About

William Alexakis

I'm a 16-year-old Student of Software Engineering from Athens, Greece. Mainly interested in systems software.

My current project -- Lanthanum -- is a decoder-only transformer inference engine for CPU in C++ with minimal dependencies, since I've recently been focusing in Large Language Models.

Competitively, I placed 1st in the Line Robot Competition at StCatsHacks for three consecutive years as my team's lead programmer, and I'm a member of the STEM Racing/F1 in Schools team Thaton Motorsport.

Aside from CS work, I also enjoy philosophy of science, analytical writing, student leadership, and skiing.

By the end of this year, I'm planning to write the SAT exam as well as prepare for the USA Computing Olympiad and Canadian Computing Competition.

And once I graduate, I plan to study Computer Science in the United States and pursue Software Engineering as a career.

Projects

Lanthanum • 2026

A decoder-only transformer inference engine for CPU handwritten in C++ with minimal dependencies.

Phase • 2025

A statically-typed bytecode-interpreted programming language handwritten in C with zero dependencies.

Writings

Writing My Own LLM Inference Engine [WIP] I Led an Initiative for Two Hundred Students [WIP] Writing My Own Programming Language