AI Scientist - Biomedical Multimodal Modeling

Xaira Therapeutics

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South San Francisco, California, US Until 8/21/2026 H-1B sponsor history First posted May 4, 2026 Last posted May 4, 2026
Job description

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.

About the Role
We are building foundation models for biological systems, focusing on learning from complex, multimodal data. Our approach combines representation learning and generative modeling to capture structure, variation, and latent organization in high-dimensional settings. We work with both image-based data and high-dimensional molecular (omics) measurements, treating them as complementary views of the same underlying system. Our goal is to develop models that can both encode rich representations and generate or infer missing aspects from partial observations.

What You’ll Do
  • Develop multimodal foundation models spanning image and molecular data
  • Design approaches that unify representation learning and generative modeling
  • Train large-scale models on structured, high-dimensional datasets
  • Explore cross-modal alignment, prediction, and generation
  • Build scalable systems for data processing, training, and evaluation
  • Work in a research-driven environment with evolving problem definitions

What We’re Looking For

Strong background in deep learning, especially in modern architecture
  • Experience with representation learning (self-supervised, contrastive, masked modeling, etc.)
  • Experience with generative modeling (diffusion, autoregressive models, VAEs, or related approaches)
  • Proficiency in Python, ML frameworks, and CI/CD (PyTorch, JAX, etc.)
Relevant Experience
  • Work on multimodal learning or cross-domain representation learning
  • Experience with image data, molecular / omics-like data, or both
  • Familiarity with large-scale training
Bonus
  • Exposure to biological or scientific datasets
  • Experience with paired or partially aligned multimodal data
  • Comfortable working in open-ended, evolving problem spaces

 

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 $170,000 - $240,000 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 this role

Summary

Develop multimodal models for image and molecular data using deep learning techniques

Job title

AI Scientist - Biomedical Multimodal Modeling

Experience level

professional with relevant experience

Industry

biotech

Location requirements

South San Francisco, remote work not specified

Salary

The base pay range for this position is expected to be $170,000 - $240,000 annually; however, the base pay offered may vary depending on the market, job-related knowledge, skills and capabilities, and experience.

Visa sponsorship

H-1B sponsor history

Management role

No

Skills & keywords

Required skills

pythonpytorchjaxdeep learningrepresentation learninggenerative modeling

Preferred skills

biological datasetsmultimodal learninglarge-scale training

Specializations

deep learningrepresentation learninggenerative modelingmultimodal databiomedical data
Locations

Structured locations inferred from the posting.

South San Francisco, CA, USA

Work arrangement unknown City