Top 7 Senior chemist Jobs in St. Louis, Mo

Sr Process Chemist
Kelly Services —St. Louis, MO
- $45 - $55 an hour
- Full-time
- Bachelor of Science
- 3 years
- Bachelor's degree
- Paid holidays
- Disability insurance
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Senior Scientist
Merck KGaA —St. Louis, MO
- $105,500 - $158,300 a year
- Bachelor of Science
- Master's degree
- Analysis skills
- Health insurance
- Paid time off
7d
Senior Analytical Scientist
EMD-Merck US —St. Louis, MO
- $75,700 - $113,500 a year
- Microsoft Excel
- Doctor of Philosophy
- Quality control
- Health insurance
- Paid time off
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8d
Senior Bioanalytical Chemist - Scientist II
Eurofins USA Discovery Services —Saint Charles, MO
- Overtime
- Bachelor of Science
- 3 years
- Math
- Paid holidays
- Disability insurance
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Senior Analytical Scientist
Merck KGaA —St. Louis, MO
- $75,700 - $113,500 a year
- Microsoft Excel
- Doctor of Philosophy
- Quality control
- Health insurance
- Paid time off
Formulation & Process Development Senior Scientist
Virbac —Bridgeton, MO
- Full-time
- 5 years
- Bachelor of Science
- Data analysis skills
- Paid holidays
- 401(k) matching
Senior Associate Scientists - Process Development
Merck KGaA —St. Louis, MO
- Online Application
- Mid-level
- Bachelor's degree
- Continuous improvement
- Opportunities for advancement
- Referral program

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Chemist
Yoh, A Day & Zimmermann Company —St. Louis, MO
Bachelor's Degree in Chemistry or a related Scientific field. Perform sample testing on incoming raw materials, in-process samples, and finished products per…
$23 - $24 an hour
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7d
Quality Control Chemist
Yoh, A Day & Zimmermann Company —St. Louis, MO
Perform laboratory analysis on incoming raw materials, in-process samples, and finished products per established procedures, including wet chemistry, GC & HPLC.
$22 - $24 an hour
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senior chemist jobs near st. louis, mo

Sr Process Chemist

Kelly Services -
St. Louis, MO

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Job Details

Full-time
$45 - $55 an hour

Benefits

Paid holidays
Disability insurance
Health insurance
Dental insurance
Vision insurance
Retirement plan
Paid sick time

Qualifications

FDA submissions
Content creation for technical audiences
Technical documentation
Pharmaceutical synthesis
Bachelor of Science
Engineering process optimization
Chemical scale-up projects
3 years
Laboratory reports
Policy & process development
Bachelor's degree
Doctor of Philosophy
Technology transfer (scale-up process)
Master of Science
Pharmaceutical analysis
Compliance documentation
Laboratory techniques
Organizational skills
Chemistry
Collaboration with manufacturing teams
Regulatory submission editing and review
Production batch record review
GMP for research safety and compliance
Senior level
Technical writing experience within technology
Project leadership
Cross-functional team management
Doctor of Organic Chemistry
Liquid chromatography machines
Bachelor's degree in chemistry

Full Job Description

Senior Process Chemist
Kelly® Science & Clinical is seeking a Senior Process Chemist for a 6-month contract position in St Louis, MO. This role is ideal for a motivated and experienced chemist who is passionate about developing, scaling, and commercializing advanced chemical processes and contributing to innovative pharmaceutical manufacturing.

Pay: $45/hour
Schedule: Mon-Fri Onsite

Overview
The Client is an industry-focused organization dedicated to advancing pharmaceutical development through innovative chemical and manufacturing technologies. This position involves leading process development and scale-up activities for Active Pharmaceutical Ingredients (APIs), working cross-functionally with internal teams and external subject matter experts to ensure safe, efficient, and compliant manufacturing processes.
The Senior Process Chemist will provide technical leadership in the development, optimization, and transfer of chemical processes from laboratory through manufacturing scale under GMP guidelines.

Responsibilities

Lead the development and scale-up of advanced API manufacturing processes using modern process chemistry techniques
Serve as technical lead for process transfer to manufacturing scale under GMP conditions
Identify and optimize efficient chemical transformations to produce target API molecules
Collaborate with analytical chemists, process engineers, project managers, and external partners to support development activities
Prepare, review, and maintain technical documentation including reports, specifications, batch records, and laboratory notebooks
Support the preparation and submission of regulatory documentation, including Drug Master Files (DMFs)
Stay current on emerging technologies, advanced manufacturing methods, and applicable federal regulations

Qualifications

Strong background in organic and process chemistry with demonstrated experience in process development and scale-up
Experience supporting GMP manufacturing, validation activities, and commercial technical transfers
Experience with NMR, TLC, and LCMS
Working knowledge of FDA Q7A Good Manufacturing Practice guidance for APIs
Familiarity with analytical instrumentation, process analytical technology (PAT), and chemical engineering concepts
Ability to work effectively both independently and in cross-functional team environments
Excellent communication, organization, and problem-solving skills

Education Requirements:

Ph.D. in Organic Chemistry with at least 3 years of relevant experience, or
M.S. in Organic Chemistry with 5+ years of experience, or
B.S. in Chemistry with 10+ years of directly related experience

What Happens Next
Once you apply, you’ll proceed to the next steps if your skills and experience are a good fit. Even if this position does not move forward, you will remain part of our network. Our expert Science & Clinical recruiting team will retain access to your profile, helping ensure continued exposure to future opportunities.

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As part of our promise to talent, Kelly supports those who work with us through a variety of benefits, perks, and work-related resources. Kelly offers eligible employees voluntary benefit plans including medical, dental, vision, telemedicine, term life, whole life, accident insurance, critical illness, a legal plan, and short-term disability. As a Kelly employee, you will have access to a retirement savings plan, service bonus and holiday pay plans (earn up to eight paid holidays per benefit year), and a transit spending account. In addition, employees are entitled to earn paid sick leave under the applicable state or local plan.

Why Kelly® Science & Clinical?

Kelly Science & Clinical is your connection to premier scientific and clinical companies looking to hire industry experts just like you. Our team creates expert talent solutions to solve the world’s most critical challenges. Every day, we match science professionals with dream jobs that fit their skills, interests, and career goals-it’s the way we think job searching should be. Nearly 100 percent of our science recruiters have a professional background and education in science, so we know a thing or two about the science market and how to get your expertise noticed.

About Kelly

Work changes everything. And at Kelly, we’re obsessed with where it can take you. To us, it’s about more than simply accepting your next job opportunity. It’s the fuel that powers every next step of your life. It’s the ripple effect that changes and improves everything for your family, your community, and the world. Which is why, here at Kelly, we are dedicated to providing you with limitless opportunities to enrich your life-just ask the 300,000 people we employ each year.

Kelly is committed to providing equal employment opportunities to all qualified employees and applicants regardless of race, color, sex, sexual orientation, gender identity, religion, national origin, disability, veteran status, age, marital status, pregnancy, genetic information, or any other legally protected status, and we take affirmative action to recruit, employ, and advance qualified individuals with disabilities and protected veterans in the workforce. Requests for accommodation related to our application process can be directed to the Kelly Human Resource Knowledge Center. Kelly complies with the requirements of California’s state and local Fair Chance laws. A conviction does not automatically bar individuals from employment. Kelly participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.

Kelly may use AI-powered tools during the recruitment and hiring process. For full details, including how Kelly uses AI, your rights, and how to request a reasonable accommodation, visit the Recruitment Artificial Intelligence Notice.

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Refine Your Search

senior chemist jobs in st. louis, mo

Sr Process Chemist

Senior Scientist

Senior Analytical Scientist

Senior Bioanalytical Chemist - Scientist II

Senior Analytical Scientist

Formulation & Process Development Senior Scientist

Senior Associate Scientists - Process Development

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