Role Description As a Senior AI Scientist at Atria, you will own the development of the medical models at the heart of Atria's clinical AI agenda: - Domain-specific models for clinical problems that matter most to our practice today. - Foundation models for preventive medicine that learn underlying patterns of health evolution. - Access to a unique data estate including whole-genome sequencing, advanced imaging, and family-linked records. Your core job is to take the best of what the open-source ecosystem has to offer and turn it into models that materially outperform off-the-shelf options on Atria's problems. What you'll do - Own the medical modeling roadmap at Atria: identify model families and training approaches. - Survey the open-source landscape and make defensible recommendations on fine-tuning or building models. - Design and validate novel architectures for longitudinal multi-modal data. - Lead fine-tuning and post-training work: SFT, LoRA/QLoRA, DPO, RLHF/RLAIF, continued pre-training, and distillation. - Curate high-quality training datasets from Atria's clinical data. - Design and run rigorous evaluations: held-out clinical benchmarks, calibration analysis, subgroup performance. - Run training and evaluation on appropriate infrastructure with proper experiment tracking. - Stay current with literature relevant to Atria's needs. - Collaborate with clinicians and research partners on model evaluation and training. What you'll bring - A bias toward shipping models rather than papers. - A scrappy streak: ability to quickly learn unfamiliar techniques and concepts. - A serious drive to keep improving and learning from others. - Graduate degree (PhD preferred) in a relevant field or strong open-source track record. - Hands-on experience training and fine-tuning deep learning models (4+ years). - Deep fluency with modern fine-tuning and post-training methods. - Strong working knowledge of the open-source model ecosystem. - Strong Python and PyTorch skills, with experience in the Hugging Face ecosystem. - Practical experience with training infrastructure. - Discipline around evaluation and ablation in modeling work. - Genuine interest in healthcare and its responsibilities. Nice to have - Experience building multimodal medical models. - Familiarity with clinical/biomedical foundation models. - Peer-reviewed publications in relevant fields. - Experience with reinforcement learning and frontier post-training techniques. - Experience with model interpretability and uncertainty quantification. - Prior collaboration with clinicians on models that shipped. Salary and Benefits - Salary range: $180,000 - $260,000 base salary + performance-based bonus. - Excellent health and wellness benefits, fully covered by Atria, effective date of hire. - OneMedical membership for employees & dependents, providing access to 24/7 virtual care. - Fertility & family planning support. - Company-covered preventive health screenings through partner hospitals. - Fitness Perks, including Wellhub +. - 401k contributions and 4% match starting after 6 months. - Flexible Time Off. - Continuing medical education (CME) and CEU support for professional licensure.