Lefteris Kazantsidis

Generative AI Practitioner – Personal Projects

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Thessaloniki, Greece

Experience

Jan 2024 - Present
2 years 1 month
Thessaloniki, Greece

Generative AI Practitioner – Personal Projects

Self-Directed Work

  • Developed multiple hands-on projects involving prompt engineering, model evaluation, and structured correction of LLM outputs, with focus on technical/physics-related reasoning tasks.
  • Designed complex prompts aimed at stress-testing large language models, including multi-step physics problems, conceptual explanations, and error-inducing queries to observe failure modes.
  • Built systematic evaluation frameworks (rubrics, scoring criteria, accuracy checks) to assess completeness, coherence, and scientific correctness of AI-generated answers.
  • Performed iterative refinement of model outputs using domain knowledge in physics, identifying reasoning gaps and adjusting prompts to improve model performance.
  • Explored different LLM platforms and configurations to compare model behavior, strengths, and weaknesses across tasks involving critical thinking and physics problem-solving.
Jan 2023 - Present
3 years 1 month
Thessaloniki, Greece

Physics Instructor (Middle & High School)

Freelance / Private Tutoring

  • Taught physics to students of different academic levels, adapting material to individual needs.
  • Created structured problem sets, solution guides, and conceptual summaries.
  • Trained students to identify reasoning gaps and justify their answers—directly relevant to evaluating AI reasoning.
  • Provided detailed feedback and corrections, mirroring the workflow of reviewing AI-generated responses.

Skills

  • Physics
  • Problem Solving
  • Quantum Mechanics
  • Electromagnetism
  • Statistical Mechanics
  • Analytical Thinking
  • Prompt Engineering
  • Model Evaluation
  • Ai Reasoning Checks
  • Error Analysis
  • Teaching
  • Adaptability
  • Management Skills
  • Creativity
  • Negotiation
  • Critical Thinking
  • Leadership
  • Software Proficiency (Power Point, Word, Excel, R)
  • Communication Skills
  • Teamwork
  • Time Management

Languages

Greek
Advanced
English
Advanced

Education

Oct 2019 - Jun 2023

University of Ioannina

Bachelor of Science in Physics · Physics · Ioannina, Greece

Certifications & licenses

Driver's License B2

Electromagnetism

University of Macedonia

IBM – Generative AI Engineering Professional In Progress Certificate

Coursera

Problem Solving

University of Michigan

Quantum Mechanics Workshop

Business Canvas Models

Statistical Mechanics

Analytical Thinking ESDL

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