At DAC.digital, we are constantly growing our business. As part of our growth strategy, we are strengthening our strategic partnership with a company specializing in crafting data models, dashboards, and data activation.Key information:Salary: 28 000 - 31 000 PLN net/month - pure B2B contract 24 500 – 27 000  PLN net/month – B2B contract (days off included) It is vital that you have: 4+ years hands-on data engineering / platform experience; strong experience with Spark/PySpark, Kafka or other streaming platforms, cloud-native data lakes or lakehouses (Iceberg, Delta Lake, Hudi, with Iceberg as a plus), dbt or similar transformation frameworks, and advanced SQL including performance tuning; solid Python skills for data pipelines and integration work; familiarity with NLP / LLM-driven text processing workflows (embedding models, classification, enrichment); experience with BI / query engines such as Dremio, Trino, Presto, or BigQuery plus a viz tool (Metabase, Looker, Power BI, etc.); experience deploying data platforms in cloud and/or on-prem environments - Docker, Kubernetes (or equivalent orchestration), CI/CD for data pipelines; understanding of security, networking basics and how to operate inside restricted enterprise environments (no direct internet access, firewall rules, etc.); knowledge of English (min. B2); high communication skills; eager to learn and share knowledge. Nice to have: experience with marketing / growth analytics, CDP, or telco data; background in ML/AI beyond pipelines (e.g. recommendation systems, uplift modelling); prior experience in consulting / client-facing roles; some front-end exposure (Metabase customisation, simple React dashboards) if we want one person to bridge. Technology stack: Python SQL Apache Spark / PySpark Kafka Iceberg Nessie MinIO Kubernetes Helm Charts You will be responsible for supporting our team in: designing, implementing, and maintaining streaming and batch data pipelines using Kafka, Spark/PySpark, Apache Iceberg, and dbt; managing schema evolution, partitioning, performance, and data quality in the Iceberg lakehouse; building and maintaining NLP and enrichment flows; integrating with LangChain and LangGraph-based components to resolve senders to companies, enrich data from public internet sources, and classify companies into brand categories and verticals such as F&B, footwear, and online brokers; supporting experimentation with ML and NLP components, including monitoring and logging; working with Dremio and Metabase to ensure performant queries and dashboards and expose data in a usable ways; handling deployment and operations in constrained environments, including on-prem or behind-firewall deployments at MNOs, containerisation with Docker and Kubernetes, and logging and lightweight monitoring for services and pipelines; ensuring stability, observability, and reproducibility of the platform. What do we offer: possibility to work 100% remotely or on-site at our office in Gdańsk; b2b contract with included 30 days off; private Medical care; group insurance; pre-paid card or Sport Card; referral program; real Agile practices; employee well-being online platform; cafeteria benefits.