cv
Jan (Hendrik) Pfrenger · Karlsruhe, Germany
hello@janpfrenger.com · linkedin · github
Experience
Arteus Energy
Feb 2026 – Jun 2026Project Development · Working Student · Karlsruhe
Built automation workflows using Claude Code, n8n, Make, and REST APIs to reduce manual effort in project development and regulatory processes. Worked with structured datasets, technical documentation, and regulatory processes in a dynamic startup environment.
Terra One Climate Solutions
May 2024 – Feb 2026Project Development · Intern → Working Student · Berlin / remote
Independently coordinated nationwide grid connection workflows for utility-scale battery storage, collaborating with 40+ grid operators across Germany. Processed 100+ GW of grid connection applications, including 28+ GW of formal utility feedback and 11+ GW of positive grid confirmations. Used Python, HubSpot, and AutoCAD to structure project data and improve development workflows. One of the first hires during the initial scaling phase of one of Europe's leading BESS startups; work featured in Handelsblatt.
Projects
AI E-Ink Note Taker
Jun 2026AI speech-to-text · E-Ink · embedded
AI-assisted note-taker with an E-Ink display for low-power information capture. Hardware, firmware, and cloud AI services integrated into an end-to-end prototype; syncs notes via Claude, Notion, and Obsidian.
GPS Tracker
Jul 2026ESP32 · GPS · CNC · 3D printing · Python
Real-time GPS tracking system with wireless data transmission and a custom visualization interface. Enclosure designed in Fusion 360, manufactured with 3D printing and CNC machining.
Multi-functional Desk Display
in progressESP32 · REST APIs · OLED
Desktop device showing Spotify status, clock, pomodoro timer, Claude usage, live weather, and air quality on a resource-constrained microcontroller.
Running Pace Robot
in progressRaspberry Pi · Python · machine vision
Robotic pacing assistant that holds predefined and variable running speeds for track training. Motor control, visual sensors, and onboard computing; syncs and evaluates workouts through Claude and the Garmin Health API.
TinyML Vision & Sensor Systems
ongoingEdge Impulse · XIAO ESP32-S3 · embedded ML
Embedded machine learning on the Seeed Studio XIAO ESP32-S3 Sense: image classification, object detection, audio recognition, and motion analysis deployed on-device.
Extracurricular
OpenAI
Jun 2026 – PresentCodex Ambassador Karlsruhe
Represent OpenAI's Codex program in the local builder and startup ecosystem. Engaged 100+ students, founders, and developers through workshops, events, and discussions on AI-assisted engineering.
Young Founders Network e.V.
May 2024 – PresentChapter-Lead Karlsruhe
Founded and grew the Karlsruhe chapter through partnerships with OpenAI, JetBrains, Siemens, Bosch, universities, and ecosystem players. Events, marketing, and a Notion-based ecosystem database.
Eisbaden Karlsruhe
Oct 2024 – PresentOrganizer & Group Lead
Took over organizing and leading the community's cold-plunge events; member growth +320% since involvement. Planning a medical study with students from local universities.
Education
Karlsruhe Institute of Technology (KIT)
Expected May 2027B.Sc. Industrial Engineering & Management
Relevant coursework: Statistics (R), Higher Math, Operations Research, Computer Science (Java).
Burggymnasium Friedberg
Jul 2023Abitur · Chemistry & English · Grade: 1.7
Top of class '23 in chemistry. GDCh Prize for outstanding achievement.
Awards
GDCh Prize for Best Graduate in Chemistry
Jun 2023Gesellschaft Deutscher Chemiker e.V., best high school graduate in chemistry 2023.
Technical Skills
Languages
German (native) · English (C1) · French (B2)