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orestislef/README.md

Hey, I'm Orestis Lef

Software Developer from Greece | Mobile & AI Solutions

Portfolio LinkedIn GitHub followers

About Me

val orestislef = Developer(
    location = "Thessaloniki, Greece",
    focus = listOf("Mobile Development", "AI Solutions", "Backend Systems", "Voice AI & Telephony"),
    languages = listOf("Dart", "Kotlin", "Java", "PHP", "Python")
)
  • Building intelligent mobility solutions with AI
  • Building automated voice call flows — real-time TTS/STT pipelines on Asterisk (e.g. an AI taxi-booking phone agent)
  • Passionate about clean architecture and great UX
  • Always exploring new technologies

Philosophy

They say 90% of software coding will be gone, so we won't need software engineers anymore. Meanwhile, we're hiring more software engineers than ever. The reason? A software engineer's job is to solve problems — and to dream up problems worth solving. To innovate.

I never hired someone and said, "Guess what, you're a software engineer — here's a keyboard, show me how many words per second you can type." Typing isn't the job. Coding isn't the job. Solving problems is the job.

Tech Stack

Languages

Dart Kotlin Java PHP Python JavaScript TypeScript

Frameworks & Tools

Flutter Android Spring Firebase Docker MySQL PostgreSQL Asterisk

Featured Projects

Project Description Links
Laiki Markets Find Greek street markets near you Live · Code
Claude AI Builder Build websites by chatting with AI Live · Code
Slot Simulator Mathematical slot machine with 95% RTP Live · Code
Minesweeper Classic game with modern design Live · Code
IRIS QR Generator QR codes for IRIS payments Live · Code
System Monitor Real-time server metrics Live · Code

View all projects →

Published Packages

pub.dev publisher

Package Description Version
sip_helper Lightweight SIP/VoIP library for Dart — SIP (UDP), RTP audio, G.711 A-law, native audio I/O v
bring_app_to_foreground Wake a Flutter app from background on Android for incoming VoIP/dispatch calls & alarms v
iris_payment Greek IRIS payment QR generator with AFM (VAT/Tax ID) validation & styled QR codes v
flutter_map_tile_switcher Switch map tile providers (OSM, Google, Satellite) with caching & auto dark mode v

GitHub Activity

Repos Commits Languages

Let's Connect

Website LinkedIn Email

Building software that makes a difference

Popular repositories Loading

  1. Techblog-old- Techblog-old- Public

    This is an Application in building progress to test WORDPRESS Rest API comunicate with android application written in java

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  2. ios-fake-gps ios-fake-gps Public

    Lockito-style GPS location simulator for a non-jailbroken iPhone, driven from a native macOS app (SwiftUI + MapKit). Teleport, route playback, speed, loop and jitter.

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    Vero mobile app

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    simple flutter ai input output interface for LM Studio Community/Meta-Llama-3-8B-Instruct-GGUF

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  5. dentalTimer dentalTimer Public

    App made in flutter for dental Timer

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  6. slot slot Public

    Slot machine simulator with 5 reels, 10 paylines, bonus rounds, and RESTful API. ~95% RTP.

    HTML 1