Java2025
MaterialX
A design source for Android developers: a working catalogue of Material components, patterns and layouts to lift into a project, with documentation hosted separately.
★ 7⑂ 3
Profile
Since 2018 · 37 reposI build mobile applications for Android and iOS, increasingly out of a single Kotlin Multiplatform codebase — business logic, data, and increasingly the UI written once and shipped to both. Currently at Cashi, on fintech products used by merchants and agents in the field. Java where the codebase has history.
The thread running through my public work is device integration: reading NFC tags in reader mode, wiring up Honeywell and Zebra hardware, scanning barcodes with ML Kit and ZXing, and handling Google Pay flows. It’s the unglamorous half of mobile — the half where the bug is in the tag, the scanner profile, or the print buffer, not in your layout. Shared code makes it more interesting, not less: the platform boundary is exactly where the hardware lives.
Alongside that: architecture I can hand to someone else. Multi-module Gradle projects, clear state handling, and small libraries that remove the code everyone rewrites. Public repositories are on GitHub; longer profile on Google Developers.
Case Code
Founded 2020
Case Code is my own company — an online studio that builds and develops software. I founded it in June 2020 and run client engagements through it.
It’s where work outside a salaried role goes: multiplatform mobile builds, device and payment integrations, and the architecture work that keeps a codebase maintainable after handover. Small by design — you talk to the person writing the code.
- Websitecase-code.github.io
- FoundedJune 2020
- FocusMultiplatform mobile · device & payment integration
- Organisationgithub.com/Case-Code
- EngagementsUpwork agency profile
- Enquiriesabdelaz9z@icloud.com
Selected work
Open sourceKotlin2025
NFC-Reader
Puts the device into NFC reader mode, reads tag payloads and surfaces tag metadata — a small, readable reference for anyone starting with NFC on Android.
★ 2⑂ 1
JavaSQLite
IMS-SQLite
An integrated medical information system: patient records and registration, order entry, specimen tracking, results reporting, pharmacy, scheduling and billing, on a local SQLite store.
★ 4⑂ 1
Java2026
Mobile Movie Explorer
Browse and search a full film catalogue over the MovieDB API, with a published design case study on Behance.
API
KotlinMultiplatform
MoodleClient
A Moodle client with the logic written once in Kotlin and an iOS target alongside the Android app — the largest and most recent of the public repositories.
iOS + Android
JavaFirebase
BirdMessage
Real-time messaging: text and photos delivered across platforms, backed by Firebase authentication, database and storage.
★ 1
KotlinLibrary
AndroidUtilities
The helper layer every project ends up rewriting — extracted once, so the next project starts further along.
50 KB
KotlinTemplate
Mealz
A multi-module architecture starter: feature modules, a shared core, and the Gradle wiring to keep build times sane as a team grows.
Gradle
KotlinHardware
PrinterApp
Driving Zebra label printers from Android — connection handling, format and print jobs.
Zebra
Field notes
Published gistsSolutions written down the day they were solved, so the next person — usually me — doesn’t start from zero.
Scan barcodes with ML Kit on Android
Setting up ML Kit’s barcode scanner in Kotlin, with the analyzer wiring included.
Kotlin · ML KitHoneywell scanner configuration
Step-by-step barcode scanning settings for Honeywell handheld devices.
HardwareSplitting modules with git subtree
Extracting a module into its own repository and keeping the full commit history.
GitBarcode scanning with ZXing
The short version of getting ZXing running in an Android app.
AndroidGoogle Pay helper methods
Static helpers for building requests against the Payments API.
PaymentsAndroid project & code guidelines
A convention cheat sheet — naming, structure and review rules for a team codebase.
PracticeToolkit
Languages
- Kotlin
- Kotlin Multiplatform
- Java
- Swift interop
- SQL
Shared code
- Compose Multiplatform
- Jetpack Compose
- Coroutines & Flow
- Room · Retrofit
- MVVM · unidirectional state
- Multi-module Gradle
- Firebase
Devices & payments
- NFC reader mode
- ML Kit · ZXing scanning
- Honeywell scanners
- Zebra label printers
- Google Pay
Get in touch
Available for workHappy to talk about multiplatform roles, contract work through Case Code, or anything that involves an app and a piece of hardware that refuses to cooperate.