Data & AI Engineer (m/f/d) 100%

Publication date:06 December 2025
Workload:100%
Contract type:Unlimited employment
Place of work:Rotkreuz

About the job

We are a young publicly traded Swiss and German company in the dynamic telecommunications industry, which has developed from a start-up in 1999 to the Swiss market leader with more than 1,000 employees. The mobilezone group is headquartered in the Suurstoffi area in Risch/Rotkreuz and offers products and services around mobile life – from smartphones to accessories to services and offers for business customers. For more information, visit www.mobilezoneholding.ch.

We are looking for you as:

Data & AI Engineer (m/f/d) 100%
(Focus: Platform Engineering & AI Implementation)

Your opportunity:
Are you an experienced Data Engineer who confidently manages and optimizes complex data landscapes on Azure Databricks? Are you passionate about building high-performance data pipelines with PySpark and developing innovative pro-code AI solutions (e.g., with Langchain and Python)? Then you are exactly right with us! As a Data & AI Engineer in our Data & AI team, you lay the technical foundation for our data strategy. You are responsible for robust data integration, the performance of our Databricks platform, and the implementation of sophisticated AI/ML applications.

Your tasks:

Core Data Platform Engineering & Performance (Azure Databricks, PySpark):
Design, development, and optimization of scalable ingestion and base data pipelines (batch/streaming) with PySpark on Azure Databricks. Ensuring stability and performance up to the Silver Layer.
Data Integration & Base Transformations (dbt):
Robust integration of data from diverse source systems and implementation of core data transformations (harmonization, consolidation up to the Silver Layer or initial Gold Layer) within our medallion architecture, primarily with dbt.
Pro-Code AI/ML Development & Implementation:
Design and development of customized AI/ML solutions (e.g., for anomaly detection, NLP applications) using Python, specialized libraries, and frameworks like Langchain.
MLOps & Operationalization of AI Models:
Implementation and maintenance of MLOps processes for deployment, monitoring, and continuous improvement of AI models (e.g., with MLflow).
Infrastructure Automation & Core DevOps (IaC, CI/CD):
Design and maintenance of our data infrastructure using Infrastructure as Code (Terraform/Bicep) as well as development of CI/CD pipelines for core data and AI workloads.
Technical Conception & Platform Architecture:
Support in the technical conception of complex data projects and significant contribution to the definition and further development of the platform architecture.
Platform Monitoring, Optimization & Cost Management:
Continuous monitoring of system performance, identification of bottlenecks, implementation of optimization measures, and ensuring cost efficiency.

Your profile:

Several years of professional experience (at least 3–5 years) in data engineering, especially in building and operating data platforms in cloud environments (ideally Azure).
Solid knowledge in development with PySpark and experience with Azure Databricks (performance tuning, optimization).
Proven experience in developing and deploying pro-code AI/ML models (Python, common ML libraries, ideally experience with LLMs/Langchain).
Very good SQL skills and experience with dbt for data transformations.
Proficient in using Git, CI/CD processes, and Infrastructure as Code (Terraform/Bicep).
Analytical thinking, systematic problem solving, and high quality standards.
Team-oriented, strong communication skills, and willing to share knowledge.
Fluent German and English skills.

What to expect from us:

A responsible role with plenty of creative freedom in a dynamic environment
Mentoring by experienced colleagues – we actively promote your development
Structured onboarding and individual training opportunities (e.g., Microsoft certifications)
Modern working conditions with flexible working hours and home office options

A collegial, interdisciplinary team with flat hierarchies
An active contribution to the technological future – you work with us on integrating AI solutions based on the Power Platform
Diverse employee events and other activities
and much more...

We look forward to your application including salary expectations, preferably via the application system. For questions, contact Mark Schwarz, Chief Digital & Information Officer, Tel. +41 58 400 24 65.

Apply now via the online application system. For further information about the position, our HR team will be happy to assist you at +41 58 400 24 42 .

Apply now

mobilezone ag, Suurstoffi 22, 6343 Rotkreuz | www.mobilezone.ch