Scientist/Senior Scientist

South San Francisco, CA Until 8/23/2026 First posted September 26, 2025 Last posted September 26, 2025
Job description

About NewLimit

NewLimit is a biotechnology company working to radically extend human healthspan. We’re developing medicines to treat age-related diseases by reprogramming the epigenome, a new therapeutic mechanism to restore regenerative potential in aged and diseased cells. We leverage functional genomics, pooled perturbation screening, and machine learning models to unravel the biology of epigenetic aging and disease using experiments of unprecedented scale.

Position

NewLimit is seeking an scientist with experience in discovery biology to join our Vascular therapeutic team. Our Vascular program is developing reprogramming medicines to restore youthful function in aged endothelial cells for the treatment of renal, cardiometabolic, and cognitive diseases.

Your role will focus on developing and deploying assays to measure the functional decline that occurs in endothelial cells with age. You will collaborate closely with our technology teams to help create the first reprogramming medicines for the vascular tissue that supports all others.

What you'll do

In your role as a Scientist, you will:

  • Develop functional assays and pre-clinical models to measure endothelial cell function
  • Collaborate with our Functional Genomics and Predictive Modeling teams to test reprogramming hypotheses at scale
  • Measure the impact of mRNA reprogramming medicines on endothelial cell function
  • Engineer in vivo nucleic acid delivery methods for endothelial cells
  • Analyze and interpret experimental data to drive pre-clinical decision making

Requirements

  • Ph.D. in cell biology, molecular biology, biochemistry or a related field or equivalent industry experience (5+ years)
  • Experience with primary cell isolation and functional characterization
  • Experience working with mouse models (e.g. kidney, cardiovascular, or cognitive disease models)
  • Experience with transgenic manipulation of primary cells either ex vivo or in vivo (e.g. using viral vectors, nucleic acid delivery)

Nice to have

  • History of contributing to a drug development program at the pre-clinical or clinical development stage
  • Experience leading the design and execution of pre-clinical studies in mouse models
  • Experience with single cell genomics methods
  • Experience with pooled screening approaches using bulk or single cell read-outs (e.g. CRISPR fitness screens, Perturb/CROP-seq)

Benefits

NewLimit offers generous benefits to ensure our team can focus on our mission:

  • Health, dental, and vision insurance
  • 401(k) with company match
  • Paid parental leave
  • Industry-leading paid time off (PTO) — 20 days/year for all employees + holidays
  • Meals and snacks on-site

 

Salary Range: $130,000 to $180,000. Compensation for the role will depend on a number of factors, including a candidate’s qualifications, skills, competencies, and experience. NewLimit offers a competitive benefits package, which includes a 401k, healthcare coverage, and 20 days of PTO. Learn more at: https://www.newlimit.com/careers   *This compensation and benefits information is based on Company's good faith estimate as of the date of publication and may be modified in the future.

 

About this role

Summary

Develop assays, models, and analyze data to study endothelial cell function in aging.

Job title

Scientist/Senior Scientist

Experience level

5+ years

Industry

biotechnology

Location requirements

South San Francisco, CA, on-site; remote not specified

Salary

$130,000 to $180,000

Management role

No

Skills & keywords

Required skills

primary cell isolationfunctional characterizationmouse modelstransgenic manipulationviral vectors

Preferred skills

drug developmentpre-clinical studiessingle cell genomicspooled screening

Specializations

cell biologymolecular biologybiochemistryassay developmentmouse models
Locations

Structured locations inferred from the posting.

South San Francisco, CA, USA

On-site City