cv

Jan (Hendrik) Pfrenger · Karlsruhe, Germany

hello@janpfrenger.com · linkedin · github

Experience

Arteus Energy

Feb 2026 – Jun 2026

Project 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 2026

Project 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 2026

AI 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 2026

ESP32 · 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 progress

ESP32 · 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 progress

Raspberry 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

ongoing

Edge 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 – Present

Codex 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 – Present

Chapter-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 – Present

Organizer & 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 2027

B.Sc. Industrial Engineering & Management

Relevant coursework: Statistics (R), Higher Math, Operations Research, Computer Science (Java).

Burggymnasium Friedberg

Jul 2023

Abitur · 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 2023

Gesellschaft Deutscher Chemiker e.V., best high school graduate in chemistry 2023.

Technical Skills

Python Java C/C++ R TypeScript Git Linux Docker REST APIs ESP32 Raspberry Pi Edge Impulse Claude Code n8n Fusion 360 AutoCAD 3D Printing CNC Machining

Languages

German (native) · English (C1) · French (B2)