Image Quality Engineer - Paris - France

Camera Calibration & Image Quality

SkinBit | Full-time On-Site | Paris

About SkinBit

SkinBit is building the next generation of full-body dermatological scanners, combining high-resolution multi-camera imaging, controlled illumination, 3D reconstruction, and advanced algorithmic analysis to enable early skin cancer detection at scale.

We are building a clinical-grade system where optical performance, photometric stability, and image quality directly impact medical outcomes. The scanner is real, the hardware is evolving, and image quality is a core pillar of the product.

We are strengthening our France-based hardware team with a senior optical engineer who will own image quality end-to-end, from raw photon capture to algorithm-ready data.

The Role

You will be responsible for the optical, photometric, and imaging foundations of SkinBit’s scanner platform.

Your mission is to ensure that every image produced by the system is calibrated, stable, measurable, reproducible, and fit for downstream computer vision and clinical use. This role sits at the intersection of optics, lighting, sensors, software pipelines, and real-world constraints.

You will work closely with the CTO and collaborate daily with computer vision, hardware, mechanical, electronics, product, and clinical stakeholders.

This is a hands-on, senior execution role, not a theoretical optics position.

What You’ll Do

Own Camera Optics & Calibration

• Define and implement camera calibration procedures:

  • Intrinsic and extrinsic calibration

  • Optical distortion modeling

  • Focus and depth-of-field characterization

  • Multi-camera alignment and consistency

• Design and maintain automated calibration tooling (targets, rigs, software pipelines)

• Monitor and improve long-term calibration stability, accounting for thermal, mechanical, and optical drift

Design and Optimize Lighting & Photometry

• Design and optimize illumination systems:

  • Light source geometry and placement

  • Uniformity and repeatability

  • Specular reflection management

  • Polarization strategies (crossed, linear, circular)

• Define and enforce photometric protocols:

  • Intensity control

  • Color temperature

  • Reproducibility and stability over time

• Work closely with mechanical and electronics teams to ensure robust integration

Own Image Quality & Photo Pipeline

• Define objective image quality metrics:

  • MTF, SNR, contrast, noise

  • Color accuracy and consistency

  • Inter-camera homogeneity

• Audit and improve the full image pipeline:

  • RAW → ISP → algorithm-ready images

  • White balance and color correction

  • Focus stacking and motion compensation

• Build automated image regression tests to detect quality degradation over time

Cross-Functional Collaboration

• Work closely with:

  • Computer Vision / ML teams (input data quality)

  • Hardware & mechanical teams (tolerances, vibration, thermal behavior)

  • Product & clinical teams (real-world constraints, reproducibility)

• Document technical decisions and contribute to the industrial robustness of the system

You Should Have

Background

• Engineering degree or PhD in:

  • Optics

  • Photonics

  • Imaging

  • Applied Physics

  • Computer Vision with strong hardware exposure

Core Technical Skills

• Geometric and physical optics

• Digital imaging and CMOS sensors

• Multi-view camera calibration

• LED lighting systems, polarization, photometry

• Image quality analysis (MTF, SNR, colorimetry)

• Python and/or C++ for calibration tools and testing

• OpenCV, NumPy, SciPy (or equivalent)

Strongly Valued

• Medical or dermoscopic imaging experience

• 3D reconstruction or photogrammetry

• Focus stacking, HDR, motion compensation

• Industrial or embedded systems experience

• Work on regulated or safety-critical systems

Why Join SkinBit

• Hard technical problems at the core of clinical performance

• Direct impact: your work affects medical image quality and downstream diagnosis

• Senior, interdisciplinary team spanning hardware, vision, and medicine

• Mission-driven: early cancer detection saves lives

• Deep-tech startup environment: demanding, pragmatic, and execution-focused

Logistics

• Location: France (full-time, on-site)

• Employment type: Permanent, full-time (CDI)

• Reporting: CTO

• Level: Senior / Expert (7+ years recommended)

• Compensation: Competitive salary + equity (depending on profile)