Xaira Therapeutics
Scientist II, Antibody Discovery (Phage Display)
$124K–$155K
South San Francisco, California, United States · Full-time · Posted Jul 23, 2026
- Experience
- 2–4 years of relevant industry experience.
- Education
- PhD in Molecular Biology, Biochemistry, Immunology, Protein Engineering, or related field.
About the job
Own phage display campaigns from library design through hit validation, and generate high-quality antibody discovery data for AI model training.
What you'll do
- Design, execute, and optimize phage display campaigns, including selection strategies, QC, and hit validation.
- Develop library-scale binder measurement approaches and adapt assays for higher-throughput, automated formats.
- Partner with computational and ML colleagues on data generation and quality; mentor associate scientists and contribute to technical standards.
What they ask for
- PhD in Molecular Biology, Biochemistry, Immunology, Protein Engineering, or a related field.
- Significant hands-on antibody/protein discovery expertise using phage display, including library design, panning/selection, and hit validation.
- Hands-on flow cytometry (FACS) experience, including data interpretation and gating strategy.
- Strong analytical and problem-solving skills, rigorous documentation, and written and verbal communication skills.
Nice to have
- Molecular biology/library construction; membrane-protein targets; label-free affinity characterization; alternative display formats; lab automation or scripting; mammalian cell culture.
Pay
$124,000 to $155,000 USD annually (base salary)
Tools
phage display, flow cytometry (FACS), SPR, BLI/Octet, Hamilton, Tecan, Python, R
AI focus
Generate, structure, and QC antibody discovery data at scale for training AI antibody design models, in partnership with computational and ML colleagues.
Model-written summary · the original posting is authoritative