Work & Portfolio
A collection of projects spanning backend systems, AI integration, embedded firmware, and security research.
Open Source Contributor: OpenHands AI Agent & litellm
12 merged pull requests in OpenHands (70k+ stars), the leading open-source AI coding agent. Contributions span Docker containers, runtime stability, frontend UX, build tooling, and LLM metrics. Also contributed token-counter rewrite to litellm (42k+ stars).
Omni-Channel Customer Communication System — troy GmbH
Built the complete outgoing communication system used across troy's client portfolio. Generated pixel-perfect PDFs from Google Docs templates, responsive HTML emails with CSS media queries, and integrated SMS notifications—all handed off to print & mail fulfillment partners.
ESP32 Firmware for DIY Dive Propulsion Vehicle (DPVControl)
Wrote the initial firmware for a DIY underwater propulsion vehicle. Features motor control, Reed switch input, cruise control, boost mode, battery monitoring, leak detection, and safety codes. The project has grown to 20+ releases with a full REST API and web GUI.
ai-shell-loop: AI Agent that Generates & Executes Shell Commands
Built in September 2024 — two months before Claude Code launched. Lets you describe goals in plain English; the tool calls GPT to generate bash commands, executes them, observes results, and iterates until the goal is reached. Published on PyPI with proper packaging.
Responsible Disclosure: LLM Chatbot Data Breach (Medical Sector)
Discovered a critical data privacy vulnerability in an AI-powered customer support chatbot at a regulated medical e-commerce company. The LLM had unrestricted database access exposing customer data. Reported to the company and escalated to Bavarian Data Protection Authority when not properly fixed.
Simplex Nutrition Optimizer — Solo-Founded Web App
Built and launched food-algorithm.de as a solo founder. Applied the Simplex linear programming algorithm to find the cheapest possible diet meeting all nutritional requirements. The system computes personalized targets across 30+ constraints and finds minimum-cost food combinations.
Shoqu — Influencer-Marketer Matching Platform (Co-Founder)
Co-founded a platform connecting social media influencers with marketers for sponsored content deals. Built Instagram API integration allowing influencers to pull posts into their profiles. Featured dual user roles, separate dashboards, booking flow, and analytics.