cat /home/john/profile.txt

AI/ML Engineer & Technical Mentor

2023 – Present | Freelance • Athens, Greece

Building production AI systems and training next-generation AI engineers.

• Dolores Platform: Full-stack AI storytelling engine • 5,000+ LOC, 93% test coverage • Real-time LLM streaming + async image generation
• Hebikata: Gamified Python learning platform • 25+ active users • 25% retention increase through adaptive algorithms
• Technical Training: Mentored 15+ professionals • 100% completion rate • 12/15 secured AI/ML roles within 6 months
• Omninode (2026): Comprehensive AI engineering course • Python → Databases → LLMs → Docker → APIs → Deployment
• Tech Stack: Python, Ollama, LangChain, Flask, ComfyUI API, Docker, Vector DBs, TensorFlow, PyTest, Git

Team Leader | POSEIDON Shell Eco-Marathon

2013 – 2018 | University of West Attica → Rotterdam/London

Led 8-person engineering team to international competition success.

• Achievement: Design Award + Top 10 finish among 200+ international teams
• Technical: Power electronics, motor control systems • 15% energy efficiency improvement
• Innovation: Custom DIY optical rotary encoder for precise metrology
• Management: €15,000 budget • 3-year development cycle • Cross-functional team coordination

Research Assistant | Industrial Measurements Lab

2015 – 2016 | University of West Attica

Advanced experimental fluid dynamics research under Dr. Ioannis Lekakis.

• Research: Experimental fluid dynamics & turbomachinery • Contributed to 3 research projects
• Teaching: LabView, Matlab, oscilloscope, anemometry to 50+ students
• Recognition: Scholarship offer from Cranfield University (UK) - Dean nomination, 2015

Quality Manager | COSMETIC Tsatsos

2016 – 2017 | Athens, Greece

• Implemented ISO 9001 quality system • 30% defect rate reduction • 25% efficiency improvement
• Root cause analysis prevented €50K potential loss through critical sensor error identification
• SolidWorks CAD design for INOX pump system • 20% downtime reduction

Dolores - AI Storytelling Platform ⭐

Python • Flask • Ollama • ComfyUI • SQLAlchemy • Vector DB
Full-stack AI platform integrating local LLMs with real-time photorealistic image generation.

• Scale: 5,000+ LOC • 93% test coverage • Production-ready architecture
• Architecture: REST APIs, WebSocket streaming, async processing, vector embeddings, health monitoring
• Features: Real-time LLM responses, context-aware image generation, semantic search, rotating logs
• Performance: Sub-second response times for LLM queries, efficient async image generation pipeline

Hebikata - Interactive Python Learning ⭐

Python • Streamlit • pytest
Gamified education platform combining spaced repetition with automated testing.

• Impact: 25+ active users • 25% retention increase • 100% assessment accuracy
• Features: RPG-style progression, automated unit testing, achievement tracking
• Pedagogy: Code kata methodology, personalized learning paths
• 💻 View on GitHub • Try Live Demo

ComfyUI Production Workflows

Diffusion Models • SDXL • FLUX • ControlNet
15+ production-ready AI art generation pipelines.

• Optimization: 40% faster inference through sampler/scheduler tuning
• Integration: CLIP interrogation + Ollama for context-aware generation
• Models: SDXL, FLUX.1, QWEN, WAN2.1/2.2 • Custom LoRA pipelines

This Portfolio Website

Flask • Python • CSS • JavaScript
Security-hardened, accessible terminal-themed portfolio with Markdown blog system.

• Security: Full HTTP headers, HTML sanitization, path traversal protection
• Design: Custom theme system, dark/light modes, responsive layout
• Features: Dynamic Markdown rendering, syntax highlighting, 404 handling

Master of Science in Computer Science

University of West Attica | 2018 - 2019

Specialization: Artificial Intelligence & Machine Learning

• 98% grade in Advanced AI course (Top 2% of cohort)
• Coursework: Neural Networks, Genetic Algorithms, Fuzzy Systems, CUDA Parallel Computing
• Projects: Genetic algorithm with CUDA acceleration • Neural network classifier (92% accuracy)

Bachelor of Science in Mechanical Engineering

University of West Attica | 2004 - 2018

Focus: Applied Mathematics, Control Systems, CAE/CAD, Fluid Dynamics

• Team Leader: POSEIDON Shell Eco-Marathon (Design Award, Top 10)
• Research: Industrial Measurements Lab under Dr. Ioannis Lekakis
• Recognition: Scholarship offer - Cranfield University, UK (2015)

Certifications & Continuous Learning

• ✅ CS50 - Harvard (In Progress)
• ✅ CS50AI - Harvard (In Progress)
• ✅ Master n8n AI Agents - Udemy (2025)
• ✅ Certified Life Coach Training (2025)
• ✅ Go: Complete Developer's Guide (2025)
• ✅ JavaScript Course 2025 (In Progress)
• ✅ MATLAB Research Certification
• ✅ Energy Audit of Buildings Certification