Hey, I'm Sung-Kyu 👋

I'm a backend engineer based in South Korea, working on distributed systems and infrastructure tooling. My main focus is building the fundamental primitives that connect existing
services into a coherent distributed system — things like service mesh, key-value stores, and cloud emulation layers.

What I'm working on:

• devcloud — A local CSP emulator (currently AWS) with boto3 compatibility and Smithy-driven codegen. Great for testing cloud-dependent code without real AWS resources.
• bit-axon — A hybrid small LLM for Apple Silicon using SSM + MoE sandwich architecture on MLX. Exploring efficient inference on consumer hardware.
• acor — Aho-Corasick automation built on Redis/Valkey for fast pattern matching at scale.
• kvs — A distributed key-value store, usable as a standalone server or a Go module.

Why sponsor?

All of my projects are open source and developed in my free time. Sponsorships help me dedicate more time to building and maintaining these tools, cover infrastructure costs (CI, testing on real hardware), and keep the projects dependency-free and well-documented.

If you use any of my projects or just want to support open-source infrastructure work, I'd really appreciate it!