Senior Data Architect (m/f/d)

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