Skip to main content
Back to jobs

Senior Scientist, mRNA engineering

External
newlimit logoNewlimit · South San Francisco
$160K–$185K/yrFull-timeOn-site2mo ago
Machine LearningPython
Cover LetterConnect

Prepare for this interview

Elite

AI-generated questions, company research, and talking points tailored to this role


Responsibilities

  • As a member of our team, you will:
  • Execute and scale end-to-end mRNA production, including template preparation, in vitro transcription (IVT), and purification (TFF, chromatography).
  • Implement rigorous quality control assays, including direct RNA sequencing, fragment analysis, dsRNA quantitation, and residual contaminant analysis.
  • Author and maintain detailed SOPs and batch records, ensuring all production runs meet GLP standards.
  • Independently design and execute experiments to improve mRNA sequence potency, specificity, and manufacturing performance.
  • Train, manage, and mentor other team members on mRNA optimization and production workflows.

Requirements

  • PhD in molecular biology, biochemistry, cell biology, or a related field or equivalent industry experience (5+ years).
  • Deep hands-on experience with IVT and the specific challenges of scaling nucleic acid production.
  • Proficiency with TFF and chromatography systems for the purification of large scale RNA batches.
  • Ability to perform and interpret mRNA QC assays and troubleshoot mRNA production challenges.
  • Strong experience in drafting technical reports and standardized protocols.
  • Familiarity with Python or R for sequence analysis and secondary structure prediction.
  • Understanding of how mRNA quality attributes impact Lipid Nanoparticle (LNP) formulation and delivery.
  • Experience with complex plasmid design and bacterial scale-up for DNA template generation.
  • Experience managing external contract manufacturing organizations (CMOs)

Benefits

NewLimit offers generous benefits to ensure our team can focus on our mission:Health, dental, and vision insurance401(k) with company matchPaid parental leaveIndustry-leading paid time off (PTO) - 20 days/year for all employees + holidaysMeals and snacks on-siteHealth insuranceDental insuranceVision insurance401(k)Paid time offParental leave

Additional Information

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 a Senior Scientist to drive our mRNA production and engineering efforts. This is a hands-on, lab based role focused on the synthesis, purification, and characterization of mRNA at large scales and high purities. You will serve as the technical lead for our production workflow, bridging the gap between molecular design and high quality material generation for in vivo and in vitro studies.


Your Match

How well this role fits your profile.

Company Intel

What employees say

Worked at newlimit? Share your experience

Interested in this role?

Apply on the company's website.

Cover LetterConnect