Senior Data Engineer

Czym będziesz się zajmować?

• Design, build and run end-to-end pipelines covering ingestion, extraction, transformation, enrichment, validation and publication
• Develop reusable connectors and processing components for structured and unstructured sources (APIs and other interfaces)
• Build reliable pipelines with idempotent writes, deduplication, retries, replay, backfills and recovery from partial failures
• Design incremental and full-load patterns suited to each source’s volume and change behaviour
• Develop SQL data models and transformations, with a focus on integrity and query performance
• Design graph schemas and translate ontology concepts into implementable models, mapping source data to the knowledge graph
• Build graph loading and query patterns that preserve identifiers, relationships, provenance and lineage
• Design NoSQL models around access patterns, and integrate relational, graph and NoSQL stores

Kogo poszukujemy?

• Proven experience as a Senior Data Engineer delivering production-grade data pipelines
• Strong SQL skills: complex transformations, relational modelling, query-plan analysis and optimisation
• Hands-on experience with graph databases and knowledge graphs, including ontology and entity/relationship modelling
• Practical experience designing NoSQL data models (partitioning, indexing, consistency trade-offs)
• Strong Python skills (or equivalent) for orchestration, transformation and testing
• Experience building reusable pipeline frameworks across multiple sources or domains
• Good understanding of batch and event-driven processing, incremental loads, idempotency and backfill strategies
• Experience with structured and unstructured data, including document content and metadata
• Solid knowledge of data quality, schema evolution, lineage and data lifecycle management
• Experience with cloud data services, orchestration tools, CI/CD and monitoring
• Clear communication and experience working across engineering, architecture and business teams

Czego wymagamy?

5 lat doświadczenia na podobnym stanowisku

Znajomości

• Python
• SQL
• CI/CD

Języki

• Polski
• Angielski

Jakie warunki i benefity otrzymasz?

• 28.4k-30.5k PLN netto/m (B2B)
• B2B - Elastyczne godziny pracy (100%)
• Praca zdalna: Hybrydowo
• Pakiet medyczny, Pakiet sportowy
• Kawa / Herbata, Zimne napoje
• Parking, Parking rowerowy, Pokój relaksu

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