services Corporation —Sauget, IL
- $60,000 - $85,000 a year
- Full-time
- Computer literacy
- Mid-level
- Travel
- Disability insurance
- Health insurance
Medical Laboratory Scientist - MLS II (Part-Time, Nights)
BJC HealthCare —St. Louis, MO
- $28.30 - $47.03 an hour
- Part-time
- Surgery
- Hospital
- Mid-level
- Disability insurance
- Health insurance
Quality Tech II - Micro
Par Health —St. Louis, MO
- 8 hour shift
- Computer literacy
- Mid-level
- Bachelor's degree

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LCMS Chemist

Actalent -
Hazelwood, MO

Quick Apply

Job Details

Contract
$40 - $55 an hour
10 days ago

Benefits

Commuter assistance
Health savings account
AD&D insurance
Disability insurance
Health insurance
Dental insurance
401(k)
Paid time off
Employee assistance program
Vision insurance
Life insurance

Qualifications

Bachelor's degree
Compliance documentation
Mass spectrometers (MS)

Full Job Description

Job Title: ChemistJob Description

We are seeking a detail-oriented and highly organized Lab Scientist to support analytical chemistry laboratory tests and facility activities. This onsite role is responsible for assisting with analytical testing, laboratory maintenance, equipment coordination, controlled documentation, and sample management while ensuring compliance with established quality standards and laboratory procedures. The ideal candidate will possess strong analytical chemistry knowledge, experience with laboratory instrumentation, and a commitment to data integrity, safety, and continuous improvement.

Responsibilities

Operate and maintain analytical chemistry instrumentation, including HPLC, LC-MS, GC, spectrometry, and titration systems.
Perform analytical testing activities, such as routine laboratory analyses, analytical method development, and validation.
Troubleshoot instrument and laboratory issues and coordinate maintenance activities as needed.
Draft, review, revise, and maintain controlled documents, including Standard Operating Procedures (SOPs), analytical methods, forms, work instructions, and laboratory records.
Ensure documentation is completed accurately, legibly, and in compliance with applicable quality standards.
Coordinate laboratory logistics and operational activities to support testing schedules and project timelines.
Follow laboratory safety procedures and promote a safe working environment.

Essential Skills

Bachelor’s degree (BS or BA) in Chemistry or a related scientific discipline.
3–5 years of laboratory, technical, or operations support experience in an analytical environment.
Working knowledge and experience of analytical techniques and instrumentation, including HPLC, LC-MS, GC, spectroscopy, and titration.
Strong understanding of laboratory documentation practices and controlled-document management.

Additional Skills & Qualifications

Graduate degrees in science.
Experience in the pharmaceutical, biotechnology, or regulated laboratory environment.
Hands-on experience with LC-MS instrumentation.
Knowledge of Good Manufacturing Practices (GMP) and data integrity principles.
Experience authoring and maintaining laboratory SOPs and quality records.

Work Environment

This is a primarily onsite laboratory-based position with a standard schedule of Monday–Friday, approximately 8:00 AM – 5:00 PM. Occasional flexibility may be required to support laboratory activities. Overtime is not expected on a routine basis but may be needed periodically based on workload. The role requires handling chemicals, laboratory reagents, and analytical instrumentation, as well as the ability to stand, walk, and perform routine laboratory tasks for extended periods. This position offers the opportunity to contribute to a dynamic analytical laboratory environment while supporting high-quality scientific operations, regulatory compliance, and continuous improvement initiatives.

Job Type & Location

This is a Contract position based out of Hazelwood, MO.

Pay and Benefits

The pay range for this position is $40.00 - $55.00/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)

Workplace Type

This is a fully onsite position in Hazelwood,MO.

Application Deadline

This position is anticipated to close on Aug 12, 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 [email protected] 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.

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Refine Your Search

laboratory scientist jobs in chesterfield, mo

LCMS Chemist

Chemist

Scientist 1

Chemist

Quality Control Chemist

Medical Laboratory Scientist -MLS - II (Dayshift)

Clinical Laboratory Scientist

Quality Control Chemist

Toxicology Technologist

Laboratory Specialist

Medical Laboratory Scientist MLS II

Medical Laboratory Scientist - MLS II

R&D Scientist II

Clinical Laboratory Scientist Lead

Clinical Variant Scientist - Pathology & Immunology

Entry Level Chemist

Associate Scientist

Chem Tech

Medical Laboratory Scientist - MLS II (Part-Time, Nights)

Quality Tech II - Micro

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