Giorgio Roffo PhD

Head of AI & Manager · AI Research Scientist

Large Language Models · Agentic AI · Efficient Inference · Reinforcement Learning · Computer Vision

13+ Years in AI Research
50+ Publications
2,590+ Citations
11,000+ FSLib Downloads

I am a PhD in Computer Vision leading applied LLM and agentic-AI research. I turn frontier research — LLM training, efficient serving, quantization, reinforcement learning, self-attention — into production systems, and I manage AI teams end-to-end, from data protocols to delivery.

My research spans infinite and linear self-attention, Transformers, feature selection, and computer vision, with 50+ publications at venues including ICCV, ECCV, IEEE T-PAMI, ACM Multimedia, ACM TOG, ACM CHI, and MICCAI. I created Infinite Feature Selection (Inf-FS) — published at ICCV 2015/2017 and in IEEE T-PAMI — and led AI R&D behind FDA-cleared medical AI deployed worldwide.

Currently leading the AI team and applied AI research at Equixly, building LLM-based multi-agent systems for automated API security testing. Open to selected research collaborations, invited talks, and advisory work.
Large Language Models Agentic AI Efficient Inference Model Compression RL with Tool Use Self-Attention Research Computer Vision AI Governance & EU AI Act

Core Skills

LLM Training & Alignment

PEFT, LoRA, SFT, RLHF, DPO, GRPO, DRPO, DDPO, online RL, Quantization-Aware Training (FP8), reward shaping, security-layer training and safety alignment for LLM agents.

Efficient Inference

vLLM, KV cache, prefix caching, prefill/decode balancing, speculative decoding (EAGLE-3, d-Flash, MTP), FP8 and NVFP4 quantization with calibration.

Agentic AI

Tool-calling agents, multi-agent orchestration, RAG, ReAct, Reflexion, CodeAct, and modern agentic workflows for autonomous problem solving.

Frameworks & Tooling

Python, PyTorch, Hugging Face, DeepSpeed, FSDP, DDP, TensorRT, ONNX, Docker, Kubernetes.

Research

Infinite and linear self-attention, Transformers, feature selection, and computer vision — from theory to peer-reviewed publication and deployment.

Professional Experience

Jan 2026 — Present

Head of Artificial Intelligence & Manager

Equixly — Agentic API Security · Verona, Italy

Equixly provides continuous, AI-agent-driven API penetration testing: agentic AI hackers testing at machine speed within modern CI/CD workflows, trusted by leading European banks, insurers, and payment/mobile providers. I lead the AI team and direct the company's applied AI research, taking self-hosted LLMs and agentic systems from research to production for automated API security testing — under strict ML protocols, rigorous data curation, and state-of-the-art evaluation.

  • AI-powered security agents: a production conversational assistant (trained LLM agent with RAG, security layers, and custom-script capabilities); an agent that repairs OpenAPI/Swagger specification files like a code agent with tool calling and RAG; an exploitation agent with workflow escalation, tool calling, and memory management; LLM-based penetration-test report generation with RAG for business-impact analysis; and an EU AI Act–compliant customer knowledge base.
  • LLM training & fine-tuning: PEFT/LoRA fine-tuning of self-hosted models; SFT and RL alignment; research on new self-attention mechanisms (infinite and linear attention).
  • Efficient serving (vLLM): KV cache, prefix caching, prefill/decode stage balancing, batching for parallel loads, and speculative decoding (EAGLE-3, d-Flash, MTP) with speculated-token tuning.
  • Quantization: FP8 and NVFP4 quantization of open-weight models with calibration; Quantization-Aware Training (QAT) for FP8 models and LoRA adapters.
  • Agentic AI & RL: RL training with tool calling; modern agentic workflows (Reflexion, Self-Refine, Voyager, CodeAct, MetaGPT, ChatDev, Mixture-of-Agents); penetration-testing agents for analysis and exploitation.
  • Security ML pipeline: schema-driven generation, stateful dependency-aware fuzzing, vulnerability-oriented testing, LLM-guided learning, and multi-agent systems, with benchmarks built from stateful, relationship-aware Docker service endpoints.
  • AI governance & management: per-feature compliance documentation and risk categorization under the EU AI Act; team planning, issue assignment, and deadline management in collaboration with the Product Manager and CTO.
2022 — 2025

Technical Lead & Senior AI Research Scientist

Cosmo Intelligent Medical Devices (IMD) · Milan, Italy

Led AI R&D for GI Genius, the first FDA-cleared AI system in gastroenterology, deployed worldwide.

  • Endoscopy vision models: built Polyp Sizing, Bowel Preparation Score Estimation, and Polyp Characterization with ResNet and Vision Transformers (ViT) via full fine-tuning — FDA-cleared and deployed worldwide on GI Genius.
  • Voice-based clinical reporting: technical lead of a clinical-reporting application in two flavors — a multimodal LLM + TTS pipeline and a standard LLM pipeline — with ASR via Whisper large-v3 and variants.
  • Data curation: DINOv2 embeddings for anomaly detection and clustering, surfacing mislabeled samples to clean training data.
  • AI governance: led the team's technical due diligence for third-party partners (assessing and onboarding external partner applications).
  • Full lifecycle: research, prototyping, and deployment as regulatory-compliant microservices; published in Medical Image Analysis (2025) and at MICCAI 2024.
2020 — 2022

Principal Investigator / Research Lead

Mind Vision Labs (UCL spin-off) & Toyota Research Institute · London, UK

AI research on autonomous-driving technologies with Prof. Nilli Lavie (head, UCL Attention and Cognitive Control Lab), partnering with Toyota Motor Europe's AI Division.

  • Driver attention / distraction detection with Vision Transformers (ViT), applying clustering and anomaly detection on embedded video frames to flag driver distraction.
  • Research on linear self-attention and Transformers for large-scale sensor data, improving autonomous-driving perception pipelines.
  • Research output: Self-Attention and Beyond the Infinite — a linear-attention Transformer with infinite self-attention, submitted to BMVC 2026.
2017 — 2020

Senior Research Scientist (Post-Doc)

University of Glasgow · Glasgow, UK

Three-year post-doc funded by an EPSRC investment of £355,564; managed a complex multi-university research project.

  • Deep learning and attention models for social signal processing with Prof. Alessandro Vinciarelli; taught one-third of the undergraduate Artificial Intelligence course (2019–2020).
  • Managed and mentored MSc/PhD students to graduation (multimodal depression analysis, autism-spectrum video analysis, attachment disorders), with peer-reviewed publications in IEEE, ACM, and BMVC venues.
  • Established a Glasgow–Stanford collaboration, supported by an appointment as Visiting Postdoctoral Scholar at Stanford University (Vision & Learning Lab, Prof. Silvio Savarese, 2019).
  • Weekly research collaboration with Heriot-Watt University on the EPSRC-funded SoCoRo project (2017–2019) — socially competent robots for autism research — recognized with a SICSA award for excellence in research collaboration.
2014 — 2017

Research Associate / PhD Candidate

University of Verona · Verona, Italy

  • PhD in Computer Science with Doctor Europaeus certificate (May 2017). Thesis: Ranking to Learn and Learning to Rank: On the Role of Ranking in Pattern Recognition Applications (Prof. Marco Cristani); 400+ citations from the thesis work.
  • Created Infinite Feature Selection (Inf-FS), connecting graph theory and feature selection by formulating the selection of features as a path on a graph — published at ICCV 2015, ICCV 2017, and in IEEE T-PAMI 2020.
  • Authored the Feature Selection Library (FSLib) for MATLAB — 11,000+ downloads — MathWorks Outstanding Contribution Award (2016) and MathWorks Research Summit invitations (Newton, USA).
  • Awarded the Cooperint International Programme (CIP) grant, University of Verona (2015).
2012 — 2013

Research Associate

Italian Institute of Technology (IIT) · Genova, Italy

  • Computer vision and user authentication with Prof. Vittorio Murino (head, PAVIS Lab) and Dr. Loris Bazzani: part-based models for pedestrian detection and tracking, pose estimation, and characterizing human behavior from social-media data.
  • Three-month research internship at the University of Glasgow, School of Psychology (Prof. Frank Pollick): ML classification of expert vs. novice CCTV-operator eye movements — first-author paper at CIARP 2013.

Education

2020

Post-Doctorate in Computer Vision (Deep Learning)

University of Glasgow — Prof. A. Vinciarelli

2016

PhD in Computer Science, Computer Vision (Doctor Europaeus)

University of Verona — Prof. M. Cristani

2013

Master I in Computer Game Development

University of Verona — Prof. U. Castellani

2011

MSc in Computer Science, Computer Vision (110/110)

University of Verona — Prof. M. Cristani

2009

BSc in Computer Science, Multimedia (110/110)

University of Verona — Prof. A. Fusiello

2004

Scientific High School Diploma, PNI (100/100)

Liceo Scientifico A. Messedaglia, Verona

Selected Publications All publications → Google Scholar

Self-Attention and Beyond the Infinite: Towards Linear Transformers with Infinite Self-Attention

G. Roffo, H. Abdelkawy, N. Lavie, L. Palmer

Submitted to BMVC 2026

A Survey of Large Language Models: Foundations and Future Directions

G. Roffo

Preprint, 2025

A Temporal Convolutional Network-Based Approach and a Benchmark Dataset for Colonoscopy Video Temporal Segmentation

C. Biffi, G. Roffo, P. Salvagnini, A. Cherubini

Medical Image Analysis (Elsevier), 2025

Feature Selection Gates with Gradient Routing for Endoscopic Image Computing

G. Roffo, C. Biffi, P. Salvagnini, A. Cherubini

MICCAI 2024 — Springer LNCS

Infinite Feature Selection: A Graph-based Feature Filtering Approach

G. Roffo, S. Melzi, U. Castellani, A. Vinciarelli, M. Cristani

IEEE Transactions on Pattern Analysis and Machine Intelligence (T-PAMI), 2020

Infinite Latent Feature Selection: A Probabilistic Latent Graph-Based Ranking Approach

G. Roffo, S. Melzi, U. Castellani, A. Vinciarelli

ICCV 2017 — IEEE International Conference on Computer Vision

Infinite Feature Selection

G. Roffo, S. Melzi, M. Cristani

ICCV 2015 — IEEE International Conference on Computer Vision

Discrete Time Evolution Process Descriptor for Shape Analysis and Matching

S. Melzi, M. Ovsjanikov, G. Roffo, M. Cristani, U. Castellani

ACM Transactions on Graphics (TOG), 2018

Automating the Administration and Analysis of Psychiatric Tests

G. Roffo, D.-B. Vo, S. Brewster, A. Vinciarelli, et al.

ACM CHI 2019 (Oral)

Trusting Skype: Learning the Way People Chat for Fast User Recognition and Verification

G. Roffo, M. Cristani, L. Bazzani, H. Q. Minh, V. Murino

ICCV Workshops 2013

Conversationally-inspired Stylometric Features for Authorship Attribution in Instant Messaging

M. Cristani, G. Roffo, C. Segalin, L. Bazzani, A. Vinciarelli, V. Murino

ACM Multimedia 2012

See all publications →

Awards & Honors

  • 2019 CVPR Outstanding Reviewer Award — IEEE/CVF Conference on Computer Vision and Pattern Recognition.
  • 2019 Rewarding Contribution Award — University of Glasgow.
  • 2018 MathWorks Research Summit — Invited participant, Newton, MA, USA.
  • 2017 NVIDIA GPU Research Grant — Computational resources for AI research.
  • 2016 MathWorks Outstanding Contribution Award — For the Feature Selection Library (FSLib), 11,000+ downloads.
  • 2015 Cooperint International Programme (CIP) — University of Verona.
  • SICSA research-collaboration award — Scottish Informatics and Computer Science Alliance, for excellence in research collaboration.

Highlights

  • 50+ publications at ICCV, ECCV, IEEE T-PAMI, ACM Multimedia, ACM TOG, ACM CHI, and MICCAI.
  • EPSRC investment of £355,564 funding a 3-year post-doc at the University of Glasgow.
  • FSLib (MATLAB): 11,000+ downloads.
  • Visiting Postdoctoral Scholar, Stanford Vision & Learning Lab (2019).

Invited Talks

  • MIT, MathWorks, ICCV, MICCAI, BMVC, ACM Multimedia.

Languages

  • Italian — Native  ·  English — Fluent (C1)

Key Collaborations

University of Verona

Cybersecurity research with Assistant Prof. Michele Pasqua (2026), and long-standing collaboration with Prof. Marco Cristani, co-founder of Humatics S.r.l. and Qualyco S.r.l.

University of Luxembourg

Cybersecurity research with Dr. Davide Corradini (2026).

University of Glasgow

Prof. Alessandro Vinciarelli — Director and Principal Investigator at the SOCIAL AI CDT, Advisory Board Member at Substrata.

UCL — Attention & Cognitive Control Lab

Prof. Nilli Lavie, 2020–2026: attention research and linear-attention Transformers.

Toyota Research Institute / Toyota Motor Europe

AI research on autonomous-driving technologies, 2020–2026.

Heriot-Watt University

Prof. Thusha Rajendran (Psychology, The National Robotarium) — EPSRC-funded SoCoRo project on socially competent robots.

Stanford University

Visiting Postdoctoral Scholar, Vision & Learning Lab (Prof. Silvio Savarese), 2019.

Worldwide Network

Research collaborations with scholars across 14 institutions worldwide.