Xaira Therapeutics
Healthcare & Life SciencesDirect Greenhouse career site

Senior Scientist, Antibody Characterization

Pay
$136,000 – $170,000 per year
Location
South San Francisco, CA · On-site
Job type
Full-time
Level
Director
Experience
5+ years
Education
Doctorate
Listed
31 days ago

Skills & highlights for this role

  • SPR
  • BLI
  • ELISA
  • protein purification
  • GraphPad Prism

Also useful

  • Carterra
  • Biacore
  • DLS
  • DSF
  • SEC

About the Role

As a part of the Protein Analytics team, you will play a crucial role in discovering and developing novel biotherapeutics. The ideal candidate will have extensive experience characterization of monoclonal and bi/multispecific antibodies within a biotherapeutics discovery setting, coupled with a proactive and can-do attitude. This is a hands-on, lab-based position.

Responsibilities

  • Support the discovery and development of therapeutic molecules through hands-on laboratory work.
  • Characterize antibodies in high-throughput manner via biolayer interferometry (BLI) and surface plasmon resonance (SPR) based biosensor platforms to determine Yes/No binding, Kinetics and Affinity information.
  • Screen antibodies and other antibody-like molecules for off-target binding assessment via BVP ELISA or other poly-specificity/poly-reactivity assays.
  • Perform early developability assessment on antibody panels using SPR, DLS, DSF, SEC and ELISA platforms.
  • Support other workflows as needed, including fluorescence based binding assays and assay automation.
  • Analyze experimental data, curate results and reports, and present findings to cross-functional teams.
  • Maintain experimental records in an ELN.
  • Ensure compliance with laboratory safety protocols and contribute to lab organization and operations.

Qualifications

  • PhD degree in a relevant discipline with 5+ years of industry experience or a BS/MS degree with 10+ years of industry experience in biophysics, biochemistry, structural biology, or a related discipline
  • Candidates with fewer years of experience are also encouraged to apply, and the leveling of the role can be adjusted if needed
  • Extensive experience in antibody screening including monoclonals, bispecific, and other antibody-like molecules.
  • Extensive hands-on experience with ELISA, BLI and SPR based platforms (Carterra, Biacore).
  • Basic knowledge of protein production, purification and characterization techniques (including affinity, ion exchange, HIC, DLS, DSF and SEC).
  • Proficiency in data analysis software (e.g., GraphPad Prism) and other statistical tools.
  • Proactive attitude with a self-starter mindset.
  • Strong organizational, communication, and interpersonal skills.
  • Strong collaborative skills and interest in working in cross-functional teams and a startup environment.
  • Excellent problem-solving and troubleshooting abilities.
  • Ability to work independently with accountability and meticulous attention to detail.

Compensation

We offer a competitive compensation and benefits package, seeking to provide an open, flexible, and friendly work environment to empower employees and provide them with a platform to develop their long-term careers. A Summary of Benefits is available for all applicants. We offer a competitive package that includes base salary, bonus, and equity. The base pay range for this position is expected to be $136,000 - $170,000 annually; however, the base pay offered may vary depending on the market, job-related knowledge, skills and capabilities, and experience.

Xaira Therapeutics an equal-opportunity employer. We believe that our strength is in our differences. Our goal to build a diverse and inclusive team began on day one, and it will never end.

To All Recruitment Agencies

Xaira Therapeutics does not accept agency resumes. Please do not forward resumes to our jobs alias or employees. Xaira Therapeutics is not responsible for any fees related to unsolicited resumes.

About Xaira Therapeutics

Xaira is an innovative biotech startup focused on leveraging AI to transform drug discovery and development. The company is leading the development of generative AI models to design protein and antibody therapeutics, enabling the creation of medicines against historically hard-to-drug molecular targets. It is also developing foundation models for biology and disease to enable better target elucidation and patient stratification.

Collectively, these technologies aim to continually enable the identification of novel therapies and to improve success in drug development. Xaira is headquartered in the San Francisco Bay Area, Seattle, and London.

Read the original posting

From Xaira Therapeutics's careers page, first listed on Rolev.ai on October 10, 2026. Rolev.ai is not the employer.

How Rolev.ai helps with this application

Rolev.ai is a job search and application tool for US job seekers. For this Senior Scientist, Antibody Characterization role at Xaira Therapeutics, it shows how your resume fits, tailors your resume to the posting, and prepares the application for you to review.

  • See how you fit

    Openings from employer career sites are ranked against your whole resume—and searchable inside Claude, ChatGPT, and Cursor via Rolev.ai MCP.

  • Tailor without inventing

    Every change to your resume is checked against your original. New experience goes in only with your yes—zero fabricated claims.

  • Draft the full kit

    Tailored and Full Match resumes, role-specific cover letters, and answers to employer screening questions are prepared in seconds.

  • 1-Click Extension Autofill

    The Chrome extension fills the employer's Greenhouse, Workday, Lever, or Ashby form in 1 click. You review it and press Submit.

Common questions

What is the salary for the Senior Scientist, Antibody Characterization role at Xaira Therapeutics?

The Senior Scientist, Antibody Characterization posting at Xaira Therapeutics states compensation of $136,000 – $170,000 per year. It is listed as a full-time position. Final pay may depend on location, experience, and interview evaluation on Xaira Therapeutics's official career site.

Where is the Senior Scientist, Antibody Characterization job at Xaira Therapeutics located?

This Senior Scientist, Antibody Characterization position at Xaira Therapeutics is located in South San Francisco, CA (On-site). Always check Xaira Therapeutics's application page for specific state eligibility or relocation policies.

What qualifications are required for Senior Scientist, Antibody Characterization at Xaira Therapeutics?

For the Senior Scientist, Antibody Characterization role, Xaira Therapeutics highlights 5+ years of relevant experience; a doctorate; experience with SPR, BLI, ELISA, protein purification, GraphPad Prism. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.

How do I apply for the Senior Scientist, Antibody Characterization position at Xaira Therapeutics?

This listing links directly to Xaira Therapeutics's Greenhouse application page. You can apply directly on Xaira Therapeutics's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Greenhouse application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.