Android & full-stack engineer

Android apps and system tooling in Kotlin, services in Python and Node, frontends in React, PostgreSQL for storage.

A patch manager for rooted Android devices. It uses LSPosed / libxposed (API 101) to apply bytecode patches to other apps as they start. The target APK is not modified on disk, so it keeps its original signature and Play Protect status.

• Patches ship as signed .nxb bundles loaded into process memory, not installed as apps. They come from Nexfusion-Patches.
• Obfuscated class and method names are resolved at runtime with DexKit, using bytecode opcode patterns and string fingerprints. Fixed offsets would break on the next app update; pattern matching usually does not.
• Each hook runs inside error handling, so a patch that fails to resolve leaves that one feature off instead of crashing the host app.
• Banking, payment and security-critical apps are excluded from patching.

Supported targets include YouTube, Reddit, Instagram, Facebook, Telegram, X and Maps. Requires Android 8.1+ (API 27) and root.

Seven Parquet tables of garden retail data are loaded into PostgreSQL, served by a FastAPI backend and displayed in a React dashboard covering sales, orders, customers, products, payments, returns and shipping time. Dark and light themes, with the choice remembered per browser.

Upload a CSV and the app profiles its columns, runs validation checks, stores the dataset in PostgreSQL and lets you explore it. FastAPI backend, React frontend.

It began as an analysis of the Olist Brazilian e-commerce dataset (99K orders, 91.9% delivered on time or early) feeding a Power BI report. That version is gone: the current app takes one CSV at a time and does not join separate tables.

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