GCP Data Engineer - Customer Value and Digital Engagement Department

T-Mobile is conducting a data transformation program focused on changing how data is used daily. The role involves working with advanced technologies in Google Cloud Platform to support analytical and business processes, machine learning models, AI applications, and other data-driven solutions within the organization.

• Minimum 2–3 years of experience as a Data Engineer (5+ years and leadership experience for Senior).
• Practical experience with GCP, especially BigQuery (advanced SQL, cost optimization), Cloud Storage, Pub/Sub, Dataflow (Apache Beam) or Dataproc (Spark), and Cloud Composer (Airflow).
• Basic knowledge of GCP security (IAM, KMS, DLP).
• Strong SQL skills (query optimization, aggregations, large datasets).
• Experience programming in Python (pandas, PySpark, automated tests).
• Ability to design data models (Kimball, Data Vault, Dimensional Modeling) and build data layers (raw/bronze, curated/silver, semantic/gold).
• Familiarity with automation tools: Terraform (IaC) and CI/CD (e.g., GitLab CI, Cloud Build).
• Experience ensuring data quality (testing, monitoring, alerting).
• Ability to work with monitoring and diagnostic tools (Cloud Monitoring, Logging).
• Experience creating technical documentation and participating in code reviews.

Nice to have:

• Google certifications (e.g., Google Professional Data Engineer, Associate Cloud Engineer).
• Experience with data management tools such as dbt, Dataform, Dataplex, Data Catalog.
• Teamwork and communication skills with business, technical, and analytical teams.
• Proactivity, responsibility, and quality focus in data area.
• English language proficiency at minimum B2 level.

• Design, develop, and maintain ETL/ELT data pipelines in GCP.
• Integrate data from various sources (APIs, databases, files) into BigQuery and Cloud Storage.
• Design and optimize data models in data warehouses (Kimball, Data Vault, Dimensional Modeling).
• Implement streaming solutions using Pub/Sub, Dataflow, and Apache Beam.
• Automate data processes using Cloud Composer (Airflow).
• Ensure data performance, quality, security, and scalability.
• Collaborate with data analytics, data science, and business teams.
• Create technical documentation and participate in code reviews.
• Monitor and resolve performance issues and optimize cloud costs.
• For Senior role: lead a micro-team (2–4 people), plan work/sprints, prioritize backlog, facilitate business workshops, translate requirements into solutions and SLA/SLO.

Data controller is T-Mobile Polska S.A. located in Warsaw, ul. Marynarska 12. Personal data will be processed for recruitment purposes. Providing data required by labor law is mandatory; other data is voluntary. Candidates have rights to access, correct, delete, restrict processing, object, data portability, and complaint. Data will be processed until recruitment ends and for potential claims. Consent for future recruitment can be withdrawn anytime. Data recipients include Rocket Jobs and other entities processing recruitment data.