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leon --about
Leon Kelvin Li — the person who writes the code
Leon Kelvin Li is an independent software developer working with businesses across the united states. he builds business websites, iphone and android apps, online ordering, booking systems, ai assistants and the automation that runs behind them — and he does the work himself, so the person you talk to is the person writing the code.
he works in english, chinese, portuguese and spanish. that matters more than it sounds: a lot of owners can describe their problem precisely in their own language and only roughly in english, and the rough version is where projects go wrong.
what he has actually built
- an iphone app that is on the app store today — built solo end to end, including subscriptions and app store review
- an online ordering system where one kitchen runs several brands and a single cart splits itself per brand, with each brand's accounting kept separate
- a tool that reads the reviews a business receives and drafts the replies from that business's own verified facts — a human still presses send
- a market scoring system covering all 33,772 us zip codes across nine data sources, every score carrying an uncertainty band instead of false precision
- a compliance-aware assistant in chinese where deterministic safety rules run before any model does, and it declines to answer rather than break advertising law
how he works
- one person, on purpose — no account manager, no handoff to a junior
- a written fixed price before any work starts, and it does not change after
- a working demo you can open in a browser every week, not a status email
- you own everything: domain, hosting, code, accounts and data, in your name from day one
- he will tell you when you don't need him — a script or an off-the-shelf tool is often the right answer, and saying so is cheaper than being wrong
background
he is a computer engineering student at California State University, East Bay and a working developer with production systems running today. both are true at once, and he would rather say so than hide either.
he writes under the name Noctilucenty, which is where his code lives on github.