Associate Principal Scientist, Immunology Discovery

Merck (MSD)
Location
USA - California - San Diego (Science Park Road)
Job Type
Full-time
Posted
October 21, 2026
Salary Range
$142k - $224k USD

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:

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 applyHERE

Current Contingent Workers applyHERE

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. Pleaseclick hereif 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 primary location for this posting is:

USA - California - San Diego (Science Park Road)

Where required by law, the compensation range for this role is provided below.


The salary range for the primary location of this role is:

$142,400.00 - $224,100.00

This range reflects the Company's reasonable expectation of the base salary applicable to this role at the time of 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 athttps://jobs.merck.com/us/en/compensation-and-benefits.


Additional location(s):Please note the salary range above applies to the Primary Location of the position. Where a role has other listed locations, different compensation guidelines may apply. You may find the salary ranges for additional locations below. If the salary range is not listed for the location you are applying to, our Talent Acquisition team will provide further information to you relevant to your location.


Additional location(s) Compensation Information:

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

Re location:

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:

11/30/2026

*A job posting is effective until 11:59:59PM on the dayBEFOREthe listed job posting end date. Please ensure you apply to a job posting no later than the dayBEFOREthe job posting end date.

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Frequently Asked Questions

Where is this job located, and what is the work-mode policy?
The primary location is USA - California - San Diego (Science Park Road). Flexible work arrangements are listed as Not Applicable.
What qualifications and experience are required for this role?
Candidates need a degree in immunology, cell biology, molecular biology, or a related discipline with relevant experience: a Bachelor's with 13+ years, a Master's with 9+ years, or a Ph.D. with 5+ years. Required skills include a strong foundation in immunology/inflammation and hands-on experience with primary cell culture and tissue models.
What are the main responsibilities of the Associate Principal Scientist?
Key responsibilities include designing, executing, and analyzing translational experiments to validate therapeutic targets; developing in vitro, ex vivo, and patient-derived tissue models; integrating multi-omics and biomarker datasets; generating data packages for target prioritization; representing the function on project teams; collaborating across functions and CROs; and mentoring junior scientists.
What is the compensation range for this position?
The base salary range for the primary San Diego location is $142,400.00 to $224,100.00. Successful candidates may also be eligible for an annual bonus and long-term incentives.
Is visa sponsorship or relocation support available?
Yes, visa sponsorship is available for this role. Domestic and international relocation support is also provided.
What benefits does Merck offer for this role?
Merck provides medical, dental, and vision healthcare insurance for employees and families, retirement benefits including a 401(k), paid holidays, vacation, and compassionate and sick days.
What is the deadline to apply for this job posting?
The job posting end date is 11/30/2026. You must submit your application no later than 11:59:59 PM on the day BEFORE the listed end date (11/29/2026).

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  • Verified H-1B salary data
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Job Information

Source: workday
AI Relevance: 65/100 (Relevant)
Remote Type: onsite
Skills & Tags:
merck (msd) pharma

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