More jobs:
Research Associate, Research Scientist, Biotech Research
Job in
San Francisco, San Francisco County, California, 94199, USA
Listed on 2026-09-25
Listing for:
Medix™
Full Time
position Listed on 2026-09-25
Job specializations:
-
Research/Development
Research Scientist, Biotech Research
Job Description & How to Apply Below
We are seeking a highly hands-on Research Associate or Scientist to support protein production and quality control workflows as we scale up for our customer's next phase of growth. Working alongside cross-functional scientists and engineers, you will execute, validate, and optimize protein expression, purification, and analytical characterization as part of an automated, high-throughput lab platform.
Responsibilities- Cell Culture & Expression: Run automated mammalian cell growth and transient transfection for recombinant protein expression, including cell maintenance, expansion, and scaling.
- Purification: Perform protein purification on AKTA (FPLC) and King Fisher platforms, including affinity capture, polishing, buffer exchange, and magnetic-bead-based processing.
- Analytical QC: Execute analytical QC by SEC (analytical UPLC/HPLC) to assess purity, aggregation, and monomericity, as well as supporting secondary QC (concentration, endotoxin, SDS‑PAGE).
- Automation
Collaboration:
Partner with roboticists and software engineers to translate manual purification and QC steps into reliable, autonomous protocols. - Data Analysis & Documentation: Perform first-pass data analysis on chromatograms and SEC traces, maintaining rigorous experimental records in Electronic Lab Notebooks (ELN) and contributing to SOP development.
- B.S. or M.S. in Biochemistry, Molecular Biology, Chemical/Biological Engineering, or a related scientific discipline with hands‑on lab experience.
- Hands‑on experience personally running or developing 2+ of the following specific assays/instruments:
- -aSEC purity — Waters UPLC
- -Hydrophobic interaction (HI) — PAIA Biotech plate assay (Cytation readout)
- -OVA off‑target binding — Cytation readout
- -Thermal stability (nanoDSF) — Unchained Labs Aunty
- -Polydispersity (DLS) — Unchained Labs Aunty
- Direct hands‑on experience with protein purification (chromatography on AKTA/FPLC and/or bead‑based processing) and taking a sample from lysate/supernatant to purified protein.
- Strong wet‑lab skills, including mammalian cell culture, aseptic technique, and careful execution of detailed protocols.
- Basic understanding of antibody structure and function, strong documentation habits, and high attention to detail.
- Experience with analytical SEC or other analytical chromatography (UPLC/HPLC).
- Experience with automated or high‑throughput purification (e.g., King Fisher, multi‑column AKTA, robotic systems).
- Experience scaling mammalian expression systems (CHO/HEK) and transient transfection.
- Experience with lab automation or liquid handling platforms (e.g., Dynamic Devices Lynx, Tempest).
- Familiarity with alternative binder formats (VHHs, bispecifics, Fc‑fusions, or non‑Ig scaffolds).
- Basic scripting or data‑handling skills (Python/R) for organizing and analyzing purification and QC data.
Position Requirements
10+ Years
work experience
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