Armin Motahar-Graduate research assistant
Check rate
Experience
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
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
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
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
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Education, Professional Services, Information Technology, Media and Entertainment, Transportation, and Manufacturing.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Research and Development, Business Intelligence, Product Development, and Accounting.
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.
Languages
Education
University of Duisburg-Essen
PhD, A Machine Learning Approach to the Impact of Inequality on Growth · Economics · Essen, Germany
Hochschule Esslingen
MBA, Ways of Cost Allocation at International Matrix Organizations · MBA · Esslingen, Germany
University of Tehran
BSc, Optimization of Parameters in Statistical Models Using Gradient Based Methods · Computational Engineering · Tehran, Iran, Islamic Republic of
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Armin is based in Essen, Germany.
Armin speaks the following languages: German (Advanced), English (Advanced), Persian (Advanced).
Armin has at least 8 years of experience. During this time, Armin has worked in at least 4 different roles and for 4 different companies. The average length of individual experience is 2 years. Note that Armin may not have shared all experience and actually has more experience.
Based on recent experience, Armin would be well-suited for roles such as: Graduate research assistant, Data scientist, Business analyst intern.
Armin's most recent position is Graduate research assistant at Duisburg-Essen University.
In recent years, Armin has worked for Duisburg-Essen University.
Armin is most experienced in industries like Education, Professional Services, and Information Technology. Armin also has some experience in Media and Entertainment, Transportation, and Manufacturing.
Armin is most experienced in business areas like Research and Development, Business Intelligence, and Product Development. Armin also has some experience in Accounting.
Armin has recently worked in industries like Education.
Armin has recently worked in business areas like Research and Development.
Armin holds a Doctorate in Economics from University of Duisburg-Essen, a Master in MBA from Hochschule Esslingen and a Bachelor in Computational Engineering from University of Tehran.
Armin is immediately available full-time for suitable projects.
Daily rate distribution
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The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 6 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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