T‑Systems is part of the Deutsche Telekom Group, with around 30.000 employees worldwide. We create technology with purpose to generate a positive impact on society. We are looking for curious talent, eager to learn, take on challenges, and contribute ideas that transform our customers’ experience.

We trust people: we offer autonomy, continuous support, and a collaborative environment where you can grow without limits. We are one global team, guided by respect, integrity, and a passion for doing better every day.

Job Description

We are Digital Business (DBIZ), a core part of Deutsche Telekom Technik (DTT), the entity responsible for planning, building, and operating Germany’s wireless and optical networks.

As a catalyst for digital transformation, DBIZ bridges the gap between innovative ideas and technical reality. We provide end-to-end digitization solutions—from initial solution design to full-scale software implementation. Our mission is to drive cultural change and generate synergies across all specialist areas through a consistent, holistic view of the DTT landscape.

To support this mission, we are expanding our Technik Value Stream teams. These teams are the engine of our data-driven strategy, carrying end-to-end responsibility for the data lifecycle on the ODE .

Key focus areas include:

• Data Ingestion: Seamlessly bringing diverse data sources into the ODE.
• Product Development: Building and refining high-impact data products that empower DTT.
• Operations: Ensuring the reliability and excellence of our data products in a live environment.

Task Description:

You will work on data-projects that optimize the planning, building, and operation of our fixed-line and mobile networks. Working within a cross-functional team, with taks in following areas

• Architectural Design & Strategy: Analyze and assess complex requirements to create end-to-end technical designs and architectures. You will lead the product/service development from initial concept to launch across the entire lifecycle.
• GCP Infrastructure Management: Efficiently deploy and manage robust infrastructure on Google Cloud Platform (GCP). This includes designing network architectures (Shared VPC, Hub-and-Spoke), configuring DNS, VPN, Load Balancing, and core services like GKE, Cloud Run, and Compute Engine.
• Automation & CI/CD: Implement and manage infrastructure as code using Terraform . Integrate and optimize GitLab Magenta CI/CD pipelines to automate deployment, testing, and configuration across DEV, TEST, and PROD environments.
• Data Engineering & AI: Design data processing workflows using Hadoop/Hive and PySpark, orchestrated via Airflow/Composer. Handle data integration from various sources (CDI, TARDIS APIs, GCS) and implement AI solutions using Google Vertex AI.
• Security & Compliance: Enforce rigorous security measures, including IAM policies, Secret Manager, firewalls, and Identity-Aware Proxy (IAP).
• Consultancy & Analysis: Act as a strategic consultant for Product Owners and stakeholders. Conduct cost-benefit breakdowns and ensure all technical solutions align with business goals through comprehensive documentation.

Skills Requirements:

• GCP Expertise: Deep proficiency in Google Cloud Platform. Mandatory certification as a GCP Cloud Architect or Data Engineer.
• Technical Stack:
• Infrastructure: Solid knowledge of Terraform.
• Programming: Skilled in Python for application development and automation.
• Data & Orchestration: Proficiency in Hive, PySpark, BigQuery, and Airflow.
• DevOps: Strong experience with GitLab CI/CD and containerization (Kubernetes/GKE).
• Architecture & Design: Proven track record in specifying end-to-end architectures, microservices, and cloud-native solutions. Ability to document concepts using UML.
• Security & Networking: Deep understanding of cloud network security, IAM, and encrypted data management.
• Business Acumen: Experience in technology consulting, stakeholder management, and the application of cost-benefit calculation principles.
• Soft Skills & Mindset:
• Agile mindset with practical experience in Scrum or Kanban.
• A proactive “can-do” mentality with a high degree of self-organization.
• Strong sense of responsibility and willingness to own the technical roadmap.

What do we offer you?

Work environment & flexibility

• International, dynamic and collaborative environment
• T-Social: social initiatives (sports, community, health, …)
• Hybrid work model (remote/on-site)
• Flexible working hours

Growth & development

• Customized training: access to Coursera to learn whatever you want, whenever you want
• Weekly language classes (English & German)
• International Mentoring Sessions & Experience Days

Compensation & benefits

• Flexible compensation plan (health insurance, meal vouchers, childcare, transport)
• Telemedicine
• Life and accident insurance
• Social fund

Wellbeing & time off

• 26+ working days of vacation per year
• Free access to specialist services (medical, legal, wellness)
• 100% salary coverage during medical leave