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hexfa/README.md
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Hi, I'm Amir Dehdarian Fallah

Senior Android & Flutter Developer | Security & Network | Self-hosted AI Builder

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Mobile Security Self-hosted AI

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Coding

About Me

I’m a Senior Android & Flutter Developer with 12+ years of experience building high-performance, secure, scalable, and user-focused mobile applications.

My main focus is not only building beautiful apps, but also designing strong foundations behind them: mobile architecture, networking, security, API communication, performance, and maintainable code.

I’m also actively working with self-hosted AI models and local AI tools to build private, flexible, and production-friendly AI-powered workflows.

  • Building modern Android & Flutter applications
  • Focused on Security, Networking, AppSec, API security, and secure mobile architecture
  • Working with self-hosted AI, local LLMs, RAG, vector search, and private AI assistants
  • Experienced with Kotlin, Java, Dart, Flutter, Firebase, REST APIs, WebSocket, Linux, Git, and backend integrations
  • Passionate about clean architecture, performance, automation, privacy, and smart mobile products
  • Ask me about Android, Kotlin, Java, Flutter, Web, Network, Security, Firebase, and Self-hosted AI

Important

I care deeply about building apps that are not only beautiful and fast, but also secure, reliable, scalable, and privacy-aware.


Amir Dehdarian Fallah

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What I Do Best

Mobile Engineering

Native Android, Kotlin, Java, Flutter, Dart, Firebase, scalable app architecture, clean code, performance optimization, and production-ready mobile features.

Security & Networking

Secure API communication, authentication flows, token handling, network debugging, request/response inspection, WebSocket, encryption concepts, and mobile AppSec practices.

Self-hosted AI

Local LLMs, private AI assistants, Ollama-based workflows, RAG pipelines, vector databases, model serving, and AI features that can run closer to your own infrastructure.

Product Engineering

Turning ideas into polished products: architecture, implementation, debugging, release, automation, UX improvement, monitoring, and long-term maintainability.


Tech Stack

Tech Stack


Mobile Development

Android Kotlin Java Flutter Dart Firebase


Security & Network Focus

API Security Network Debugging Authentication JWT Token Flows WebSocket REST APIs Proxy Traffic Inspection Secure Mobile Architecture

Security Mindset:
Secure API Design  •  Authentication  •  Network Layer Hardening
Token Management   •  Request Signing •  Debugging & Monitoring
Privacy Awareness  •  Clean Architecture with Security in Mind

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  1. todo todo Public

    This is a Flutter app designed to interact with the Todoist API, offering a seamless task management experience.

    Dart 1 1

  2. PassEntry PassEntry Public

    Simple Android Application for PassEntry

    Kotlin 5 13

  3. ComposeApp ComposeApp Public

    This is an Android project that showcases the use of canvas APIs, such as Bezier curves, drawArcs, clipPath, and more, using Jetpack Compose.

    Kotlin 13 9

  4. Springboot_Weather_API_By_Openweathermap Springboot_Weather_API_By_Openweathermap Public

    Java Springboot Weather API By Openweathermap.com service

    Java 6

  5. NASAGallery NASAGallery Public

    Nasa App Gallery by MVVM

    Kotlin 6 1

  6. ReactSelfieApp ReactSelfieApp Public

    This project is a simple React selfie application

    JavaScript 3