Technical proficiency
Check hands-on command of Python (rasterio, GDAL, xarray), Google Earth Engine or ENVI, and specific sensors: Sentinel-1 SAR, Sentinel-2, Landsat, PlanetScope, MODIS.
Evidence to listen for
- Command of the languages, frameworks, and data tools the role actually uses
- Understands correctness, performance, and failure modes, not just syntax
- Has opinions on testing and can justify them
- Reads and reasons about code they did not write
Five-point scoring guide
Cannot work independently; fundamentals are missing.
Weak fundamentals; output needs heavy review.
Competent for the role; needs guidance on complex or unfamiliar work.
Strong practitioner; handles hard problems with little guidance.
Names sensors, bands and resolutions from memory, and describes atmospheric correction, orthorectification and speckle filtering they ran themselves.