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I am Ioannis Charitos, a Data Scientist with a Master’s in Machine Learning and AI from Aristotle University of Thessaloniki. My work focuses on Data Science, Machine Learning, Biomedical NLP, and Large Language Models. I enjoy building AI-powered data systems using Python, PyTorch, TensorFlow, and transformer-based architectures. Currently I work as a Solution Architect at Dataviva, developing an internal documentation agent and exploring Transformer-based Demand Forecasting. Previously, I served as Data Scientist / AI Engineer at Deus Ex Machina, building RAG components, fine-tuning models for classification, and creating NER solutions.…I am Ioannis Charitos, a Data Scientist with a Master’s in Machine Learning and AI from Aristotle University of Thessaloniki. My work focuses on Data Science, Machine Learning, Biomedical NLP, and Large Language Models. I enjoy building AI-powered data systems using Python, PyTorch, TensorFlow, and transformer-based architectures. Currently I work as a Solution Architect at Dataviva, developing an internal documentation agent and exploring Transformer-based Demand Forecasting. Previously, I served as Data Scientist / AI Engineer at Deus Ex Machina, building RAG components, fine-tuning models for classification, and creating NER solutions.

Ioannis Charitos

Data Scientist, AI Engineer, Developer, +4

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I am Ioannis Charitos, a Data Scientist with a Master’s in Machine Learning and AI from Aristotle University of Thessaloniki. My work focuses on Data Science, Machine Learning, Biomedical NLP, and Large Language Models. I enjoy building AI-powered data systems using Python, PyTorch, TensorFlow, and transformer-based architectures. Currently I work as a Solution Architect at Dataviva, developing an internal documentation agent and exploring Transformer-based Demand Forecasting. Previously, I served as Data Scientist / AI Engineer at Deus Ex Machina, building RAG components, fine-tuning models for classification, and creating NER solutions.…I am Ioannis Charitos, a Data Scientist with a Master’s in Machine Learning and AI from Aristotle University of Thessaloniki. My work focuses on Data Science, Machine Learning, Biomedical NLP, and Large Language Models. I enjoy building AI-powered data systems using Python, PyTorch, TensorFlow, and transformer-based architectures. Currently I work as a Solution Architect at Dataviva, developing an internal documentation agent and exploring Transformer-based Demand Forecasting. Previously, I served as Data Scientist / AI Engineer at Deus Ex Machina, building RAG components, fine-tuning models for classification, and creating NER solutions.

Available to hire

I am Ioannis Charitos, a Data Scientist with a Master’s in Machine Learning and AI from Aristotle University of Thessaloniki. My work focuses on Data Science, Machine Learning, Biomedical NLP, and Large Language Models. I enjoy building AI-powered data systems using Python, PyTorch, TensorFlow, and transformer-based architectures.

Currently I work as a Solution Architect at Dataviva, developing an internal documentation agent and exploring Transformer-based Demand Forecasting. Previously, I served as Data Scientist / AI Engineer at Deus Ex Machina, building RAG components, fine-tuning models for classification, and creating NER solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Data Scientist / AI Engineer at Deus Ex Machina

January 1, 2022 - Present

Developed the Retrieval-Augmented Generation (RAG) component of an automatic Biomedical Report Generation pipeline. Fine-tuned an OpenAI GPT model using Reinforcement Learning with Human Feedback (RLHF) for a food database classification problem. Employed state-of-the-art machine learning methods and contributed to the development of advanced AI solutions from 2022 onwards.

Data Scientist / Machine Learning Engineer at Deus Ex Machina

January 1, 2022 - August 5, 2025

Developed a Scientific Articles Summarization pipeline using a Transformers-based BART model. Trained and deployed Neural Networks for Biomedical Named Entity Recognition (NER). Worked extensively with biomedical NLP applications and modern machine learning frameworks during the period from 2019 to 2022.

Solution Architect at Dataviva

January 1, 2025 - Present

Develop an internal documentation agent for sharing across the company and its clients. Explore Transformers-based Solutions for Demand Forecasting.

Machine Learning Engineer at Deus Ex Machina

October 1, 2020 - December 1, 2022

Combine Transformers models with ChatGPT for scientific articles summarization. Train and deploy Neural Networks for Biomedical Named Entity Recognition (NER).