karion_os
A bare-metal x86 OS kernel written in Rust. Unix-like shell, block filesystem, text editor, BASIC interpreter, and built-in games. Ported from C, and the borrow checker caught data races the original never would.
Product engineer · Lagos / worldwide
I design and build products end to end.
Damilare Osibanjo designs interfaces and ships full-stack systems, from sketch to deployed URL.
The practice
Interface design/Full-stack systems/Infra & systems
01 · Systems work
Depth underneath the product.
gnn-recommender
A graph neural network-based recommendation system built from scratch in PyTorch. Implements LightGCN, BPR loss, and 9 advanced techniques including knowledge graph augmentation, temporal gating, and self-supervised contrastive learning.
brpc
Small, fast JSON-RPC framework over multiplexed TCP streams. Binary framing, ring buffer flow control, TLS, compression. No Protobuf, no codegen, no dependencies.
track
A deterministic systems language with linear ownership, a Rust/Cranelift bootstrap compiler, and a native lexer marking its first step toward reproducible self-hosting.
ignite
Secure sandbox execution for JS/TS services inside hardware-isolated microVMs. Supports native Firecracker on Linux and Virtualization.framework on macOS.
02 · Showcase
Websites and designs, shipped.
03 · Working notes
Writing while the ideas are still warm.
no content treadmill
I Think I'm Developing Taste
Years of thinking in systems and correctness, and lately I keep opening Figma instead.
Track Can Now Read Itself
Track v0.7 contains a lexer written in Track. Here is what that first self-hosted component exposed, why the next compiler emits C, and what remains before a reproducible bootstrap.
rebuilding recommender systems: a gnn journey from scratch
How I built a Graph Neural Network recommendation engine from raw tensors and sparse matrices — and the systems/ML insights learned from LightGCN and 9 advanced optimizations.
Introducing Track: Deterministic Systems Programming with Linear Ownership
The original design case for Track's deterministic ownership model, now updated for its Rust/Cranelift bootstrap and staged path toward self-hosting.
A good conversation is a fine place to begin.
04 · Correspondence
Have a product to ship?
Open to full-time, contract, and remote product engineering work.