Principal Scientist, Toxicology

Custom Field 1:  2160
Date:  Sep 11, 2025
Location: 

Cambridge, MA, US, 02142

Overview:


We are seeking a highly motivated individual with drug development and regulatory toxicology experience to join our expanding Toxicology group within our Early Development (eDEV) functional area. Candidates should have doctoral level research training in toxicology or related discipline and preferably be board-certified in general toxicology (DABT). The candidate will develop the regulatory toxicology strategy for selected programs, design and supervise internal

and contract laboratory studies, review and finalize reports, and interpret and integrate all nonclinical findings, and then summarize into regulatory submissions. For early-stage programs, the successful candidate will assess target associated toxicities, identify the potential toxicity and define the therapeutic index of product development candidates. For development and

clinical-stage programs, he/she will lead all regulatory toxicology activities for assigned programs. An additional key role for this position will be to represent the Early Development functional area on assigned drug development program teams.

 

This position is onsite and will be primarily located in Cambridge, MA.  

 

Key Responsibilities

 

The successful candidate will have a key role in developing regulatory toxicology strategies and providing deep scientific interpretation of nonclinical findings as to their relevance and translation into clinical and regulatory development. The role will involve overseeing the conduct of non-GLP screening toxicity studies and managing externallyconducted GLP toxicology studies to support development of multiple drug candidates in Alnylam's industry-leading RNAi Therapeutics pipeline.

  • Collaborate with Research to inform on in vivo study design and interpretation as part of lead candidate selection
  • Collaborate with medicinal chemists and analytical scientists to ensure synthesis, formulation, and delivery of test articles for use in toxicology studies.
  • Collaborate with DMPK and bioanalytical scientists to design and integrate DMPK results from studies on all assigned research and drug development programs.
  • Use available published literature and other relevant sources to author target safety assessments for new therapeutic targets
  • Represent Toxicology and Early Development on project teams, guiding development programs and project prioritization by responding quickly to data from ongoing studies and providing input to management and development teams.
  • Prepare and review toxicology sections of regulatory documents, including preIND packages, INDs, clinical trial applications (CTAs), Investigator Brochures, special protocol reviews, regulatory Briefing Documents and NDAs/MAAs.
  • Summarize experimental results for presentations both within and outside of the company, particularly representing the findings to regulatory authorities.

 

 

Qualifications:

 

  • Ph.D. with postdoctoral experience in toxicology or a related field  with 5-7+ years relevant experience in the biotechnology/pharmaceutical industry.
  • DABT preferred for the toxicologist.
  • The candidate should have an understanding of the biology associated with RNAi and its application for therapeutic intervention across multiple disease indications
  • Previous experience in managing nonclinical toxicology/safety programs, and design, execution, and regulatory reporting of GLP toxicology and safety pharmacology studies is required. Experience in drug development and regulatory submissions, including IND/CTA and NDA is desired.
  • A proven track record of successful regulatory submissions will enhance candidate consideration.
  • Individual needs to be open-minded, self-motivated, attentive to detail, capable of identifying and solving problems independently, and dedicated to quality and safety of therapeutics.
  • Given that the successful candidate will have leadership responsibilities for representing drug safety evaluation on the relevant multi-functional program teams, he/she will have the ability to independently set and convey the toxicology and non-clinical strategy to colleagues across the R&D matrix.
  • He/she should be an outstanding communicator and presenter in order to communicate our progress to key internal and external audiences.
  • Consistent with the strong scientific basis for all aspects of our work, he/she should enjoy a fast-paced, data-driven environment working in a matrix with various colleagues from R&D to help establish the road map for the discovery and development of RNAi therapeutics.

U.S. Pay Range

$148,200.00 - $208,800.00

The pay range reflects the full-time base salary range we expect to pay for this role at the time of posting. Base pay will be determined based on a number of factors including, but not limited to, relevant experience, skills, and education. This role is eligible for an annual short-term incentive award (e.g., bonus or sales incentive) and an annual long-term incentive award (e.g., equity).

Alnylam’s robust Total Rewards package is designed to support your overall health and well-being. We offer comprehensive benefits including medical, dental, and vision coverage, life and disability insurance, a lifestyle reimbursement program, flexible spending and health savings accounts and a 401(k)with a generous company match. Eligible employees enjoy paid time off, wellness days, holidays, and two company-wide recharge breaks. We also offer generous family resources and leave. Our commitment to your well-being reflects our belief that caring for our people fuels the impact we create together.

Learn more about these and additional benefits offered by Alnylam by visiting the Benefits section of the Careers website: https://www.alnylam.com/careers

About Alnylam

We are the leader in RNAi therapeutics – a revolutionary approach with the potential to transform the lives of people with rare and common diseases. Built on Nobel Prize-winning science, Alnylam has delivered the breakthroughs that made RNAi therapeutics possible and are just at the beginning of what’s possible. Our deep pipeline, late-stage programs, and bold vision reflect our core values: fierce innovation, passion for excellence, purposeful urgency, open culture and commitment to people. We're proud to be a globally recognized top employer, where an authentic, inclusive culture and breakthrough thinking fuel one another.

At Alnylam, we commit to an inclusive recruitment process and equal employment opportunity. Qualified applicants will receive consideration for employment without regard to their sex, gender or gender identity, sexual orientation, race, color, ethnicity, national origin, ancestry, citizenship, religion, creed, physical or mental disability, pregnancy status or related conditions, genetic information, veteran or military status, marital or familial status, political affiliation, age, or any other factor protected by federal, state, or local law. Alnylam is an E-Verify Employer.


Nearest Major Market: Cambridge
Nearest Secondary Market: Boston