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Arian ArifajAA
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Arian Arifaj

@arianarifaj

Analytics engineer at Plan.net who built a Data Vault 2.0 model consolidating six source systems and about 5M events monthly.

Germany
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At Plan.net, I designed and built a Data Vault 2.0 model for an international tyre manufacturer, consolidating six source systems and about five million events per month. I also implemented the server-side collection layer feeding the model.

For a banking client, I developed the Python and FastAPI backend for the internal “Wardrobe Tool,” including fine-tuning HuggingFace models for summarisation and ranking. It made tens of thousands of internal PDFs searchable in natural language, reducing research time from several minutes to a few seconds.

At Ora Solutions, I co-founded and served as CTO of an independent time-tracking product for the Kosovar market. I built its Django backend, PostgreSQL data model, Flutter frontend and NFC check-in system; the product reached six companies with more than 100 employees in total.

My work has also included SQL reporting and a C# reporting service at Coeo Inkasso GmbH, as well as Android app optimisation at Görlitz AG. I hold an M.Sc. in Data Science from FernUniversität Hagen, where my thesis examined Data Vault 2.0 as a unified schema for learning analytics data.

Experience

Work history, roles, and key accomplishments

CG

Working Student, Data & Analytics

Coeo Inkasso GmbH

Feb 2023 - Aug 2023 (6 months)

Developed SQL queries for reporting and Python scripts to move database logic out of the application. Built an internal reporting service in C# for 80 business users, automating report preparation and rollout.

OS

Co-Founder & CTO

Ora Solutions

Jan 2020 - Feb 2023 (3 years 1 month)

Co-founded and led product development of a time-tracking system for the Kosovar market, with full technical ownership from architecture to production. Built and rolled out the system at 6 companies with 100+ employees.

GA

Working Student, Software Development

Görlitz AG

Apr 2019 - Sep 2019 (5 months)

Optimized the Android app 'IDSpecto.local' for mobile meter reading on the Italian market, including UI prototyping.

Education

Degrees, certifications, and relevant coursework

FernUniversität Hagen logoFH

FernUniversität Hagen

Master of Science, Data Science

2022 -

Grade: 2.3

Pursuing a Master of Science in Data Science part-time alongside work, with a thesis on Data Vault 2.0 as a unified schema for learning analytics data.

RWTH Aachen logoRA

RWTH Aachen

Master of Science, Computer Science

2020 - 2021

Enrolled in a Master of Science in Computer Science program before transferring to FernUniversität Hagen.

University of Koblenz-Landau logoUK

University of Koblenz-Landau

Bachelor of Science, Information Systems

2016 - 2019

Completed a Bachelor of Science in Information Systems with a thesis on intrusion detection systems with regard to polymorphic and metamorphic malware.

MA

Martin-Butzer-Gymnasium

Abitur, General Studies

Earned the Abitur, the German university entrance qualification.

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