contracting

A practical overview of the Korean tax obligations that apply when you invoice foreign clients — business income vs. employment income classification, VAT considerations, NTS filing deadlines, and why you need an accountant before your first foreign invoice.

Why most runbooks fail, how to write infrastructure documentation that outlasts you, and the specific formats I use for handoffs, architecture overviews, and incident response — with templates you can adapt.

An honest comparison of Google Cloud and AWS certification paths for independent engineers — job market reality, skill overlap, which platform pays better for contractors, and the case for picking one and going deep.

Statement of work templates, discovery calls, and estimate buffers — what I learned after a migration project ran 40% over the hours I quoted.

A practical guide to combining a full-time engineering job with a side teaching contract — covering time management, tax structure, rate-setting, and the unexpected ways each role makes you better at the other.

A practical guide to the non-technical work of contracting — setting expectations, managing scope, handling difficult conversations, and building the kind of client relationships that generate referrals and renewals.