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Principal Scientist

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Principal Scientist

US - California - South San Francisco Apply Now
JOB ID: R-241849 LOCATION: US - California - South San Francisco WORK LOCATION TYPE: Flex Commuter / Hybrid DATE POSTED: Apr. 15, 2026 CATEGORY: Scientific SALARY RANGE: 165,636.95USD -224,097.05 USD

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. Amgen is advancing a broad and deep pipeline of medicines to treat cancer, heart disease, inflammatory conditions, rare diseases, and obesity and obesity-related conditions. 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.

Principal Scientist

What you will do

Let’s do this. Let’s change the world. In this vital role you will build, optimize, and scale the molecular characterization engines behind our GEM platform—bringing rigor, innovation, and technical leadership to the science that powers our research pipeline.

Key Responsibilities:

Genotyping, Molecular Characterization & Assay Development

• Design, develop, and execute genotyping and characterization assays using ddPCR, qPCR, long-read sequencing (ONT), and NGS platforms.
• Develop and implement validation strategies, including:
o Off-target analysis (e.g., CRISPR specificity, rhAmpSeq or similar approaches)
o Copy number variation (CNV) and zygosity determination
o Structural variant and insertion site mapping
o Allele configuration confirmation across model types
• Perform comprehensive characterization of GEMs, including CRISPR-engineered knockout, knock-in, conditional, large insertions, and complex multi-gene models.
• Integrate molecular and sequencing data to generate high-confidence conclusions and support delivery of fully characterized, high-quality models.

Technology Development & Automation

• Drive implementation and optimization of high-throughput workflows, including liquid handling automation and integrated genotyping pipelines.
• Evaluate and implement emerging technologies to enhance model characterization, throughput, and data quality.
• Contribute to continuous improvement of genotyping pipelines and sequencing-based workflows.
• Collaborate with bioinformatics and data teams, where applicable, to support data analysis workflows.

Instrumentation & Lab Infrastructure

• Apply technical expertise to the setup, optimization, and troubleshooting of key instrumentation platforms (e.g., ddPCR systems, ONT platforms, fragment analyzers, automation systems).
• Contribute to development and maintenance of SOPs, instrument logs, and performance tracking.
• Contribute to building scalable lab infrastructure to support increasing GEM portfolio complexity.

Cross-functional Collaboration

• Work closely with the GEM Lead to support execution of the GEM platform and associated workflows.
• Collaborate with Comparative Medicine, Therapeutic Areas, Functional Genomics, and external CROs to ensure coordination of activities.
• Act as a scientific resource to cross-functional teams in support of model validation strategies and risk assessment.
• Communicate clearly and proactively to support alignment on timelines, deliverables, and workflow dependencies.

Operational Excellence & Data Integrity

• Support implementation of sample tracking, data management, and reporting systems (e.g., Benchling or equivalent ELN platforms).
• Ensure accurate documentation and traceability from experimental design through model validation.
• Contribute to defining QC checkpoints that maintain scientific standards and reduce downstream risk.

Scientific Contribution & Knowledge Sharing

• Share expertise and contribute to training of lab personnel in genotyping and molecular workflows.
• Contribute to development of best practices and standardized workflows.
• Contribute to scientific and technical documentation (e.g., study reports, internal documentation, or publications) as appropriate.

Ethical & Scientific Stewardship

• Ensure work aligns with animal welfare considerations and 3Rs principles (Replacement, Reduction, Refinement).
• Contribute to optimization of workflows to improve efficiency and minimize unnecessary animal use.

What we expect of you

We are all different, yet we all use our unique contributions to serve patients. The Principal Scientist we seek is a deeply technical and highly pragmatic individual with these qualifications.

Basic Qualifications:

Doctorate degree PhD OR PharmD OR MD and 2 years of experience in genetically engineered models (GEM), genotyping, and molecular characterization

OR

Master’s degree and 5 years of experience in genetically engineered models (GEM), genotyping, and molecular characterization

OR

Bachelor’s degree and 7 years of experience in genetically engineered models (GEM), genotyping, and molecular characterization

Preferred Qualifications:

Strong hands-on expertise in:

  • CRISPR genome engineering and complex model generation
  • ddPCR, qPCR, and long-read sequencing (e.g., Oxford Nanopore Technologies)
  • NGS workflows and genomic analysis
  • Demonstrated experience supporting generation and characterization of complex GEM models (KO, KI, conditional, multi-allelic, transgenic) using CRISPR and/or ES cell-based approaches.
  • Experience with automation platforms and high-throughput screening workflows (e.g., Beckman, Tecan, acoustic dispensing).
  • Proven ability to contribute to lab workflow development, infrastructure setup, and process optimization.
  • Experience working with CROs and cross-functional teams in a research environment.
  • Proficiency with Benchling or similar ELN/LIMS platforms.
  • Strong communication, collaboration, and problem-solving skills.
  • Demonstrated experience supporting generation and characterization of complex GEM models (KO, KI, conditional, multi-allelic, transgenic) using CRISPR and/or ES cell-based approaches.
  • Experience with automation platforms and high-throughput screening workflows (e.g., Beckman, Tecan, acoustic dispensing).
  • Proven ability to contribute to lab workflow development, infrastructure setup, and process optimization.
  • Experience working with CROs and cross-functional teams in a research environment.
  • Strong communication, collaboration, and problem-solving 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.

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Application deadline

Amgen anticipates accepting applications until April 22nd, 2026; however, we may continue accepting applications beyond this date if we do not receive a sufficient number of candidates.

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.

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