About this role
Senior Ontologist role focused on building and maintaining scalable ETL pipelines and ontology-driven knowledge graphs for Amazon's Knowledge Graph initiatives. Responsibilities span data modeling, mapping to ontological constructs, and enabling semantic grounding across graph systems.
Key Responsibilities
- Build and maintain scalable ETL data pipelines
- Design ontology structures for knowledge domains
- Enable semantic grounding on Knowledge Graph systems
- Record and review Knowledge Graph projects with documentation
- Investigate data gaps and propose solutions
Technical Overview
Stack centers on ETL tools (Pentaho, AWS Glue), programming (Javascript, SQL, SparkSQL, Python), knowledge-graph tooling (Graphiq, Neptune), and ontology automation (ROCK). Includes JSON/Jinja templating, Cypher queries, and dashboarding with Redash/MESA.
Ideal Candidate
The ideal candidate is a senior data/knowledge-graph professional with hands-on experience designing ontologies and scalable ETL/data-pipeline solutions, strong AWS data tooling, and the ability to map data to ontological constructs. They excel at cross-team collaboration, documentation, and maintaining knowledge-graph assets at scale.
Must-Have Skills
experience building and updating data modelsability to design solutions where domain model may be undefinedexperience analyzing large datasetsexperience collaborating with partner teams and stakeholdersexperience presenting production-feasible solutionsexperience driving operational excellence and process improvementsexperience pushing code and participating in design reviewsexperience training new teammates
Nice-to-Have Skills
Knowledge of ontology tooling (ROCK)Experience with Graph knowledge graphsExperience with Change Requests (CRs)Experience monitoring and alerting for data pipelinesExperience using Redash or similar dashboardsExperience with MESA metrics tables
Tools & Platforms
Pentaho Data IntegrationAmazon Knowledge Graph Data LakeAWS GlueGraphiq ImportsNeptune GraphsCypherRedashMESAJinja templatesJSONData Lake S3 Crawler
Required Skills
ETLPentaho Data IntegrationAWS GlueJavascriptSQLSparkSQLPythonGraphiq ImportsData Lake S3 CrawlerLLMsLarge Language ModelsCedric PersonasLLM Batch InferenceROCKRapid Ontology Creation for KEsJSONJinja templatesCypherNeptune GraphsRedashMESA
Hard Skills
ETLPentaho Data IntegrationAmazon Business Data Technologies CradleAWS GlueJavascriptSQLSparkSQLPythonGraphiq ImportsData Lake S3 CrawlerLLMsLarge Language ModelsCedric PersonasLLM Batch InferenceROCKRapid Ontology Creation for KEsJSONJinja templatesmetadataforeign keysexternal keysdata typesCypherNeptune GraphsWikidataIMDbRedashMESAMetric ExtractionStorageand Access
Soft Skills
communicationcollaborationdocumentationtrainingon-call rotationstakeholder collaboration
Keywords for Your Resume
Ontologist IIknowledge graphETLPentaho Data IntegrationAmazon Business Data Technologies CradleAWS GlueGraphiq ImportsData Lake S3 CrawlerJavascriptSQLSparkSQLPythonGraphiq CollectionsKnowledge PanelsNeptune GraphsCypherWikidataIMDbROCKRapid Ontology Creation for KEsLLMsCedric PersonasLLM Batch InferenceJSONJinja templatesCRsontology codebaseRedashMESAMetric ExtractionStorageand AccessontologyGraph database
Deal Breakers
Bachelor's degree in quantitative or analytical field (required), 3+ years total experience building/updating data models, 7+ years experience in enterprise data/analytics environments, Experience with ontology/knowledge-graph design
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