Merck Posted September 16, 2026

Associate Principal Scientist, Immunology Discovery

San Diego, California, United States of America FULL_TIME
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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

The Associate Principal Scientist will lead translational discovery activities through strong expertise in immune cell biology, human disease models, assay development, and data interpretation. The candidate will use primary immune cell systems, ex vivo patient samples, co-culture models, tissue analyses, and multi-omics datasets to build decision-enabling translational packages.

Key Responsibilities:

Design, execute, analyze, and interpret translational experiments to validate therapeutic targets in immunology, inflammation, and autoimmunity.

Develop disease-relevant in vitro, ex vivo, co-culture, and patient-derived tissue models.

Integrate mechanistic, pharmacology, transcriptomic, spatial, and biomarker data to connect target biology with disease pathophysiology and mechanism of action.

Generate decision-enabling data packages to support target prioritization, candidate progression, biomarker hypotheses, and patient selection.

Apply deep immunology expertise to design fit-for-purpose experiments and address key scientific questions.

Introduce innovative translational models, technologies, and analytical platforms.

Represent the function on project teams and communicate plans, progress, risks, and recommendations clearly.

Collaborate with discovery biology, translational medicine, biomarker sciences, data science, pharmacology, clinical development, academia, and CRO partners.

Mentor junior scientists through scientific guidance, experimental oversight, and data interpretation support.

Promote scientific rigor, high-quality documentation, inclusion, and a one-team mindset.

QUALIFICATIONS:

Education:

Bachelor's (with 13+ years), Master's (with 9+ years) or Ph.D. (with 5+ years) in immunology, cell biology, molecular biology, translational science, biomedical sciences or related discipline and relevant experience.

Required Experience and Skills:

Strong foundation in immunology, inflammation, autoimmunity, or related immune-mediated disease biology.

Demonstrated ability to independently design, troubleshoot, and interpret complex biological experiments.

Hands-on experience with primary cell culture, immune-cell assays, co-culture systems, tissue models, or ex vivo human sample platforms.

Ability to analyze biological, biochemical, immunological, and translational assay data and design follow-up studies.

Clear communication of complex science to multidisciplinary audiences.

Effective collaboration across functions and ability to contribute to multiple projects in a matrixed environment.

Preferred Experience and Skills:

Experience developing translational models of inflammatory or autoimmune disease, immune-cell activation, tissue inflammation, or immune-mediated pathology.

Expertise with flow cytometry, cytokine profiling, imaging, multiplex tissue analysis, spatial biology, transcriptomics, or related platforms.

Experience integrating human datasets with experimental models to define mechanism of action, pharmacodynamic biomarkers, responder hypotheses, or combination strategies.

Experience supporting drug discovery from target validation through candidate nomination or early clinical translation.

Familiarity with immune-mediated diseases such as IBD, rheumatoid arthritis, hidradenitis suppurativa, psoriatic disease, lupus, asthma, or atopic dermatitis.

Experience leading external collaborations or coordinating CRO work.

#EligibleforERP

Required Skills:

Autoimmune Diseases, Cell Biology, Cell Cultures, Immunology, Immunology Research, Immunotherapy, Inflammatory Diseases, Molecular Cell Biology, Translational Research

Preferred Skills:

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

$142,400.00 - $224,100.00

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/International

VISA Sponsorship:

Yes

Travel Requirements:

10%

Flexible Work Arrangements:

Not Applicable

Shift:

1st - Day

Valid Driving License:

No

Hazardous Material(s):

n/a

Job Posting End Date:

10/11/2026 *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:R417161

Job details

Seniority
Principal
Function
Drug Discovery & Preclinical Research
Therapeutic area
Immunology
Location
San Diego, California, 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 222 comparable Principal Drug Discovery & Preclinical Research roles across 42 biopharma companies.

222Comparable roles tracked
213Currently active
42Companies hiring similar roles
13Countries represented

Salary context

91 of 222 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 $142,400/yr – $224,100/yr
Peer group range $91,450 – $322,000 (median $194,220)

Where these roles are based

Top locations among the 222 comparable roles

United States175
India11
China5
United Kingdom5
Spain4
China's Mainland4

+ 7 more countries

Seniority mix

222 of 222 peers have a known seniority level

Senior104
Principal79
Director39

Therapeutic area mix

24 of 222 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Oncology8
Cardiovascular / CVRM4
Respiratory3
Neuroscience3
Immunology3
Vaccines & Infectious Disease2
Gastroenterology1

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.

100%similar
Vertex Pharmaceuticals Inc (US) Seattle, United States Principal
Same function Same therapeutic area Same seniority Same country
100%similar
Merck San Diego, California, United States of America Principal
Same function Same therapeutic area Same seniority Same country
85%similar
Roche Shanghai, Shanghai, China's Mainland Principal
Same function Same therapeutic area Same seniority
60%similar
Lilly Indianapolis, Indiana, United States of America Principal
Same function Same seniority Same country
60%similar
Lilly Indianapolis, Indiana, United States of America Principal
Same function Same seniority Same country
60%similar
AbbVie Worcester, MA Principal
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Notify me about similar jobs

Get an email when we spot other openings like this one – same job function, comparable seniority, roles you'd actually want to see.

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.

100%
Discovery Immunology Principal Research Scientist
Vertex Pharmaceuticals Inc (US) · Seattle, United States · Principal
Function Therapeutic area Seniority Country
60%
Advisor / Senior Advisor, CNS/PNS NAMs – Investigative Toxicology
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Function Therapeutic area Seniority Country
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Principal Scientist, Computational Biology
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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.