Freelance developer working across mobile apps, web and backend services, and application security — from the phone in someone's hand down to the Linux box serving it.
Three areas, and the overlap between them is where most of the work happens.
Android and iOS, in Flutter with native platform code where it counts — camera pipelines, hardware codecs, file handling, in-app purchases and ads that pass store review.
Services and APIs end to end: Go and PHP behind nginx, MariaDB and PostgreSQL, TLS and Cloudflare in front, deployed and maintained on the Linux servers underneath.
Hardware-backed key attestation, verified boot and integrity checks on the device side; hardening, least-privilege and honest data disclosure on the server and store side.
My own products, both live on Google Play with iOS versions in development. Free to use, supported by ads, with a single one-time purchase to remove them.
A complete PDF toolkit that works offline. Your documents never leave the device, because there is no server to send them to.
A read-only device inspector. It asks the same question from four separate processes and shows you where the answers disagree.
Not an antivirus. It does not require root, changes nothing on your device, and only reports what it reads.
Four rules that decide what goes into an app and, more often, what stays out.
Processing happens locally. No upload queue, no account, no backend keeping a copy of your files.
The only data collected is what ads and store analytics require, and it is listed in full in each app's privacy policy.
Every app is usable for free. Removing ads is a single one-time purchase — no subscription, no trial that quietly renews.
Store listings describe what the code actually does. No promised protection an app cannot deliver.
Support requests, bug reports, privacy questions and business enquiries all go to the same inbox.