Jonathan Wrede
Data & AI Solution Engineer, Münster, Germany
I build data platforms and machine learning systems and put them into production. Since 2027 I have been a Data & AI Solution Engineer at Possehl Digital Services, delivering data and AI projects for companies of the Possehl Group. Before that I was the sole developer of a battery analytics platform for more than 100,000 IoT thermostats at vilisto and a cloud data warehouse consultant at synvert (formerly Saracus).
Work and education
- since 2027 Data & AI Solution Engineer, Possehl Digital Services
Data and AI projects for companies of the Possehl Group.
- 2025 to 2026 Machine Learning Engineer, vilisto
Battery analytics platform for more than 100,000 thermostats at about 400 customer sites, from the estimation library to the view in the company dashboard. Analytics warehouse with dbt and Dagster, fleet monitoring with Grafana and Prometheus on Kubernetes.
- 2023 to 2024 Data Platform Consultant, synvert (formerly Saracus)
Cloud data warehouses on Snowflake, BigQuery and Azure Synapse for five clients in insurance, e-commerce and energy.
- 2021 to 2022 Working student, data science, vilisto
Presence detection models with scikit-learn, data pipelines on PostgreSQL and TimescaleDB.
- until 2026 M.Sc. Computer Science, University of Münster
Master's thesis on the memory footprint of cryptographically secured transformer computation.
Projects
- Battery analytics platform
Battery capacity and runtime estimation for an IoT fleet, built and operated as the sole developer.
- Data platform with dbt, Dagster and ArgoCD
Analytics warehouse separate from the production database, with tested dbt models and deployment through ArgoCD.
- Master's thesis: reducing peak memory
Memory use of cryptographically secured transformer computation, measured and reduced one step at a time. Harness and raw data are public.
- tokentoll
Shows in code review how changes to LLM API calls change the cost.
- battery-passport-kit
Checks data for the EU battery passport against the BatteryPass-Ready data model.
- Anki-KaTeX-Markdown
Anki note types with Markdown and KaTeX, since 2021.
Also small command-line tools for Docker, Git, systemd and GitHub Actions, each with an article on the blog.
Open Source
15+ merged pull requests across llm-d, OpenTelemetry and Feast, mostly CI, tests, observability and bug fixes. List on GitHub
Recent articles
- 13 Nov 2026
- 12 Nov 2026
- 11 Nov 2026
- 10 Nov 2026
- 9 Nov 2026
- 9 Nov 2026