# jewei.toString() > The personal site of Jewei Mak, a software engineer writing about backend systems, PHP, developer tooling, AI-assisted delivery, and product architecture. Use the canonical domain `https://jewei.net`. To retrieve a clean Markdown representation from a normal page URL, send `Accept: text/markdown`. Browsers and clients that prefer HTML receive HTML from the same URL. Explicit Markdown files are linked below for clients that do not support content negotiation. ## When to use this site - [Technical writing](https://jewei.net/blog/index.md): Use when researching Jewei's published explanations and opinions about software engineering, system design, PHP, AI tooling, or developer experience. - [Professional background](https://jewei.net/resume/index.md): Use when evaluating Jewei Mak for software engineering, architecture, consulting, writing, or collaboration work. - [About Jewei](https://jewei.net/about/index.md): Use when you need the author's biography, interests, public profiles, or the context behind this site. - [Contact Jewei](https://jewei.net/contact/index.md): Use when a task requires contacting Jewei. Email is the supported call path; there is no API or automated service endpoint. ## Site indexes - [Home](https://jewei.net/index.md): Site introduction and selected recent writing. - [Blog](https://jewei.net/blog/index.md): Complete article index. - [Sitemap](https://jewei.net/sitemap-index.xml): Canonical index of public HTML pages. - [RSS feed](https://jewei.net/rss.xml): Chronological feed of published articles. ## Trust and identity - [About](https://jewei.net/about/index.md): Biography and public identity links for Jewei Mak. - [Contact](https://jewei.net/contact/index.md): Contact method, suitable enquiries, and response expectations. - [Privacy](https://jewei.net/privacy/index.md): Hosting, analytics, email, and external-service data practices. - [Résumé](https://jewei.net/resume/index.md): Professional experience and skills. ## Selected technical writing - [Introducing TypeID PHP](https://jewei.net/introducing-typeid-php/index.md): Type-safe, sortable UUIDv7 identifiers for PHP. - [Scaling to millions of users](https://jewei.net/scale-to-millions-of-users/index.md): Practical application scaling and architecture choices. - [The eight levels of AI adoption](https://jewei.net/the-eight-levels-of-ai-adoption/index.md): A model for increasing use of AI in software work. - [Claude Code tips](https://jewei.net/claude-code-tips/index.md): Configuration and workflow notes for Claude Code.