ONAT
AKDUMAN
Senior Android Developer crafting mobile and embedded experiences. Currently leading enterprise BLE asset-tracking at Cratus Technology — based in İzmir, Turkey.
- Android
- Kotlin
- BLE / NFC / MQTT
/About Me/
Senior Android Developer based in İzmir, Turkey, with 6+ years across Cratus Technology (enterprise BLE asset tracking), Rapsodo (sports performance), Huawei (HMS Core) and Talkido (assistive tech for children). I specialize in production Android apps that talk to real hardware — BLE, NFC, MQTT, mDNS, RTSP — and that scale cleanly with MVVM and Clean Architecture.
/What I Do/
EXPERTISE
01.
Android App Development
Production-grade Android applications written in Kotlin and Java — from MVP prototypes to long-lived consumer products on the Play Store.
- Kotlin & Java
- Jetpack & Coroutines
- Material Design
- Play Store releases
02.
Embedded & IoT
Mobile apps that talk to real hardware — Bluetooth Low Energy, NFC and serial port integrations for smart-home and assistive devices.
- BLE pairing & GATT
- NFC tag read / write
- Serial port (USB / RS232)
- Firmware companion apps
03.
Mobile Architecture
Scalable, testable Android codebases. MVVM and Clean Architecture, dependency injection, modularization and CI-ready pipelines.
- MVVM & Clean Architecture
- Hilt / Koin DI
- Multi-module projects
- Unit & UI testing
04.
Backend Integration
Wiring mobile clients to the cloud — REST APIs, real-time sync, auth and analytics. Firebase, Retrofit, OkHttp and beyond.
- Retrofit & OkHttp
- Firebase suite
- REST & WebSocket APIs
- OAuth & secure storage
/Selected Work/
PROJECTS
/Worked with/
CLIENTS & PARTNERS
/Career & Wins/
AWARDS
Career
01.
Senior Android Developer
Cratus Technology
2022 – Present
02.
Android Developer
Rapsodo Inc.
2021 – 2022
03.
Assistant Software Engineer
Huawei
2020 – 2021
04.
Android Developer
Talkido (Mental Segment)
2019 – 2020
05.
Startup Weekend Izmir
Winner — Happy Autistic Kids
2016
06.
Startup Weekend Food & Tech
Finalist
2016
Tech Stack
01.
Languages
Kotlin · Java
Native
02.
Mobile
Android SDK · Jetpack · Coroutines · MVVM
Daily
03.
IoT & Hardware
BLE/GATT · NFC · MQTT · mDNS · Matter
Specialty
04.
Media & Streaming
RTSP · FFmpeg · MediaRecorder
Production
05.
Backend
Firebase · Retrofit · OkHttp · HMS Core
Production
06.
Tools
Git · Gradle · CI/CD
Daily
/Kind words/
REVIEWS
“Onat brought an innovative approach to problem-solving and worked as an exceptional team player on our embedded systems collaboration. He moves fast without losing the engineering rigour.”
Ishak Alkuş
Embedded Systems Collaborator
“Shipped our Android app on time and built it to last. The architecture has held up through two major feature pushes without rework.”
Tech Lead
Healthtech Product
“Treats the BLE layer like a first-class part of the product. Pairing flows are stable, retries are sane, and the user never sees a stack trace.”
Product Manager
IoT Startup
“Easy to work with, asks the right questions early, and ships clean code reviews. We’d hire him again in a heartbeat.”
Engineering Manager
Mobile Team
/From the blog/