Merck Posted August 12, 2026

Assoc. Scientist, Preclinical Dev.

Rahway, New Jersey, United States of America FULL_TIME
Drug Discovery & Preclinical Research

Merck 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

Job Description

Our Research Scientists are our Inventors. We translate molecules to medicines, working from the discovery interface through registration stability manufacturing by designing, developing and scaling-up the formulation, device, and manufacturing process. Using innovative thinking, state-of-the-art facilities, and robust scientific methodology, we collaborate to discover the next medical breakthrough. Our company's Sterile Product Development (SPD) department is a multidisciplinary research group responsible for developing non-oral dosage forms (injections, implants, inhaled, ocular) for small, intermediate, and large molecules from preclinical toxicology studies to commercialization. Driving drug product design from the bench to manufacturing facilities, our teams ensure robust product design and development through deep fundamental understanding and characterization including screening and designing drug product compositions, developing scalable processes, and defining primary packaging / device. During development, we leverage smart experimental design, cutting edge analytical tools, and predictive approaches to inform molecule, formulation, and process selection. We are seeking a motivated engineer / associate scientist to work collaboratively in a team environment to help solve key challenges in formulation development and manufacturing of parenteral pharmaceutical products. The successful candidate will be a passionate scientist with strong academic fundamentals and a drive to develop new medicines to improve human health. In this role, the individual will be responsible for supporting the formulation development of new biological / chemical entities as part of a matrix team from initial first-in-human formulations to commercialization. The successful candidate must be able to collaborate in a fast-paced, integrated, multidisciplinary team environment.

Additional Responsibilities:

Develops and applies basic principles and scientific concepts to execute work in a laboratory or pilot plant environment to develop sterile drug products.

Capable of learning practical laboratory / pilot plant skills and fundamental scientific principles to utilize as part of their daily responsibilities.

Executes routine experiments and data interpretation with appropriate technical guidance. Operates and troubleshoots equipment and processes.

Builds capability to support manufacturing operations in GXP environments.

Can understand overall project timelines to manage prioritization of individual contributor deliverables with appropriate supervision.

Works well with others in collaborative team environments.

Takes initiative, motivated to excel, has a strong technical background, has excellent communication and interpersonal skills.

Builds awareness of relevant new and current technologies to grow as a pharmaceutical scientist.

Education Minimum Requirements:

B.S. degree in Chemical/Biochemical/Biomedical Engineering, Materials Science, Pharmaceutics, Pharmaceutical Chemistry, Pharmaceutical Sciences, Chemistry, Biochemistry, or related fields.

Required Experience and Skills:

Strong verbal and written communication skills.

Strong collaboration skills and experience working in a team environment.

Ability to learn and apply new scientific principles to execution of daily responsibilities.

Demonstrated ability to collate and conduct basic data analysis.

Prior experience with Microsoft Office.

Preferred Experience and Skills:

Prior experience in a laboratory environment.

Passion to learn and develop as a pharmaceutical scientist.

Required Skills:

Collaboration, Pharmaceutics, Researching, Scientific Research, Taking Initiative, Technical Writing

Preferred Skills:

Chemistry, Pharmaceutical Industry

Current Employees apply HERE

Current Contingent Workers apply HERE

US and Puerto Rico Residents Only:

Our company is committed to inclusion, ensuring that candidates can engage in a hiring process that exhibits their true capabilities. Please click here if you need an accommodation during the application or hiring process.

As an Equal Employment Opportunity Employer, we provide equal opportunities to all employees and applicants for employment and prohibit discrimination on the basis of race, color, age, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability status, or other applicable legally protected characteristics.  As a federal contractor, we comply with all affirmative action requirements for protected veterans and individuals with disabilities.  For more information about personal rights under the U.S. Equal Opportunity Employment laws, visit:

EEOC Know Your Rights

EEOC GINA Supplement​

We are proud to be a company that embraces the value of bringing together, talented, and committed people with diverse experiences, perspectives, skills and backgrounds. The fastest way to breakthrough innovation is when people with diverse ideas, broad experiences, backgrounds, and skills come together in an inclusive environment. We encourage our colleagues to respectfully challenge one another’s thinking and approach problems collectively.

Learn more about your rights, including under California, Colorado and other US State Acts

The salary range for this role is

$71,900.00 - $113,200.00

This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An employee’s position within the salary range will be based on several factors including, but not limited to relevant education, qualifications, certifications, experience, skills, geographic location, government requirements, and business or organizational needs.

The successful candidate will be eligible for annual bonus and long-term incentive, if applicable.

We offer a comprehensive package of benefits.  Available benefits include medical, dental, vision healthcare and other insurance benefits (for employee and family), retirement benefits, including 401(k), paid holidays, vacation, and compassionate and sick days. More information about benefits is available at https://jobs.merck.com/us/en/compensation-and-benefits .

You can apply for this role through https://jobs.merck.com/us/en (or via the Workday Jobs Hub if you are a current employee). The application deadline for this position is stated on this posting.

San Francisco Residents Only:  We will consider qualified applicants with arrest and conviction records for employment in compliance with the San Francisco Fair Chance Ordinance

Los Angeles Residents Only:  We will consider for employment all qualified applicants, including those with criminal histories, in a manner consistent with the requirements of applicable state and local laws, including the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance

Search Firm Representatives Please Read Carefully 

Merck & Co., Inc., Rahway, NJ, USA, also known as Merck Sharp & Dohme LLC, Rahway, NJ, USA, does not accept unsolicited assistance from search firms for employment opportunities. All CVs / resumes submitted by search firms to any employee at our company without a valid written search agreement in place for this position will be deemed the sole property of our company.  No fee will be paid in the event a candidate is hired by our company as a result of an agency referral where no pre-existing agreement is in place. Where agency agreements are in place, introductions are position specific. Please, no phone calls or emails.

Employee Status:

Regular

Relocation:

Domestic

VISA Sponsorship:

No

Travel Requirements:

10%

Flexible Work Arrangements:

Not Applicable

Shift:

Not Indicated

Valid Driving License:

No

Hazardous Material(s):

N/A

Job Posting End Date:

08/18/2026 *A job posting is effective until 11:59:59PM on the day BEFORE  the listed job posting end date. Please ensure you apply to a job posting no later than the day BEFORE the job posting end date.

Requisition ID:R411178

Job details

Seniority
Not listed
Function
Drug Discovery & Preclinical Research
Therapeutic area
Not listed
Location
Rahway, New Jersey, United States of America
Employment type
FULL_TIME

How this role compares

Computed from every other active Drug Discovery & Preclinical Research role in our database, not just this employer's listings.

We currently track 383 comparable Drug Discovery & Preclinical Research roles across 47 biopharma companies.

383Comparable roles tracked
345Currently active
47Companies hiring similar roles
16Countries represented

Salary context

136 of 383 peers report a salary range (USD, annualized)

Peers share this role's job function. This posting doesn't list a seniority level, so peers aren't narrowed by seniority either -- the range below may span more levels than usual.

This roleSubject $71,900/yr – $113,200/yr
Lowest disclosed · Scientist 1, Oncology | Drug Discovery · AbbVie $0/hr – $0/hr (≈ $0–$0/yr)
Highest disclosed · Head, Oncology Drug Discovery – San Diego · Novartis $248,500/yr – $461,500/yr
Peer group range $0 – $355,000 (median $165,300)

Where these roles are based

Top locations among the 383 comparable roles

United States303
India17
Germany13
United Kingdom9
Canada9
Switzerland6

+ 10 more countries

Seniority mix

297 of 383 peers have a known seniority level

Senior111
Principal57
Intern/Fellow/Postdoc34
Director26
Associate23
Associate Director21
Senior Director12
Executive/VP8
Manager5

Therapeutic area mix

54 of 383 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Oncology31
Cardiovascular / CVRM10
Immunology6
Neuroscience4
Vaccines & Infectious Disease2
Respiratory1

Similar opportunities

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.

40%similar
AstraZeneca Gaithersburg, Maryland, United States of America Principal
Same function Same country
40%similar
Lilly San Francisco, California, United States of America Executive/VP
Same function Same country
40%similar
Lilly Indianapolis, Indiana, United States of America Executive/VP
Same function Same country
40%similar
Lilly Indianapolis, Indiana, United States of America Intern/Fellow/Postdoc
Same function Same country
40%similar
Lilly San Diego, California, United States of America Intern/Fellow/Postdoc
Same function Same country
40%similar
Lilly Indianapolis, Indiana, United States of America Intern/Fellow/Postdoc
Same function Same country

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.

40%
Principal Scientist Drug Product Development
AstraZeneca · Gaithersburg, Maryland, United States of America · Principal
Function Therapeutic area Seniority Country
40%
Postdoctoral Researcher in Translational Oncology
Lilly · Indianapolis, Indiana, United States of America · Intern/Fellow/Postdoc
Function Therapeutic area Seniority Country
40%
Advisor / Senior Advisor, CNS/PNS NAMs – Investigative Toxicology
Lilly · Indianapolis, Indiana, United States of America · Principal
Function Therapeutic area Seniority Country
40%
Director / Sr / Exec Dir - Applied Intelligence for Discovery (AI4D)
Lilly · San Francisco, California, United States of America · Director
Function Therapeutic area Seniority Country
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.