Lead AI Engineer

Descriptif du poste

Full-Time (Permanent Contract)

Location: Paris (Station F)

Salary: Competitive, based on profile and experience + equity

About RainPath

We are shifting from chemical tissue analysis on biopsies to AI-enhanced virtual analysis. This approach is less costly, faster, and, above all, more accurate. It is a revolution that could transform diagnostics worldwide.

To support the development of this technology, RainPath is building a purpose-driven software for pathologists.

We work with large, high-quality datasets and have a reliable data acquisition pipeline through clinical partners. Our focus is twofold: develop a disruptive virtual staining technology, and ship practical software that accelerates workflows and improves pathologists’ day-to-day experience. Several modules are already in production with pilot customers.

RainPath is an ambitious healthtech startup with a strong vision, real-world impact, and a determined team.

The Role

- Design, train, and deploy models for classification, segmentation, virtual staining, and biomarker detection on whole-slide images

- Own data pipelines for curation, preprocessing, tiling, and evaluation, with strong experiment tracking and reproducibility

- Turn research into production services using robust MLOps practices, including containerization, CI, monitoring, and rollback strategies

- Integrate models into the platform in close collaboration with product and fullstack teams, contribute to APIs and service layers when needed

- Validate performance with clinically meaningful metrics, write clear documentation, and contribute to internal technical notes

- Read, reproduce, and adapt state-of-the-art ideas where they add value, in dialogue with external labs and domain experts

- Help debug live systems, reduce latency and cost, and improve reliability and observability over time

- Mentor engineers and interns, set high standards for code quality, testing, and review

Profil recherché

- 4+ years of applied machine learning or computer vision, with a track record of shipping to production

- Strong in Python and deep learning frameworks, with solid engineering skills beyond notebooks

- Comfortable operating across the stack when needed, from data engineering to service integration

- Experience in medical imaging or other high-stakes domains is a strong plus, and you are comfortable with regulated environments and evidence-based validation

- Excellent communication, able to explain technical decisions clearly to engineers, clinicians, and research partners

- Fluent in French and English

Process de recrutement

First video call with the CEO, followed by two technical interviews.

Wrap-up over a coffee in person.

Informations complémentaires

  • Type de contrat : CDI
  • Lieu : Paris
  • Niveau d'études : Bac +5 / Master
  • Expérience : > 3 ans
  • Télétravail ponctuel autorisé