Principal Scientist, Biology
Xaira Therapeutics · South San Francisco, California, United States
Posted 8 days ago · $164,000-$205,000
or apply directly on Xaira Therapeutics's site. We never take the application ourselves.
Is this posting real?
- This role has been open
- 8 days Xaira Therapeutics's roles stay open a median of 44 days
- Reposted
- No
- Salary listed
- Yes 100% of Xaira Therapeutics's roles list one
- Ghost-job risk at Xaira Therapeutics
- high 12 stale, 1 reposted of 24 open
- Hiring momentum
- 33 roles opened in the last 90 days ↑ up vs. the prior 90 days
- Last confirmed on the employer's board
- 2026-09-17
Measured from postings appearing on and disappearing from Xaira Therapeutics's own greenhouse board since 2026-08-03. Full hiring picture for Xaira Therapeutics.
About this role
As a Principal Scientist in Biology at Xaira Therapeutics, you will lead therapeutic program strategies in Inflammation and Immunology, combining hands-on research with strategic oversight. Your responsibilities include designing and executing experiments, generating new biology target ideas, and presenting findings to senior leadership. You will also mentor junior scientists and contribute to the development of best practices within the lab.
- benefits
- 2/5
- freshness
- 5/5
- career value
- 4/5
- role clarity
- 5/5
- pay transparency
- 5/5
Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Xaira Therapeutics as an employer.
What you need
- PhD in Immunology or a related field
- 6+ years of relevant experience
- Track record of impact through first-author publications, posters, and presentations at meetings
- Demonstrated ability to independently define research strategy, plan and oversee complex experiments, and interpret data to guide program direction
- Strong expertise in in vitro and ex vivo immunology, including primary immune assays, co-culture systems, target cell depletion assays, and high-parameter flow cytometry
- Proven ability to independently plan, execute, troubleshoot, and interpret experiments
Nice to have
- Single-cell RNA sequencing (scRNAseq), CRISPR/Cas9, and omics data analysis experience
What you get
- Competitive compensation and benefits package
- Base salary, bonus, and equity
- Open, flexible, and friendly work environment
- Platform for long-term career development
Worth weighing
- Base pay range is $164,000-$205,000, but may vary based on market and experience
- No specific mention of remote work options or flexible hours
- Startup environment may involve rapid changes and high expectations
Summarised from Xaira Therapeutics's posting. Read the full original.
Listed by Xaira Therapeutics on their greenhouse job board, last confirmed open on 2026-09-17. PitchMeAI is not the employer.
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