CareerPlan

Scientist, mRNA Downstream Purification

South San FranciscoFull-time$120k–$155k2026-10-20 → 2026-11-11

Core

Lead downstream process development and scale-up for mRNA drug substance purification.

Role type

Scientist, downstream process development (mRNA biologics)

Builds

mRNA drug substance for discovery and preclinical studies

Domain

Biotechnology / mRNA therapeutics / Epigenetic reprogramming

Required skills

downstream purification process design, tangential flow filtration (TFF), ÄKTA chromatography operation, experimental design and troubleshooting, complex data analysis, technical writing

Preferred skills

nucleic acid purification methods, plasmid DNA purification, Design of Experiments (DoE), automated high-throughput workflows, CDMO tech transfer, cGMP process development, mRNA analytics (HPLC, CGE, dsRNA ELISA)

Responsibilities

Design and execute process development studies for mRNA purification; Act as downstream lead for CMC program teams; Design and implement automated downstream workflows; Support process scale-up from bench to pilot; Evaluate emerging purification technologies and chromatography resins; Perform tech transfer of downstream processes to CDMOs; Act as person in plant during CDMO manufacturing runs; Support process troubleshooting and deviation investigations at CDMOs; Author development SOPs and technical development reports

Seniority

Mid-level Scientist (0-3 years PhD or 5+ years MS/BS)