Technical proficiency
Check hands-on command of RDF/OWL, SHACL shapes, SPARQL or Cypher, and triple stores like GraphDB or Neo4j, plus embedding models and chunking strategies used in retrieval pipelines.
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 specific ontologies authored or extended, writes non-trivial SPARQL from memory, and explains SHACL validation versus OWL inference precisely.