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George Kordonis

@georgekordonis

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Senior Data Engineer leading ETL and migrations in fintech, optimizing SQL pipelines.

Greece

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What I'm looking for

I’m looking for a Senior Data Engineer role in fintech where I can lead ETL and data migrations, optimize SQL pipelines, and work cross-functionally—bringing strong delivery ownership, mentoring, and practical BA/QA context into production outcomes.

I’m a Senior Data Engineer with 9+ years of experience across data migration, ETL development, business analysis, and product delivery—especially in financial services and fintech. I focus on designing reliable pipelines, mapping data carefully, and delivering migrations that stand up to real-world constraints.

At Qualco, I serve as a Team lead and the primary technical contact for design decisions, code reviews, and mentoring while working within a 40-person project delivery department. I’ve led major client migrations (including multi-country portfolios), contributed to 7+ full-cycle client migrations, and optimized critical SQL pipelines—reducing migration runtimes from several hours to minutes.

Before that, I combined BA/QA delivery with technical execution at Edenred, where I drove MyEdenred mobile app delivery (iOS & Android) and supported major payment initiatives like Apple Pay and Google Pay. I also built ETL pipelines for stakeholder-facing reporting (SSRS/SSIS) and earlier administered IT infrastructure while developing internal SQL, C#, and Python tooling to automate in-department processes.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Engineer

Current

Qualco Group

Mar 2022 - Present (4 years 4 months)

Senior Data Engineer and team lead responsible for ETL development and complex data migrations for credit/debt management clients, including primary technical ownership for design decisions, code reviews, and mentoring. Delivered full-cycle client migrations and optimized T-SQL pipelines to reduce migration runtimes from hours to minutes.

ETL Data Migration Data Mapping T SQL SQL Server SSIS Unit Testing XML JSON Python Stakeholder Management Technical Documentation Mentorship

IT Business Analyst

Edenred S.A.

Jan 2018 - Feb 2022 (4 years 1 month)

IT Business Analyst serving as BA/QA and de-facto project manager for major digital product initiatives, including Greek-side delivery of the MyEdenred mobile app and payment feature implementations. Contributed to ETL pipeline development for partner merchant data, coordinated integrations, and supported reporting via SSRS/SSIS.

Business Analysis Project Coordination iOS Android Google Pay Mastercard ETL SQL SSIS Payment Integration Stakeholder Management Release Coordination Technical Documentation QA

IT Specialist

FF Group Tool Industries S.A.

May 2016 - Jan 2018 (1 year 8 months)

IT Specialist administering company IT infrastructure and supporting end-user systems. Developed internal automation tooling using SQL, C#, and Python, and managed hardware/software evaluation and procurement with vendor relationships.

Windows Server ERP Administration WMS IT Infrastructure Administration SQL C#Python Vendor Management Hardware Procurement Software Procurement

Education

Degrees, certifications, and relevant coursework

ATHENA RC / NKUA

Master of Science, Language Technology

M.Sc. Language Technology program with a thesis on emergent communication in AI agent systems.

Piraeus University of Applied Sciences

Bachelor of Science, Computer Systems Engineering

B.Sc. in Computer Systems Engineering, including hands-on development work relevant to building and optimising SQL/ETL scripts for the financial debt portfolio data lifecycle.