Full Stack Developer (all) - React/Python MedTech

About the role

Join us in building a next-generation medical imaging and annotation platform using React, Python, and AI-driven healthcare workflows. As our Full-Stack Developer, you will help shape the transition of our medical annotation tooling from an integrated system into a standalone platform used across multiple products.

What you'll do

• Lead the development of a new web-based annotation platform, built largely from scratch while adopting key functionality from the existing ecosystem.
• Maintain and extend our existing web-based annotation application, including integration of the Cornerstone.js-based medical viewer developed by our Software team.
• Design and implement a Python-based backend for annotation loading, saving, and state management of volumetric 3D imaging data.
• Work with 3D medical images (MRI) and segmentations, ensuring accurate and high-performance rendering in the browser.
• Build advanced annotation and editing tools, such as 3D region growing and brush-based workflows, and optimize platform performance across different hardware setups.
• Collaborate closely with Software, ML, and clinical teams, acting as the technical bridge between engineers, radiologists, and downstream AI workflows.

What you'll need

• 3+ years of professional experience in Full-Stack development, ideally in a startup, SaaS, healthcare, or MedTech environment.
• Strong frontend experience with React or similar frameworks, JavaScript (ES6+), TypeScript, HTML, and CSS.
• Experience with modern UI frameworks and component systems such as Tailwind, shadcn/ui, or similar approaches for high-density interfaces.
• Solid backend experience with Python and frameworks such as FastAPI, Flask, Django, or Litestar.
• Experience building scalable web applications and APIs with a focus on clean architecture, maintainability, and performance.
• Familiarity with Docker, GitLab CI/CD, testing, and modern DevOps workflows.

Nice to have

• Experience with medical imaging libraries such as Cornerstone.js, VTK.js, or ITK.js.
• Familiarity with medical imaging standards and formats such as DICOM or NIfTI.
• Hands-on experience with AWS or similar cloud platforms.
• Understanding of radiology workflows or experience building tools for clinical specialists.

What they offer

• Work remotely or from the office in Berlin-Kreuzberg.
• Personal benefits budget to choose perks that suit you best.
• Highly motivated, interdisciplinary team with fast decision-making processes.