Data Engineer

Warszawa / Zdalniemid

Data EngineerData

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Quick Summary

Key Responsibilities

Building and maintaining a data platform for the public transport industry — designing scalable ELT pipelines in BigQuery using dbt, handling real-time data (GTFS-RT),

Requirements Summary

Must have: Experience with dbt and layered ELT modelling, as well as BigQuery and Google Cloud Platform (Cloud Run, performance tuning) Strong Python skills — async services, data processing,

Technical Tools

Data EngineerData

What you work on today shapes where you’ll be tomorrow.

Looking for your next challenge as a Data Engineer? We may have the right opportunity for you.

At B3, we start with people and their experience. We match projects to your skills and professional growth path. Our consultants work across a wide range of industries and technologies, delivering IT projects both in Poland and internationally. This allows you to build your career in a deliberate way - not by chance.

We are part of an international organization listed on Nasdaq Stockholm, operating in 11 countries. In Poland, we operate with full autonomy. We choose our technologies, processes, and ways of working while maintaining the highest professional standards.

Join us today.

What We Offer

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✓Work in a Scandinavian culture built on logic, trust, and open dialogue.

✓Health and sports benefits tailored to your needs.

✓Speed Coaching – short sessions designed to provide new perspectives and solutions.

✓Sports training, an internal team, and opportunities to take part in competitions.

Building and maintaining a data platform for the public transport industry — designing scalable ELT pipelines in BigQuery using dbt, handling real-time data (GTFS-RT), and ensuring data quality and consistency across multiple transit agencies
Cloud data engineering — managing infrastructure on Google Cloud Platform (Cloud Run, BigQuery), implementing infrastructure as code (Terraform), and configuring multi-region environments
Analytics and data visualisation — building and developing QlikSense dashboards for end customers, processing and validating geospatial transit data, collaborating with the product team and non-technical stakeholders

Requirements

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Requirements

~1 min read

Experience with dbt and layered ELT modelling, as well as BigQuery and Google Cloud Platform (Cloud Run, performance tuning)
Strong Python skills — async services, data processing, API integrations
Familiarity with GTFS static and GTFS Real-time data formats
Experience with Qlik Sense or similar BI tools, and infrastructure as code (Terraform)
Experience with Git / GitHub in collaborative team environments
English - fluent
Ability to perform work in Poland (citizenship, residence card, visa, etc.)

Nice to Have

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Knowledge of incremental load patterns in dbt or similar data pipeline frameworks
Geospatial analytics using BigQuery GIS functions
Background in transit, mobility, or IoT-related data domains