Amgen Inc. Posted April 14, 2026

Sr. Principal Scientist - Project Toxicologist

Remote, United States Full time
Drug Discovery & Preclinical Research Principal

Amgen Inc. 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

Career Category

Scientific

Job Description

Join Amgen’s Mission of Serving Patients

At Amgen, if you feel like you’re part of something bigger, it’s because you are. Our shared mission, to serve patients living with serious illnesses, drives all that we do.

Since 1980, we’ve helped pioneer the world of biotech in our fight against the world’s toughest diseases. With our focus on four therapeutic areas –Oncology, Inflammation, General Medicine, and Rare Disease– we reach millions of patients each year. As a member of the Amgen team, you’ll help make a lasting impact on the lives of patients as we research, manufacture, and deliver innovative medicines to help people live longer, fuller happier lives.

Our award-winning culture is collaborative, innovative, and science based. If you have a passion for challenges and the opportunities that lay within them, you’ll thrive as part of the Amgen team. Join us and transform the lives of patients while transforming your career.

Sr. Principal Scientist - Project Toxicologist

What you will do

Let’s do this. Let’s change the world. In this vital role, you will serve as the primary interface between Translational Safety & Risk Sciences (TSRS) and cross‑functional project teams, from early discovery through post-marketing. TSRS at Amgen is seeking a Senior Principal Scientist to serve as a Project Toxicologist and Subject Matter Expert, reporting to a Project Team Representative (PTR) Manager.

You will be responsible for developing and implementing fit-for-purpose nonclinical safety strategies built on a rigorous scientific foundation and aligned with regulatory expectations. As programs evolve, you will flexibly adapt strategies in response to emerging data, and project team needs while leading multidisciplinary TSRS teams.

As a PTR, you will partner closely with project teams developing innovative therapeutics across a range of modalities, including biotherapeutics (e.g. T cell engagers and antibody-drug conjugates), small molecules, targeted protein degraders, and other complex modalities (e.g. RNA-based therapies) for indications in inflammation, rare diseases, oncology, and cardiometabolic diseases, including obesity. PTRs are encouraged to develop subject matter expertise in a specific modality, therapeutic area, or sub-discipline within nonclinical safety (e.g. organ/system-specific toxicity).

Key Responsibilities

Serve as a core toxicology and nonclinical safety representative on project teams, providing scientific leadership and regular updates to teams and management.

Design, implement, manage and interpret nonclinical safety assessment programs in support of drug development candidates.

Originate novel study designs and protocols to address complex scientific questions and develop integrated strategies to achieve project goals.

Critically evaluate and interpret experimental data and author key sections of internal governance documents, INDs, BLAs, NDAs and other regulatory documents.

Coordinate and collaborate with internal Amgen scientists and external partners to advance research and development programs.

Participate in licensing, due diligence, and external partnering activities, as appropriate.

Mentor and support other Amgen scientists in the design execution and oversight of nonclinical studies.

Represent Amgen on nonclinical safety topics in interactions with U.S. and international regulatory agencies, and contribute to external industry initiatives aimed at advancing drug safety assessment paradigms.

What we expect of you

We are all different, yet we all use our unique contributions to serve patients. The dynamic professional we seek is a leader with these qualifications.

Basic Qualifications:

Doctorate degree PhD OR PharmD OR MD and 3 years of experience as project team representative (PTR) for nonclinical safety sciences within drug development teams

Or

Master’s degree and 6 years of PTR experience

Or

Bachelor’s degree and 8 years of PTR experience

Preferred Qualifications:

8+ years post-PhD degree of Pharmaceutical and/or Biotechnology industry experience, including 5+ years as a Toxicologist/Nonclinical Safety Project Team Representative.

Demonstrated leadership of toxicology programs supporting nonclinical safety assessment of drug development candidates.

Extensive experience authoring regulatory documents and interacting with U.S. and international regulatory agencies.

Board certification in Toxicology.

Excellent written and verbal communication skills, with the ability to work independently and build productive cross-functional collaborations both internally and externally.

Working knowledge of emerging science and technologies applied to enhance investigation of drug development safety issues.

·Emerging or developed recognition as a national and/or international field expert.

Demonstrated experience serving as project team representative for nonclinical safety sciences within drug development teams, including contributing to IND/CTA filings and broader nonclinical development activities.

A strong understanding of cross-functional needs is essential, along with the ability to develop integrated, fit-for-purpose plans that enable successful development of a therapeutics.

Proven experience working effectively in matrixed organization, with strong communication and interpersonal skills.

What you can expect of us

As we work to develop treatments that take care of others, we also work to care for your professional and personal growth and well-being. From our competitive benefits to our collaborative culture, we’ll support your journey every step of the way.

The expected annual salary range for this role in the U.S. (excluding Puerto Rico) is posted. Actual salary will vary based on several factors including but not limited to, relevant skills, experience, and qualifications.

In addition to the base salary, Amgen offers a Total Rewards Plan, based on eligibility, comprising of health and welfare plans for staff and eligible dependents, financial plans with opportunities to save towards retirement or other goals, work/life balance, and career development opportunities that may include:

A comprehensive employee benefits package, including a Retirement and Savings Plan with generous company contributions, group medical, dental and vision coverage, life and disability insurance, and flexible spending accounts

A discretionary annual bonus program, or for field sales representatives, a sales-based incentive plan

Stock-based long-term incentives

Award-winning time-off plans

Flexible work models where possible. Refer to the Work Location Type in the job posting to see if this applies.

Apply now and make a lasting impact with the Amgen team.

careers.amgen.com

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Application deadline

Amgen does not have an application deadline for this position; we will continue accepting applications until we receive a sufficient number or select a candidate for the position.

Sponsorship

Sponsorship for this role is not guaranteed.

As an organization dedicated to improving the quality of life for people around the world, Amgen fosters an inclusive environment of diverse, ethical, committed and highly accomplished people who respect each other and live the Amgen values to continue advancing science to serve patients. Together, we compete in the fight against serious disease.

Amgen is an Equal Opportunity employer and will consider all qualified applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability status, or any other basis protected by applicable law.

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

. Salary Range

168,392.65USD -227,825.35 USD

Job details

Seniority
Principal
Function
Drug Discovery & Preclinical Research
Therapeutic area
Not listed
Location
Remote, United States
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 193 comparable Principal Drug Discovery & Preclinical Research roles across 31 biopharma companies.

193Comparable roles tracked
172Currently active
31Companies hiring similar roles
12Countries represented

Salary context

65 of 193 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
Peer group range $105,700 – $322,000 (median $165,300)

Where these roles are based

Top locations among the 193 comparable roles

United States158
India9
United Kingdom5
Canada4
China's Mainland3
China3

+ 6 more countries

Seniority mix

193 of 193 peers have a known seniority level

Senior111
Principal56
Director26

Therapeutic area mix

29 of 193 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Oncology16
Immunology5
Cardiovascular / CVRM5
Neuroscience1
Vaccines & Infectious Disease1
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.

60%similar
AstraZeneca Gaithersburg, Maryland, 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
Lilly Indianapolis, Indiana, United States of America Principal
Same function Same seniority Same country
60%similar
Lilly San Francisco, California, 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 Cambridge, MA Principal
Same function Same seniority 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.

60%
Principal Scientist Drug Product Development
AstraZeneca · Gaithersburg, Maryland, United States of America · Principal
Function Therapeutic area Seniority Country
60%
Sr Scientist/Principal Scientist, Discovery Oncology (in vivo Biology)
Lilly · San Francisco, California, United States of America · Principal
Function Therapeutic area Seniority Country
60%
Principal Research Scientist I, Process Chemistry (Biocatalysis)
AbbVie · North Chicago, IL · Principal
Function Therapeutic area Seniority Country
60%
Associate Principal Scientist, Immunology Discovery
Merck · San Diego, California, United States of America · Principal
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.