Vassilis Zeimpekis

About Me

I am a second-year Electrical and Computer Engineering (ECE) student at the University of Patras and a systems researcher with Brown University's Atlas group. My current research involves high-level systems security, focusing on hardening AI agents using deterministic techniques.
My primary engineering interest - and the focus of my personal projects - is low-level systems and security. I am exploring bare-metal development and recently built a custom operating system from scratch to deeply understand kernel-level interactions. In my free time, you can find me diving in FPGA design, operating systems, and custom electronics.

Core Skills

Systems & Security

Systems Architecture: Custom OS development, bare-metal programming, and kernel-level interactions
Security: AI agent systems hardening using deterministic techniques
Environment: Linux/Unix internals, Bash scripting
Languages: C, C++, Rust, Python, JavaScript, C#

Hardware & Embedded

Digital Logic: FPGA programming and HDL (Verilog/VHDL)
Electronics: Custom electronics design, prototyping, and hardware-level debugging
Embedded: Microcontroller programming and development

Featured Projects

SkylOS - Educational Operating System

Operating Systems | C | Assembly | Educational

Developed an educational operating system from absolute scratch.

Bootloader written in assembly.
Interrupt handling system.
Virtual memory management.

Operating Systems Lab Material

Operating Systems | Lab Material | C | Assembly | Interrupt Handling

Collaborated with Vagos Lamprou to extend the lab material for the operating systems course in University of Patras.

Wrote assignments on SkylOS project for students taking the course.
Composed educational matterial to prepare readers for solving the assignments.

Experience

Undergraduate Research Collaborator

Brown University - Atlas Group

March 2026 – Present

Hardening AI agent security using shell analysis techniques.
Researching JIT analysis for shell.

Education

Integrated Master Student

University of Patras | Expected Graduation: 2029

Relevant Coursework: Digital Systems and Circuits, Object-Oriented Programming, Procedural Programming, Introduction to Computers, Signals and Systems Analysis.