I'm Fadhil Hanri, an iOS and Frontend Web Developer. I design and build local-first mobile applications and performant client-side web interfaces.
Below are the architectural summaries, algorithmic breakdowns, and design choices behind my primary shipping projects.
A mentoring log, not a runbook. Each section is one small, practicable part: what the piece is, why it's there, the actual config that's running, one thing you can do right now to see it work, and the check that proves you understood it.
A build log on the AssessNow marketing site: Svelte 5 runes without SvelteKit, a 60-line i18n store, a CSS-variable design system, and the interactive demo I deleted.
Architecting scalable and offline-first mobile systems using native toolchains.
Structuring relational models and query filters for offline application performance.
Designing modern, responsive layout layers with a strong focus on accessibility.
Prototyping fluid user interfaces and coordinating technical workflows.
I'm Fadhil Hanri Kamarz, a Web and iOS Developer based in Jakarta.
My academic background is in petroleum engineering, but my passion lies in technology. Driven by the philosophy of "Do what you love", I transitioned into software development. I started my journey by learning HTML and JavaScript because the tools were lightweight, highly accessible, and run on any laptop.
Today, I specialize in building local-first applications, native mobile architectures, and custom data parsers.
Leading and scaling native iOS digital wallet applications, optimizing transaction processing performance, and implementing secure, high-traffic payment flows (Promoted to Senior iOS Engineer in Jan 2026).
Architecting and building production native mobile e-commerce features, optimizing offline sync behaviors, and designing fluid, interactive interfaces.
Implemented client-side features for iOS layout interfaces, designing custom interactive view controls, and building modular network components.
Trained in native iOS engineering, human interface guidelines (HIG), agile development, and collaborative app delivery workflows.
If you'd like to collaborate, talk about iOS architecture, or discuss a project, feel free to contact me: