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Theodoros LoukisTL
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Theodoros Loukis

@theodorosloukis

Senior Data Platform Engineer at Flatpay who developed data pipelines and a lead generation application.

Denmark
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At Flatpay, I developed and maintained a Bronze, Silver, and Gold data architecture using Python, PySpark, and dbt. I also engineered ETL pipelines for financial transactions, telephony, onboarding, and HR data.

I spearheaded the development and project management of an in-house lead generation application that combines Google Maps API data with internal customer and call logs. Earlier, I contributed to data engineering and infrastructure work at Copenhagen Energy Trading and developed banking applications at Eurobank.

Experience

Work history, roles, and key accomplishments

Flatpay logoFL
Current

Senior Data Platform Engineer

Jan 2026 - Present (9 months)

Worked as Senior Data Platform Engineer at Flatpay.

Flatpay logoFL

Data Platform Engineer

Apr 2025 - Dec 2025 (8 months)

Data Architecture: Developed and maintained a Medallion Architecture (Bronze, Silver, Gold) using Python and PySpark for raw data ingestion and transformation, utilizing dbt for final gold-layer modeling.

Pipeline Management: Engineered robust ETL pipelines for diverse data domains, including Financial Transactions, Telephony (Calls), User Onboarding, and HR data.

Product Leadership: Spearheaded

Copenhagen Energy Trading logoCT

Data Engineer

Mar 2023 - Mar 2025 (2 years)

As a Student Developer at CET, I am responsible for contributing to critical technological decisions, designing and implementing scalable data solutions, and producing high-quality software with a strong emphasis on delivering tangible value. My role involves working across multiple areas of the technology stack, including data engineering, front-end development, infrastructure management, and leg

Metsystem logoME

Thesis Work

Sep 2024 - Feb 2025 (5 months)

Working on my master's thesis in collaboration with Metsystem and DTU, focusing on developing advanced deep neural networks for cancer cell detection and segmentation.

My research combines confocal and brightfield microscopy data to enhance 3D image analysis, integrating spatial and temporal dimensions to improve segmentation accuracy.

Additionally, I am designing robust data pipelines that stre

DTU - Technical University of Denmark logoDD

Teaching Assistant

Jan 2024 - May 2024 (4 months)

Assisting in course preparation (Introduction to Artificial Intelligence) and material development. Providing support and feedback during exercise hours. Evaluating assignments, and programming projects ensuring
fairness. Coordinating course logistics with faculty and TAs.

Eurobank logoEU

Software Developer

Sep 2021 - Aug 2022 (11 months)

In my role as a Software Developer and Engineer within the Core Banking Platforms Division, I was responsible for developing and maintaining applications related to amortized loan products. My contributions involved a combination of software development, database management, and working with IBM frameworks to ensure the reliable delivery of core banking services. Key responsibilities included:

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Education

Degrees, certifications, and relevant coursework

DD

DTU - Technical University of Denmark

Master of Science - MS, Computer Science

2022 - 2025

Masters in Computer Science and Engineering
Thesis: Combining Confocal and Bright-field microscopy for enhanced cancer cell image analysis
12/12

EA

Ethnikon kai Kapodistriakon Panepistimion Athinon

Informatics and Telecommunications, Computer Science

2015 - 2020

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