Senior Machine Learning Engineer

📋 Job Overview

Join the Clinical Team at Midjourney Medical as a Senior Machine Learning Engineer. You will be responsible for developing and maintaining advanced machine learning models for clinical analysis, specifically focusing on tissue-class segmentation and labeling for ultrasound CT imaging.

🏢 About Midjourney

Midjourney is a company at the forefront of medical imaging technology, leveraging cutting-edge machine learning to improve clinical outcomes and patient care.

🎯 The Role

As a Senior Machine Learning Engineer, you will own the tissue-class segmentation and labeling models for the ultrasound CT clinical analysis layer, and the pipelines that make them trainable and verifiable. You will retune models across 2D per-slice, 3D volumetric, and 2D×3D fusion as reconstructed image inputs are continuously updated, and clinical indications for use expand.

✅ Key Responsibilities

• Own the tissue-class segmentation and labeling models for the ultrasound CT clinical analysis layer, and the pipelines that make them trainable and verifiable.
• Retune across 2D per-slice, 3D volumetric, and 2D×3D fusion as reconstructed image inputs are continuously updated, and clinical indications for use expand.
• Define training/evaluation pipelines, datasets, and metrics from the ground up or from open source; map model behavior to user needs and design requirements.
• Work with data labeling contractors, expert clinicians, and our internal cloud/data teams on labeling specs, QC, and dataset versioning.
• Help productionize models into a versioned, HIPAA-bound analysis service: reproducible/low-latency inference, per-prediction confidence, drift monitoring, and safe fallbacks.

📌 Required Qualifications

• Strong applied ML experience with a track record of developing new models — architecting, training, and evaluating from scratch as well as benchmarking against existing models.
• Experience with image segmentation (semantic/instance, 2D and ideally 3D/volumetric) and the modeling and training-data choices that make it robust across diverse patient anatomy.
• Comfortable moving fluidly between open-ended research iteration and producing quantifiable, testable models.
• Fluent in modern deep-learning tooling (e.g., PyTorch) and current development practices.
• Comfortable working under design controls, where model changes carry documentation and verification weight.

⭐ Desirable Experience

• Image segmentation and label generation with modern architectures (U-Net / nnU-Net, 3D U-Net, transformer-based and promptable segmentation like SAM), including the geometry that ties voxel- and mesh-level predictions back to a coordinate frame.
• Learning under limited or noisy supervision: self-supervised / semi-supervised methods (masked autoencoders, contrastive pretraining like DINO/SimCLR), active learning, weak labels, and simulation-driven pretraining.
• Hands-on experience with data curation for ML: building datasets from messy, real-world sources, helping to define ground truth, and managing labeling or simulation pipelines (MONAI, ITK / SimpleITK, 3D Slicer).
• Experience with segmentation models for ultrasound imaging, whether on synthetic or real images
• ML for imaging or inverse problems in physics-based domains (CT, MRI, ultrasound, or adjacent), and comfort working alongside reconstruction/signal-processing teams.
• Deploying models in versioned, auditable, high-stakes settings.
• A background in anatomy, medical imaging, or body composition and prior work with existing segmentation models is a plus.

🎁 Benefits

Estimated base salary $237K – $250K

🛂 Visa & Eligibility

No visa or eligibility information provided.