Vasilis Liapas

Available to hire

AI Engineer and Data Scientist with two years of hands-on experience in developing AI solutions, specializing in Large Language Models, API transformation, and scalable data pipelines.

About

AI Engineer and Data Scientist with two years of hands-on experience in developing AI solutions, specializing in Large Language Models, API transformation, and scalable data pipelines. Skilled in Python, SQL, and advanced data analysis techniques, with a track record of solving complex business challenges and driving innovation in digital projects. Passionate about new GenAI developments and committed to collaboration and continuous learning.

  • 3 years' experience
  • Joined October 2025

Languages

  • Greek, ModernFluent
  • EnglishFluent

Industry experience

  • Software & Internet
  • Financial Services
  • Professional Services

Work experience

AI Engineer · EYJun 2023 – Present · 3 yrs 6 mos

-Modernized legacy banking APIs (WSDL, XSD, XML, C#, Java) by converting them to OpenAPI. Identified system dependencies, enhanced documentation and applied AI-based similarity to highlight redundancies, enabling data-driven decommissioning decisions. -Acted as a technical bridge between the AI and Digital Engineering teams, guiding on the architectural decisions on API transcoding logic, GenAI integration, and Python implementation strategy. -Developed a RAG application that managed contracts between businesses, enabling efficient retrieval of relevant information and supporting advanced search and analysis capabilities. -Modified, obfuscated and deployed a Python tool for a major insurance company, making it compatible with their systems and databases. Set up scheduled scripts to run automatically in their secure environment. -Automated the testing of small LLMs on selected datasets and conducted analysis and comparison of experimental results with quantized Large Language Models. -Developed a synthetic time series dataset for the experimentation of pretrained and traditional machine learning models. Developed the visualization on the time series forecasting experiment results. Supported in the implementation of a Risk Analysis Pipeline. -Contributed on the development of an environment for data lineage analysis in IICS data flows.

Education

BSc in Physics · Aristotle University of Thessaloniki2030 – 2025

Certifications and awards

Certified Generative AI Engineer Associate2025
Regeneration Academy on Data Engineering2023 – 2025

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