Senior Data Engineer / Architect (AWS) w Warszawa, Polska

Expected, Apache Iceberg, DBT, AWS, Airflow, dltHub, Infrastructure as a Code

About the project, Ready to reshape a data platform from the ground up? Join Us!, , You won't be locked into one project. Our projects range from greenfield builds to re-architecting existing platforms, from small two-week engagements to multi-year deliveries, across several industries. Some weeks you design a data lake from scratch, other weeks you migrate an orchestration layer or tune a warehouse. What stays constant is ownership: we work in a "we build it, we run it" model, so every engineer deploys their own solutions to production without handing off to anyone else., , The stack you'll work with, We pick tools per project, but this is the technology you'll typically touch:, •Data Warehouse / Data Lakehouse architectures on AWS alongside streaming and batch pipelines,, •Apache Iceberg as the open table format,, •Data Warehouses and query engines: DuckDB, Amazon Redshift, Amazon Athena, Amazon S3 Tables, Snowflake, ClickHouse, and other AWS-native data services,, •Airflow (AWS MWAA) and AWS Step Functions for orchestration,, •Apache Kafka and Amazon Kinesis for streaming, Debezium for CDC,, •dltHub for ingestion, dbt with Cosmos (ELT) or Apache Spark (ETL) for data transformations,, •Amazon ECS for running application workloads,, •OpenMetadata for metadata and data lineage,, •Terraform for infrastructure as code.

This is how we work, at the client's site, you develop several projects simultaneously, you have influence on the choice of tools and technologies, you have influence on the technological solutions applied

Your responsibilities, Design, implement and maintain Data Lakehouse and Warehouse architectures on AWS,, Build and maintain ELT pipelines using dbt, dltHub, and Airflow,, Design orchestration and migrate between orchestration layers when needed,, Ensure data quality, observability, and lineage across the platform,, Deploy your own solutions to production, no handoffs, full ownership,, Collaborate with a small engineering team and contribute to technical decisions.

5+ years in data engineering with production-grade delivery,, Hands-on experience with dbt and at least one modern orchestration tool (Airflow preferred),, Solid Python skills and experience building and operating data pipelines,, Familiarity with data lake / data lakehouse concepts (Apache Iceberg) and batch/streaming architectures,, Experience with at least one modern warehouse or query engine,, Comfort with Infrastructure as Code (Terraform or similar),, High agency: you get a goal, not a step-by-step list, and you organize your own work to deliver it. You don't wait to be told what to do next,, Fluency in both English (C1) and Polish (C1), written and spoken.

Optional, Current experience in the healthcare industry will be a big plus, or a willingness to grow in this specialization. We build platforms for hospitals and research institutions, based on the HL7 FHIR and OMOP CDM data models. If you are curious to explore it and deep dive into it, that is enough to start.

What we offer, B2B contract 23 000-29 000 PLN net,, Continuous learning and growth – we invest in your development through internal training, knowledge-sharing sessions, and hands-on learning from real projects. We also support growth beyond the organization by actively engaging in the AWS Community, including conference talks and industry events., Training budget – dedicated funds to support certifications, courses, and professional development aligned with your career goals., Medical care package – comprehensive private healthcare to help you stay healthy and focused., Multisport card co-financing – because staying active matters, both in and outside of work., Language learning platform access – improve your language skills at your own pace, whenever it suits you., Flexible working hours & remote work – work when and where you’re most productive., Company events – time for integration and some fun.

Development opportunities we offer, conferences abroad, conferences in Poland, development budget, external training, intracompany training, mentoring, support of IT events, technical knowledge exchange within the company

Benefits, sharing the costs of sports activities, private medical care, sharing the costs of foreign language classes, sharing the costs of professional training & courses, remote work opportunities, flexible working time, integration events, no dress code, extra leave

Chaos Gears S.A., As a leading AWS Partner in Europe, we support organizations at every stage of their cloud journey. Our strength comes from deep experience in cloud-native architectures. By joining our team, you'll have the opportunity to design and build scalable data platforms on AWS, work hands-on with modern data stack technologies, and directly shape how businesses in regulated industries process, store, and make sense of their data.

This is how we work,