rnavarych

Expert guidance on iOS native development — Swift and SwiftUI best practices, UIKit interop, Core Data and SwiftData persistence, Combine…

Cloud IoT platform integration covering AWS IoT Core, Azure IoT Hub, and Google Cloud IoT.

IoT device lifecycle management including zero-touch provisioning, firmware OTA updates with rollback, device registry, device twin/shadow…

IoT communication protocol selection and advisory covering MQTT, CoAP, AMQP, HTTP comparison, wireless technologies (Zigbee, Z-Wave, BLE…

Guides double-entry ledger design: journal entries, chart of accounts, sub-ledgers (AR, AP, GL), reconciliation between ledgers, immutable…

Flutter 3.27+ patterns — Riverpod 2 state with codegen, GoRouter 14+ navigation, Impeller rendering (default on all platforms), WASM web…

Expert guidance on mobile performance optimization — achieving 60fps rendering, memory management (leak detection, large image handling)…

MQTT messaging patterns for IoT systems including topic hierarchy design, QoS level selection, retained messages, last will and testament…

Expert guidance on offline-first mobile architecture — local database sync (WatermelonDB, Realm, Hive, SQLite), conflict resolution…

Order processing for e-commerce: order state machine (pending through delivered/cancelled/returned), fulfillment workflows…

PCI DSS compliance for e-commerce: compliance levels (SAQ A, SAQ A-EP, SAQ D), cardholder data handling, tokenization (Stripe, Braintree…

Database performance troubleshooting across all engines.