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Hi, I'm Klearxos Xlioumphs

Junior Software Developer

I'm a

Passionate about building innovative solutions with modern technologies — specialized in mobile development across Android & iOS, cross-platform apps, and robust backend systems.

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<ABOUT_ME/>

Core Specialties

MOBILE DEVELOPMENT

BACKEND DEVELOPMENT

SOFTWARE ARCHITECTURE

Core Languages

  • Kotlin
  • Swift
  • Flutter
  • React Native

Education

Graduate of IEK DELTA 360 in the Backend Developer specialisation — a post-secondary vocational diploma that underpins my server-side, API and database work.

Professional Experience

Junior Software Developer with roughly a year of professional experience building enterprise Warehouse Management (WMS) & B2B logistics software in Java 17, alongside native Android apps in Kotlin.

Junior Software Developer

Building enterprise Warehouse Management (WMS) and B2B logistics software in Java 17 and Kotlin. Project lead on a ground-up Dynamic WMS Android application.

Key Contributions & Responsibilities:

  • Project Lead — Dynamic WMS: owned the new Android WMS app end-to-end.
  • Migrated the UI from Material 2 → Material 3 (worked across both frameworks) and raised the build from SDK 36 → 37.
  • Integrated label / receipt printers over WiFi & Bluetooth, supporting ZPL, ESC/POS and PDF_RAW_TCP raw printing.
  • Implemented Retrofit API calls with Hilt / Dagger dependency injection.
  • Integrated Firebase & Crashlytics, using bitwise flags for compact state handling.
  • Engineered virtual scroll with progressive data hydration — the full item list stays in memory while each item's lots, serials and barcodes are lazily enriched from the local DB on scroll (lazy, scroll-triggered prefetching rather than classic server pagination).
Java 17KotlinMaterial 2 & 3RetrofitHilt / DaggerFirebaseCrashlyticsWMSB2B

Full Skillset

Mobile Development

  • Kotlin (Android)
  • Swift (iOS)
  • Flutter
  • React Native
  • Jetpack Compose
  • MVVM Architecture
  • Retrofit

Backend & Languages

  • JavaScript
  • Java
  • C#
  • Ktor / REST APIs

Databases

  • SQL
  • SQLite
  • MongoDB (NoSQL)
  • Firebase / Firestore

Computer Vision

  • OpenCV (Haar Cascade)
  • Google ML Kit
  • Face Detection / Recognition

Tools & Version Control

  • Git
  • GitHub
  • GitLab
  • Crashlytics

Operating Systems

Windows

Primary desktop workstation for day-to-day development.

Linux

Solid hands-on experience across Ubuntu, Linux Mint and Arch — from Arch + XFCE at work to Mint + Cinnamon running my personal NAS server.

macOS

Working experience with macOS — not my daily driver, but comfortable using it professionally, including for native iOS development in Swift.

Other Projects

Resume

Certifications

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Location

Kozani, Greece