Dennis ThiessenBern, Switzerland

Data · Analytics · AI Engineering

Dennis Thiessen

I build the pipelines and platforms that move data and run models in production.

Staff Data, Analytics & AI Engineer at Swisscom, based in Bern, Switzerland, with 8+ years across data engineering, ML infrastructure and DevOps.

Dennis Thiessen

Profile

I work where software engineering meets operations. I design ETL/ELT and streaming pipelines, containerise ML inference, and turn monolithic data processes into event-driven, serverless systems.

Right now I'm at Swisscom in Bern, moving a legacy Teradata and Oracle stack onto AWS. What I care about most is automation and reliability: systems that run themselves, recover on their own, and don't page anyone at 3 a.m.

Experience

  1. 2023 – PRESENT

    Swisscom

    Bern, CH

    Staff Data, Analytics & AI Engineer

    ETL and streaming pipelines in Python, Kafka and SAP BODS feeding a Teradata warehouse, while migrating the legacy stack onto AWS (Glue, Redshift, Lambda, Step Functions, Airflow).

  2. 2020 – 2023

    Bosch Semiconductor

    Dresden, DE

    Senior Data Engineer

    Containerised ML inference (Docker, Kubernetes, Ansible) into 24/7 semiconductor production lines, and built Python, Java and C# data services over Oracle and Hadoop/Impala.

  3. 2018 – 2020

    Fraunhofer CML

    Hamburg, DE

    Research Software Engineer

    Optimisation-based crew-scheduling decision support in C#/.NET, plus research microservices and a Jenkins CI/CD pipeline with quality gates.

  4. 2017 – 2018

    Vizrt

    Bergen, NO

    DevOps Engineer

    A distributed video-transcoding backend in Python and C++, with automated audio/video integration testing for reliable releases.

  5. 2015 – 2017

    Generali

    Hamburg, DE

    Software Engineer & IT Consultant

    A Java/J2EE workflow portal on Oracle, and introduced behaviour-driven development and RPA automation (UiPath, Camunda).

Stack

Languages

Python · SQL · Java · C# · TypeScript · C++

Data & Pipelines

ETL / ELT · Kafka · Airflow · SAP BODS · Teradata · Hadoop / Impala

Cloud & Infra

AWS · Docker · Kubernetes · Ansible · CI/CD

ML & Observability

PyTorch · scikit-learn · ELK · Grafana · Prometheus

Credentials

M.Eng., UniBw München · AWS Solutions Architect – Associate · iSAQB CPSA-F

Contact

Always happy to talk about data, ML and platform engineering. Email is the fastest way to reach me.

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© 2026 Dennis ThiessenBern, Switzerland