Armin Motahar - Graduate research assistant

Essen, Germany

Experience

Oct 2020 - Dec 2024

4 years 3 months

Essen, Germany

Graduate research assistant

Duisburg-Essen University

Conducted advanced machine learning methods on large-scale inequality datasets for forecasting, clustering and feature importance to assess impacts on growth
Integrated multi-source inequality datasets into a unified panel; applied reproducible preprocessing pipelines including variable harmonization, outlier treatment, normalization, and multiple-imputation methods
Published four papers in international peer-reviewed journals

Apr 2018 - Aug 2019

1 year 5 months

Tehran, Iran, Islamic Republic of

Data scientist

Divar

Built and optimized ad recommendation and search-ranking models to personalize user feeds, increasing CTR by 18% and conversion to contact by 12%
Developed automated A/B testing pipelines to evaluate product and UI changes, enabling the product team to make data-driven rollout decisions to lift customer engagement
Designed BI dashboards and real-time KPI monitoring tools for product managers and executives to track traffic, conversion funnels, and churn, cutting reporting time and improving decision-making speed

Sep 2017 - Feb 2018

6 months

Aschaffenburg, Germany

Business analyst intern

Kion Group AG

Formulated and solved a cost allocation project for the headquarter shared services (R&D, quality, etc) across global branches using activity drivers and game theory methods

Aug 2014 - Jul 2016

2 years

Tehran, Iran, Islamic Republic of

Data analyst

Abkavosh Sarzamin Consulting Engineers

Provided executives and clients with statistical forecasting models and scenario-analysis tools, enabling data-driven planning and improved resource allocation
Delivered holistic, data-driven analyses of key cost and revenue drivers, enabling managers to optimize resource allocation and boost overall profitability by 15% in a year

Summary

Passionate data scientist with an award-winning, machine learning–driven PhD in Economics and an MBA that added strategy to my quantitative toolkit. I turn complex data into clear business decisions that move KPIs.