Senior Data Engineer
Posted Updated
Summary
Recruited via Verita HR for a fintech/banking client: a Senior Data Engineer in Kraków (hybrid) who designs and runs end-to-end data pipelines and builds SQL, graph/knowledge-graph and NoSQL data models. Requires ~5 years' experience with Python, SQL and CI/CD; B2B contract pays 28.4–30.5k PLN net/month.
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
- 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
Kim jesteśmy?
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