Merck KGaA Posted August 15, 2026

Senior Associate Scientists - Process Development

St. Louis, Missouri, United States FULL_TIME
Manufacturing & CMC Senior

Merck KGaA is the source of truth for this posting and owns the application process. We surface normalized context and market comparison you won't find on the original listing.

About this opportunity

Work Location:  St. Louis, Missouri

Shift:

Department:  LS-SC-UYKPA Cherokee STL PAD Team 7

Recruiter:  Ashley Hennessy

This information is for internals only. Please do not share outside of the organization.

NOTICE OF FILING

This notice is posted as the result of the filing of an Application for Alien Labor Certification with the Department of Labor for the job opportunity listed below.  Any person may provide documentary evidence bearing on this Labor Certification Application to Certifying Officer, U.S. Department of Labor, Employment and Training Administration, Office of Foreign Labor Certification, 200 Constitution Avenue NW, Room N-5311, Washington, DC 20210.

Employer:       Sigma-Aldrich Manufacturing LLC

400 Summit Drive

Burlington, Massachusetts 01803

Job Site:          3300 South Second Street

St. Louis, MO 63118

Job Title:         Senior Associate Scientists – Process Development

Responsibilities:

 

Communicate experimental results according to company policy;

Deliver data in a timely manner;

Contribute to process improvement initiatives within team;

Execute and troubleshoot experiments with guidance from subject matter experts;

Document and communicate experimental results and contribute to manufacturing process development;

Deliver data in a timely manner and ensure documents are compliant with transfer to GMP; and

Independently manage daily activities and process improvements.

Requirements & Qualifications:

Employer requires candidate to have a Bachelor’s degree in Chemistry, Pharmaceutical Science, or a closely related field and two (2) years of work experience as a Chemist or closely

related occupation. Candidate must also have the following: 1) Demonstrated knowledge of separation science including the operation and data interpretation of UPLC, RP-HPLC, SEC, HIC and/or IEX gained through two (2) years of work experience; 2) Demonstrated ability with protein analytics and spectroscopy, including UV and slope gained through two (2) years of work experience; 3) Demonstrated knowledge of modern data acquisition systems and electronic notebooks gained through two (2) years of work experience; and 4) Demonstrated knowledge of method development for GMP Analytics gained through two (2) years of work experience. All years of experience may be gained concurrently. Salary: Seventy-Nine Thousand Four Hundred Fifty-Six to Ninety-Nine Thousand Four Hundred Fifty-Six dollars per year.

Applicants can send resume to Sigma-Aldrich Manufacturing LLC., 400 Summit Drive, Burlington, MA 01803 ( Attn: Req.# 301609) or apply online at  https://careers.emdgroup.com

 

Compensation is based on experience, location, and other factors.  We offer generous benefits packages:  https://careers.emdgroup.com/us/en/benefits .

DATE POSTED: ______________________           DATE REMOVED: ___________________

LOCATION POSTED: _________________________________________________________

EMPLOYER SIGNATURE: ______________________________________________________

The Company is an Equal Employment Opportunity employer. No employee or applicant for employment will be discriminated against on the basis of race, color, religion, age, sex, sexual orientation, national origin, ancestry, disability, military or veteran status, genetic information, gender identity, transgender status, marital status, or any other classification protected by applicable federal, state, or local law.  This policy of Equal Employment Opportunity applies to all policies and programs relating to recruitment and hiring, promotion, compensation, benefits, discipline, termination, and all other terms and conditions of employment. Any applicant or employee who believes they have been discriminated against by the Company or anyone acting on behalf of the Company must report any concerns to their Human Resources Business Partner, Legal, or Compliance immediately. The Company will not retaliate against any individual because they made a good faith report of discrimination.

Job details

Seniority
Senior
Function
Manufacturing & CMC
Therapeutic area
Not listed
Location
St. Louis, Missouri, United States
Employment type
FULL_TIME

How this role compares

Computed from every other active Manufacturing & CMC role in our database, not just this employer's listings.

We currently track 400 comparable Senior Manufacturing & CMC roles across 59 biopharma companies.

400Comparable roles tracked
375Currently active
59Companies hiring similar roles
21Countries represented

Salary context

188 of 400 peers report a salary range (USD, annualized)

Peers share this role's job function and a matching or adjacent seniority level -- not necessarily the same therapeutic area or country.

This roleSubject Not listed on this posting
Lowest disclosed · Senior Scientist II – CMC Developmental Sciences · AbbVie $0/hr – $0/hr (≈ $0–$0/yr)
Peer group range $0 – $222,900 (median $150,600)

Where these roles are based

Top locations among the 400 comparable roles

United States284
India38
Ireland11
Singapore10
Switzerland7
Slovenia7

+ 15 more countries

Seniority mix

400 of 400 peers have a known seniority level

Senior257
Principal82
Associate Director61

Therapeutic area mix

0 of 400 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

No peers with a known therapeutic area yet.

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The closest matches from our peer group, ranked by how similar they are, not how well you'd qualify for them -- treat this as market context, not a guaranteed shortlist; a weak match is labeled as one below.

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How we calculate "similar"

No black box, no LLM guesswork: a deterministic score built from four normalized attributes. Here's this role's own peer group at different match levels, so you can see the mechanism, not just the result.

Every comparison starts from the same 100-point budget: 25 for working in the same function, 40 for the same therapeutic area, 20 for the same or adjacent seniority, 15 for the same country. A dimension we can't confirm on both sides contributes nothing, never a guess, never a free pass.

60%
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Unmatched or unknown dimensions score exactly the same: 0 points, never a partial guess. A role we know almost nothing about beyond its function bottoms out at 25%; it never inflates to 100% just because there's little to compare against. Seniority uses a defined ladder (Associate → Manager → Associate Director → Senior → Principal → Director → Senior Director → Executive/VP) so "Director" and "Senior Director" count as adjacent, but "Director" and "Executive/VP" do not.