Senior Software Engineer · Building agentic platforms with LangGraph · PhD candidate, multimodal video summarization

I am a Senior Software Engineer at ProxyFoods building agentic recipe generation with LangGraph, RAG and OpenFGA. I am also a PhD candidate in Computer Science at the University of Thessaly, where my research covers multimodal video summarization, computer vision and audio. I am based in Athens, Greece.

• 🔭 Now: agentic platforms (LangGraph, RAG, human-in-the-loop) at ProxyFoods.
• 🧠 Before: ML and full-stack work at MyTripMyWay, Behavioral Signals, NCSR Demokritos and Optechain.
• 🏆 Winner of the "Code the IoT Hackathon" of the MaTHiSiS project, University of West Attica.
• 🍺 Off the clock I enjoy craft beer, and I pair-program with Barney, my dog.

The full experience, publications and CV live on theopsall.github.io.

• Video summarization based on feature fusion and data augmentation, Computers, 2023
• Multimodal summarization of user-generated videos, Applied Sciences, 2021
• Multimodal video summarization based on fuzzy similarity features, IEEE IVMSP, 2022

All eight are on Google Scholar and listed with DOIs on the website.

• Video-Summarization: code and dataset for my MSc thesis on multimodal summarization of user-generated videos
• multiSmote: a multi-label approach to the SMOTE algorithm
• deep_video_extraction: deep audio and visual feature extraction from video
• video_annotator: web app for annotating video shots

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