Portrait of Alexander Merdian-Tarko

Alexander Merdian-Tarko

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I'm currently a Data Scientist on a product team at REWE Group where we tackle food waste using ML.

Previously, I worked as a Data Scientist at UNICEF Germany, supporting my colleagues with a wide range of data-related tasks, from data visualizations and exploratory analyses to predictive modeling. I also pursued my own data-driven initiatives to support UNICEF's mission to help children around the world. In addition, I was part of the Data Taskforce and the Green Team.

Climate change, conservation, global health, food security, and education are some of the topics I care about. I'm passionate about using data and machine learning in sustainable and responsible ways to advance these causes.

I did my MSc in Business Administration, Media and Technology Management at the University of Cologne in Germany, focusing on Data Science, Technology Management, and Digital Transformation. I was a member of Enactus and spent a term abroad at the Indian Institute of Management Ahmedabad in India. I worked at the digital consultancy FELD M in Munich as an intern and working student (Digital Analytics) and at the tech start-up Metalshub in Düsseldorf as a working student (Entrepreneurship and Marketing).

I did my BSc in Economics and Business Administration at the University of Tübingen in Germany. During my bachelor's studies, I was a member of our faculty's student council and Market Team. I spent a term abroad at Lomonosov Moscow State University in Russia and another one at Oregon State University in the U.S. I worked at the tech start-up Kreatize in Berlin as an intern and working student (Business Development and Product Management).

Besides, I enjoy learning about astronomy, philosophy, and vegan/regional/seasonal cooking. I'm a member of the public observatory in Cologne. On occasion I like to participate in hackathons with a positive societal impact.

Skills & Tools

Coding: Python, R, SQL
ML: scikit-learn, TensorFlow, Keras, PyTorch, caret
Remote sensing & GIS: Google Earth Engine
Dev tools: Git, Bash, Linux
Soft skills: Teamwork, communication & presentation, data ethics

Projects

Camera traps

TeraiNet: A species classification model focused on the Terai region in Nepal to support Bengal tiger conservation

This project is about building a species classification model for the Terai region in Nepal, using ML, open data, open source tools and free compute resources. The goal is to provide an automated solution for ecologists and NGOs working on Bengal tiger conservation to reduce the manual labor involved in analyzing large volumes of camera trap images. The model is made openly available through AddaxAI.

Camera trap photo of a Bengal tiger with a detection box labelled animal 90%
Credits: LILA BC, MegaDetector, own illustration.

Remote sensing

Classifying land cover in KAZA using remote sensing and ML (with WWF Germany's Space+Science Team)

This project consists of a set of scripts and notebooks for land cover classification in the Kavango-Zambezi Transfrontier Conservation Area (KAZA), using Sentinel-2 and ML. The pipeline trains and optimizes a model locally and performs inference in Google Earth Engine, making the process flexible and efficient. While focused on KAZA, it can be adapted for other regions with suitable labeled data for training.

Land cover map with a legend for bare, built up, cropland, grass, shrub, forest, and wetland

Mapping cropland in KAZA using remote sensing and ML (with WWF Germany's Space+Science Team)

This project aims to monitor agricultural land use in the Kavango-Zambezi Transfrontier Conservation Area (KAZA). The focus is on detecting farm plot locations and tracking their changes over time using Sentinel-2 and ML. The project offers tools for data processing, model training, and visualizations, enabling the detailed mapping of cropland.

Animated satellite imagery of farm plots and a river near Sioma in 2020

Movement ecology

Detecting stationarity in animal movement data using R Shiny (EMAC23 Coding Challenge for MoveApps by Max Planck Institute of Animal Behavior)

The Stationarity Dashboard is an app on MoveApps, designed to track animal behavior over time and identify stationary individuals or anomalies in movement patterns. It provides users with a range of features (summary table, tracker map, and distance plot) and options (individual and date range filters and inputs for stationarity detection) to conveniently analyze their movement data.

Stationarity Dashboard with a summary table, a tracker map, and a distance plot

Analyzing speed in animal movement data using R Shiny

The Speed Dashboard is an app on MoveApps, showing speed-related metrics for individual animals, based on GPS tracking data. It allows users to explore these metrics and set adjustable thresholds (e.g., for the number of observations, distance, and time above threshold) in an interactive way.

App showing animal speed in a table with unit and threshold controls

Publications

Merdian-Tarko, A.V. (2025). TeraiNet: An open-source blueprint for the fast and flexible development of local species classification models. 5th International Workshop on Camera Traps, AI, and Ecology. PDF

Co-author of Kölzsch, A., et al. (2025). Citizen scientists for MoveApps: Innovations and insights from volunteer coders in wildlife conservation. Methods in Ecology and Evolution. DOI

Guest contribution on "Data for Good Causes - An Overview" in Greiner, R., Berger, D., & Böck, M. (2022). Analytics und Artificial Intelligence. Springer Books. DOI

News

2025

2023

2022

2021

2020

2019

2018