T Hub - Data Engineer (Microsoft Fabric) w Warszawa, Polska

Expected, Microsoft Azure, Python, SQL, PyTorch

Optional, Apache Spark

Operating system, Windows, Linux

About the project, In this role, you will design, implement, and maintain ingestion, transformation, and data quality workflows for SIM lifecycle, usage, network, and partner connectivity data from multiple source systems and regions. You will modernize and transition data pipelines from legacy systems such as Oracle and SAP into Microsoft Fabric, integrate external Connectivity Management Platforms (CMPs), and provide reliable, analytics-ready datasets for internal teams and partner-facing use cases. The role is focused on practical data pipeline engineering, automation, monitoring, and operational reliability.

Your responsibilities, Build and maintain scalable data pipelines in Microsoft Fabric, including Lakehouse, Pipelines, Notebooks, Delta Lake, and Medallion Architecture, to process global IoT SIM data efficiently and reliably., Develop robust ingestion and transformation workflows for Oracle, SAP, CSV, CDC, APIs, and CMP sources, structuring data through Medallion Architecture (Bronze/Silver/Gold) and reusable data models., Implement data quality checks, validation rules, monitoring, and automated error handling to ensure trusted datasets for reporting, analytics, and operational use cases., Collaborate with architects, product owners, analysts, development, QA, and DevOps teams to industrialize data products, establish CI/CD practices, and support operational run models.

Strong hands-on experience with Microsoft Fabric or comparable Azure data engineering platforms, including Lakehouse patterns, Delta Lake, data pipelines, and notebook-based transformations., Advanced Python, SQL, and PySpark skills for large-scale data ingestion, transformation, migration, and optimization of IoT SIM, lifecycle, usage, and network telemetry data., Experience with Medallion Architecture (Bronze/Silver/Gold), data modeling for analytical workloads, partitioning, performance tuning, and preparation of reliable datasets for downstream consumption., Practical experience with data quality frameworks, orchestration, monitoring, Git-based development, CI/CD, and production-grade data operations.

Optional, Hands-on experience with real-time or near-real-time streaming concepts, such as Apache Kafka, Fabric Eventstream, Event Hubs, or similar technologies., Background in Data Governance, Microsoft Purview, CMP integrations, telecommunications data models, secure data engineering patterns, or legacy SAP/Oracle modernization., Experience with Power BI semantic models, Direct Lake, self-service analytics enablement, or controlled access concepts such as Entra ID, OAuth2, Azure Key Vault, Private Endpoints, and Data Gateways., Certifications: DP-600, DP-203, or AZ-305.

What we offer, Employment contract, Additional day off on the occasion of birthdays/namedays, Medical package and life insurance, Benefit platform - you choose what you benefit from, Access to training platforms to improve your knowledge, I know Talent - training or money for referring friends to work !, Besides, with us you can count on access to our products and services at preferential terms and benefits, which you will read about below

Benefits, sharing the costs of sports activities, private medical care, sharing the costs of foreign language classes, sharing the costs of professional training & courses, life insurance, flexible working time, corporate products and services at discounted prices, integration events, mobile phone available for private use, no dress code, parking space for employees, extra social benefits, sharing the costs of tickets to the movies, theater, holiday funds, birthday celebration, sharing the costs of a streaming platform subscription, employee referral program, charity initiatives, extra leave, Benefit Platform

Recruitment stages, Let’s meet to better understand each other's expectations., Hiring Manager will receive your application after meeting., Technical meetings with the Hiring Manager and/or team., Time to decide!

T-Mobile, Working at T-Mobile’s T Hub will offer you an unique and highly rewarding experience on IT market. As a leader in the telecommunications industry, T-Mobile not only provides a platform to hone your technical skills but also empowers you to be a catalyst for innovation. You'll have the opportunity to work at the forefront of cutting-edge technologies, from 5G to IoT and AI, shaping the future of connectivity. Our commitment to fostering a diverse and inclusive workplace means you'll collaborate with a wide range of talented professionals, learning and growing together. T-Mobile encourages a culture of continuous learning and development, offering mentorship and support to help you thrive in your career.

This is how we work,