Open Roles
Build Clinical Radiation Planning Software with the Physicists Who Use It
Airato works at the intersection of clinical physics, machine learning, and Japan medical device regulation. We hire for deep domain knowledge and the discipline to build methodically — clinical software has to be correct before it can be fast.
What We Hire For
Domain depth before breadth
We prefer specialists who understand the clinical physics problem deeply. The product serves medical physicists making dosimetric decisions under scheduling pressure — building for that context requires people who understand the specific difficulty, not people who learn as they go.
Safety-first engineering instinct
Software for clinical use operates under different standards than consumer software. We look for engineers who default to caution, document assumptions, and flag uncertainty rather than ship confidently past it.
Fluency in clinical context
Working with radiation oncology departments in Japan requires cultural fluency, professional Japanese communication, and genuine respect for the clinical environment and its constraints. The physicist's time is limited and her attention matters — interactions with Airato should reduce her workload, not add to it.
Current Openings
All roles are based in Sendai, Miyagi, Japan. Hybrid arrangement available for non-clinical roles.
Medical Physicist — Clinical Validation
Lead clinical validation studies for Airato's IMRT planning engine. Design and execute retrospective plan comparison protocols, develop DVH constraint libraries for site-specific treatment programs, and represent Airato at clinical evaluation sites. Requires medical physics background (JBMP or equivalent preferred) and hands-on TPS experience.
ML Research Engineer — Dose Optimization
Research and implement improvements to Airato's dose optimization models. Work with clinical physics team to translate DVH constraint requirements into ML training objectives. Characterize model performance using dosimetric metrics (D95, V20, conformality index). Strong mathematical background in optimization required; clinical knowledge a plus.
Clinical Affairs Manager
Manage Airato's PMDA regulatory pathway progression, quality management system documentation, and clinical site onboarding for evaluation departments. Coordinate with clinical physics advisors and provide regulatory documentation for clinical evaluation agreements. Background in Japan medical device regulatory affairs required.
Software Engineer — Clinical Infrastructure
Build and maintain Airato's clinical deployment infrastructure: DICOM integration layer, API services, and institutional deployment tooling. Contribute to IEC 62304-aligned software documentation and testing. Experience with medical device software standards or clinical network infrastructure is valued.
How We Hire
Initial application
Send a brief introduction and your background via our contact form. We read every application; we don't use automated screening.
Technical conversation
A focused discussion with the relevant team lead. For clinical physics roles, we discuss actual clinical cases. For engineering roles, we discuss technical architecture and design decisions.
Practical review
A structured exercise relevant to the role — a clinical validation protocol design, a technical problem, or a regulatory pathway analysis. Always paid; takes 2-4 hours.
Team meeting
Meet the broader Airato team. We walk through how we work, the regulatory and clinical milestones ahead, and what the day-to-day of building medical planning software in Japan actually involves.
Interested in joining?
Introduce yourself and mention which role you're interested in. We'll follow up within 5 business days.