Senior Android Developer · Open to new ideas

Hi, I'm Mohammad 👋

Senior Android Developer in Istanbul with 10+ years building user-focused mobile apps — the last several deep in Kotlin & Android. Primary developer on the Istanbul Airport app, with 15+ shipped apps behind me — and an indie maker who publishes his own products on Google Play. A natural problem-fixer who turns complexity into clean, high-quality solutions.

View my work → Get in touch
10+
Years shipping mobile
15+
Apps shipped for companies
3
Solo apps on Google Play
5
Technical articles
About me

Engineer who sweats the details

A mobile application developer with 10+ years building apps — now specialized in Android with Kotlin. A self-learner with a curious, analytical mindset.

My passion for building user-focused tools began with simple widgets and evolved into creating full-scale apps that solve real problems and enhance everyday life. I'm driven by a constant desire to understand how things work — and how they can be improved.

Today I'm a Senior Android Developer at Appcent, serving as the primary Android developer on the official Istanbul Airport app. My work spans BLE indoor solutions, performance optimization, payment & IAP integrations, and multilingual accessibility. On the side I design, build, and publish my own products.

I thrive in collaborative environments and take pride in being a supportive, reliable team player — a natural problem-fixer who enjoys designing clean solutions and delivering high-quality features.

Portrait of Mohammad Khakpaki
Toolkit

Skills & technologies

The stack I reach for to design, build, and ship reliable mobile software — across Android, cross-platform, and games.

Core stack

Kotlin
Java
Android
Compose
Android Studio
Gradle
Firebase
SQLite
JUnit
Unity
C#
Swift
Git
GitHub
GitLab
Azure DevOps

🧰Also in my toolbox

Jetpack ComposeCoroutinesFlowMVVMClean ArchitectureKotlin MultiplatformNavigation ComponentViewBindingHiltDagger2RetrofitOkHttpRoomREST APIsFirebase Auth · Firestore · Crashlytics · AnalyticsBluetooth Low Energy (BLE)IoTIndoor PositioningReal-Time SyncMockKLeakCanaryProGuardCI/CD · YAMLAgile · Scrum · KanbanLocalizationOKR Coaching
Selected work

Apps I've built & shipped

Personal products taken end-to-end — design, engineering, and release on Google Play.

Mediqation app icon
● Live

Mediqation

Pill Reminder · Solo Android App
★ 4.5·10K+ downloads

A lightweight, fully offline app (under 10 MB) that helps users manage and track medication schedules. Built solo in Kotlin with MVVM & Room, flexible reminders with snooze, and local notifications that work without internet.

KotlinMVVMRoomJetpackFirebase
dodast app icon
✦ New● Live

dodast

Local-First Media Player · Kotlin Multiplatform

Plays the music and videos you already own, finds their artwork, and keeps playback in sync across every device in your home — without your library ever leaving your device.

Kotlin MultiplatformComposeReal-Time SyncNetworking
Jarful app icon
✦ New● Live

Jarful

Fruit Merge Puzzle · Unity Game

A cozy, physics-driven fruit-merge puzzle. Drop and combine fruit to climb the chain — with satisfying merges, juicy feedback, and progressively trickier jars to fill.

UnityC#FirebaseAndroid
Career

Experience

Building production mobile software since 2016 — from startups to airport-scale platforms.

✈ Flagship Project

Istanbul Airport App

Primary Android Developer · Appcent · May 2023 – Present
★ 4.4·500K+ downloads·2.65K reviews

Primary Android developer on the official app for one of the world's busiest airports — collaborating with design and business teams to translate real passenger needs into well-crafted, scalable features.

🧭 Track My Children
Led development of real-time indoor child tracking using BLE and iTags — monitoring distance from the phone.
🧳 Travel & Valet
Built key features including the travel list and valet delivery selection, improving user experience and operational flow.
🚙 Buggy Management
Created an internal app to manage airport buggy vehicles and validate services via QR-code scanning.
📉 Stability & OKRs
Cut crash rates via QA + Firebase Crashlytics, and coached a 9-person team to 80% goal completion — top team that cycle.

Senior Android Developer

· AppcentIstanbulMay 2023 – Present

Primary Android developer for the Istanbul Airport mobile application.

  • Translated user needs into well-crafted, scalable Android features with design & business teams.
  • Led the Track My Children feature using BLE and iTags for real-time indoor child tracking.
  • Built the travel list, valet delivery selection, and an internal QR-based buggy-management app.
  • Improved stability via QA collaboration and Firebase Crashlytics integration.
  • OKR coach for a 9-person team, guiding them to 80% goal completion (top team that cycle).

Android Developer

· PoiLabsIstanbulMay 2021 – May 2023

Android SDK & R&D for indoor navigation and IoT.

  • Designed a CI/CD pipeline on Azure DevOps, cutting release overhead with automated beta deployments.
  • Developed Android SDKs for indoor positioning with 5-meter accuracy using BLE, magnetometer & motion sensors.
  • Built IoT apps with Bluetooth connectivity across retail and smart spaces.
  • Raised test coverage with JUnit, MockK & Robolectric; resolved memory leaks across modules.

Earlier roles

Iran2016 – 2021

Where I cut my teeth — Android & iOS across startups and product teams, from full-stack founder to Telegram Farsi and hotel-management apps.

  • Android Developer — Oddrun, Tehran 2020–2021
  • Mobile App Developer — Oddrun, Tehran 2018–2019
  • Software Developer — IPAAM, Tehran 2017–2018
  • Full-Stack Developer / Founder — Simorgh (Startup), Tabriz 2016–2017

🗣️Languages

EnglishFluent
TurkishNative
AzerbaijaniNative
PersianNative

🎨Off the clock

Turns out I'm happiest making things with my hands. A photo that finally catches the light. An espresso pulled just right. A pizza dough I've spent years quietly perfecting. Different crafts, same itch — keep chasing it until it feels right.

📷 Photography☕ Espresso🍕 Homemade pizza
Latte art espresso — one of my coffee pours
Photography

Through my lens

Istanbul got under my skin and never left. On my days off you'll find me wandering it with nothing but the phone in my pocket — chasing golden hour on the Bosphorus, getting lost in old streets, and stopping dead whenever the light does something worth keeping. No fancy gear, no plan. Just a city I can't stop looking at.

See more on Instagram ↗
Publications

Writing & articles

Sharing what I learn — deep dives on Android, accessibility, and the craft of shipping software.

Let's collaborate

Have an idea? Let's build it.

I'm always open to collaborating on innovative projects, contributing to open source, or discussing new ideas. Feel free to reach out.

✉ Email me Connect on LinkedIn