Working @ Amazon

Education @ RWTH Aachen

TEN Enigma @ Amazon

November 2021 - now

Role: Senior Software Development Engineer

since October 2024: spearheading a taskforce to optimize product titles (shortening & removing duplicated phrases) while ensuring no loss of searchability. - Project is in ideation phase

Leading the design and implementation of an SEO tool using LLMs to augment product content. The tool uses existing search information to identify product niches to reduce competition for products. Scaled the system to 1M products analzyed per day. Main challenges were to integration of LLMs as slow, expensive and probabilistic components - reduced costs by proposing and implementing pre-filters and scaled the LLM throughput 18x through parallelization. The project led to >7M augmented product titles between June and October 2024 with an average search impression increase of 56% covering 3P products on Amazon stores worldwide.

Leading the design and implementation of the Enigma system extracting search insights into catalog actions (creating new products in stores, identifying product search defects). Scaled the system to 12M+ search queries & 30M+ products / week; generating ~10M USD incremental revenue worldwide / week

TEN Search Matching @ Amazon

January 2021 - November 2021

Role: Software Development Engineer II

Drove the development of an analysis tool to quantify indexing gaps and the impact of individual attributes in search.

Simplified the indexing logic for several attributes to be included by default for new store launches, resulting in higher search result relevance, increased sales, saving ~2 SDE weeks / marketplace launch.

A shortlist of my personal coding projects:

Bike Sensors - Bluetooth Low Energy

Technologies: Golang, Bluetooth Low Energy Definitions, Javascript, Websockets

Integrating Bike Speed and Cadence Sensors by reading their values via Bluetooth Low Energy (BLE). Displaying the speed, cadence and calculated power output in real-time in a WebApp.

Github repo

Portfolio Tracker

Technologies: Python (Pandas & Streamlit), Cron

Simple Portfolio tracker as my broker does not offer an overview of the portfolio development over time. Retrieve asset prices (daily Cron job) & display total values.

Github repo

Plant Database Retrieval

Technologies: Python, Langchain, FAISS, LLM Text Embeddings

Building a plant retrieval system. The plant data is retrieved from Wikipedia, transformed into a dense-vector representation using the MiniLM-L12 LLM and stores in a FAISS vector-store for semantic similarity retrieval.

Jupyter Notebook

Virtual Meetings

Technologies: Golang, Socket IO, Typescript/ReactJS

(In-progress) Evaluating and implementing a real-time virtual meeting system: meeting as avatars in a 2D map, where you can interact with other users and objects in the meeting room.

Github repo

Generate your own Book

Technologies: Python, GPT-3.5, GPT-4, Dall-E 2, Typescript/ReactJS

Generate your own book after providing content detail. The GPT4 and GPT-3.5 LLMs write the text and Dall-E 2 creates illustrations matching the text. Supports 2 languages (German and English). Main challenges: how to ensure the LLM generates age-appropriate content and how to steer the Dall-E 2 model to generate consistent, relevant images: prompt engineering

Project Homepage

Kafka Event Streams

Technologies: Apache Kafka, Telegram Bots, Python, Golang, Typescript/NodeJS, YOLO object detection

Distributed monitoring system: sensors, monitors and actors. Sensors include reading temperature sensors, presence sensors, webcams. Monitors include person detection using YOLO. Actors include Telegram Bots to send alert notifications.

Github repo

Interested in knowing more?

In case you would like to know more about my previous projects, have a question on career development at Amazon, then drop a message via LinkedIn or my Instagram Profile. Alternatively you can check out my Github repositories for project documentation