Hire Mobile App Developer

Mobile App
Upstaff provides access to expert mobile developers with proven experience in native (iOS & Android) and cross-platform (React Native, Flutter) development. Our team helps you engage skilled professionals to build scalable, high-performance apps for e-commerce, fintech, gaming, IoT, and more. Trust us for reliable, tailored solutions that deliver exceptional user experiences.
Mobile App
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Android 6yr.
Java
Kotlin
Android Jetpack
ButterKnife
Crashlytics
Dagger
DataBinding
Glide
Gson
Hilt
Koin
OSMdroid
Retrofit
Room (Android Jetpack)
ViewBinding
Dagger
JSON
Jsoup
okHttp
Firebase
ObjectBox
SQLite
Firebase Cloud Messaging
Google Cloud Messaging
Android Jetpack
BitBucket
Git
GitLab
SVN
Clean Architecture
MVC (Model-view-controller pattern)
MVVM
SOLID
Firebase
Google Maps API
RESTful API
Retrofit
MVP
WebSockets
...

- Senior Android Engineer with 6+ years of commercial experience and strong organizational skills. - Proficient in Android development using Java, Kotlin, and libraries like Retrofit and Room. - Expert in methodologies like MVC, MVVM, Clean Architecture, and SOLID principles. - Comfortable working with REST API, version control tools like Git, and project management through MVP. - Upper-Intermediate English - Available ASAP

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Seniority Senior (5-10 years)
Location Ukraine
Android
Android Studio
Dagger2
Ktor
Dagger2
Firebase
OpenCV
Android Studio
Fastlane
Firebase
FigJam
Figma
Jenkins
Jira
Miro
Slack
MVVM
MVI (Model-View-Intent)
Teamwork
...

- I am a self-taught Android developer with a passion for building scalable architecture and writing easily maintainable (deletable) code. - I am a big fan of DI frameworks like Dagger, Anvil, or Hilt. - I build apps out of passion outside of working hours, but lately, I have been exploring Ktor on the backend side and working on fully Compose Android applications. - From time to time, I also like to tinker with Figma. - I am passionate about the latest tech, hardware and security.

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Seniority Senior (5-10 years)
Location Ukraine
Android
Java
Kotlin
Android SDK
Android Studio
Crashlytics
Dagger
Jetpack Compose
Kotlin Coroutines
Retrofit
Room (Android Jetpack)
Dagger
okHttp
RxJava
Spring
Kibana
Firebase
Agile
Design patterns
SOLID
Android SDK
API
GraphQL
Retrofit
Swagger
Android SDK
Android Studio
JetPack
Atlassian Confluence
Jira
Miro
Slack
BitBucket
Git
GitLab
Charles Proxy
JUnit
NUnit
Postman
Citrix
Firebase
Figma
InVision
UX
iOS
Product Management
Sonarqube
...

- As an accomplished Android Engineer with six years of experience, I have a proven track record of developing high-quality Android applications. My passion lies in diving deep into the core development of a project and leaving my technical mark. I am eager to keep pace with the rapidly changing mobile world, and I embrace challenges with enthusiasm - My journey as a Software Engineer began during high school, and I have continued to grow and develop my skills ever since. I am dedicated to working hard and driving innovation in all of my projects. I am also a personable and friendly team player, and I thrive on the opportunity to collaborate with others and meet new people - Overall, I am committed to delivering exceptional results and making a positive impact on any project I work on - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Ukraine
Java
Kotlin
Android
Architecture Components
Cicerone
Data binding
Glide
Google Play services
Koin
Kotlin Coroutines
OSMdroid
Retrofit
Retrofit2
Room (Android Jetpack)
okHttp
RxJava2
Firebase
Google Services
Atlassian Confluence
Jira
BitBucket
Git
Clean Architecture
MVVM
SOLID
Firebase
HTTP
HTTPS
MVP
Postman
RESTful API
Retrofit
Swagger
...

- Experienced Android Engineer with 6+ years in Java and Kotlin app development. - Proficient in Android development frameworks like Retrofit and Room (Android Jetpack). - Expertise in Clean Architecture, SOLID, MVVM principles, REST API, and HTTP. - Skilled in project management using Atlassian JIRA, Confluence, and Agile methodologies. - Upper intermediate English - Available ASAP

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Seniority Middle (3-5 years)
Location Rivne, Ukraine
Android 8yr.
Kotlin 4yr.
Coil
Kotlin Coroutines
iOS
MVVM
NUnit
Zeplin
PWA
...

- 8+ years of experience with Android Development - 4+ years of experience with Kotlin - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Portugal
Android 7yr.
Android SDK 7yr.
Java 7yr.
Kotlin 7yr.
Cicerone 7yr.
Crashlytics 7yr.
Dagger 7yr.
Hilt 7yr.
Mockito 7yr.
Retrofit 7yr.
Room (Android Jetpack) 7yr.
Dagger 7yr.
RxJava 7yr.
Realm 7yr.
Firebase Cloud Messaging 7yr.
Atlassian Trello 7yr.
Jira 7yr.
Clean Architecture 7yr.
Kanban 7yr.
MVVM 7yr.
Waterfall 7yr.
Google Maps API 7yr.
Retrofit 7yr.
Linux 7yr.
Windows 7yr.
Mockito 7yr.
WebSockets 7yr.
Firebase Analytics 7yr.
Navigation 7yr.
Jetpack Compose 1yr.
Architecture Components
Dagger2
Data binding
DataBinding
Glide
Gson
Kotlin Coroutines
leakcanary
Dagger2
RxJava2
Firebase
BitBucket
Git
MVC (Model-view-controller pattern)
Scrum
Facebook API
Facebook SDK
Facebook SDK
Figma
Firebase
MVP
Sentry
sockets
Applanga
Cicerone navigation
PlacesSDK
Protobuf
...

- Over 7 years of commercial experience in IT as an Android Developer; - Proficient in Java and Kotlin programming languages; - Strong knowledge of Object-Oriented Programming (OOP) principles; - Experienced in using Design patterns such as MVP and MVVM; - Skilled in using Android SDK and various libraries/frameworks including RxJava, Jetpack Compose, Dagger, Hilt, Room, Navigation, Google Maps, Firebase Analytics, Firebase Crashlytics, and Firebase Cloud Messaging; - Familiar with Clean Architecture and Retrofit for building robust and scalable applications; - Proficient in using source control systems like GIT and tracking systems like Jira and Trello; - Experienced in Agile development methodologies such as SCRUM and Kanban; - Upper-Intermediate level of spoken and written English; - Successfully delivered projects in various domains including in-store and online shopping, retail and distribution, taxi services, sports, and job search; - Strong attention to detail, logical thinking, and result-oriented mindset.

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Seniority Senior (5-10 years)
Location Germany
Android
Java
Kotlin
Android SDK
Crashlytics
Kotlin Coroutines
Retrofit
Agile
MVVM
Android SDK
API
Kotlin Flow
Retrofit
Android SDK
JetPack
Bamboo
BitBucket
GitHub
...

- 4 years of commercial experience with Kotlin - Intermediate English

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Seniority Middle (3-5 years)
Location Tashkent, Uzbekistan
Android
C
C++
Java
JavaScript
Kotlin
Python
Android SDK
Material UI
Firebase
Firebase Realtime Database
Android SDK
Android SDK
Atlassian Trello
Jira
Redmine
Clean Architecture
Design patterns
Kanban
MVC (Model-view-controller pattern)
MVVM
Scrum
Waterfall
Firebase
Git
SVN
Linux
macOS
Windows
MVP
...

- 12 years of commercial experience in IT - Experience in developing applications using Kotlin, Java - Excellent knowledge of OOP - Experience in using Design patterns (MVVM, MVI, MVP) - Experience in using SQL/NoSQL databases - Good logical thinking, hard-working, self-learning, result oriented - Good attention to details. - Upper-Intermediate English - Availability starting from ASAP

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Seniority Senior (5-10 years)
Location Spain
Android
Kotlin
Java
CameraX
Dagger2
DataBinding
Hilt
Jetpack Compose
Koin
Kotlin Coroutines
LiveData
Moshi
Retrofit
Room (Android Jetpack)
Dagger2
RxJava
Firebase
GreenDao
Realm
Clean Architecture
MVVM
Facebook API
Google API
GraphQL
Kotlin Flow
Retrofit
Firebase
Gradle
Linux
macOS
Windows
MVP
Postman
WebRTC
XMPP
Box2D
Multithreading
MVI (Model-View-Intent)
...

- 7+ years of commercial experience in IT - Experience in developing applications using Java, Kotlin - Excellent knowledge in OOP - Experience in using Design patterns (MVP, MVVM) - Experience in using SQLite - Good logical thinking, hard-working, self-learning, result oriented - Good attention to details. - Upper-Intermediate English - Availability starting from 01/08/2023

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Seniority Senior (5-10 years)
Location Lviv, Ukraine

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Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager
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Accenture
SpiralScout
Valtech
Unisoft
Diceus
Ciklum
Infopulse
Adidas
Proxet

Want to hire Mobile developer? Then you should know!

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Quick Facts about Mobile Development:

  • The Original Pocket Sorcery (1993)
    You wanted Angry Birds? 
  • App Store Gold Rush (2008)
  • SMS: The Prehistoric App
    And thus, texting was born. 

  • For fun.” 
  • Shazam’s Magic Ears (2002)
    WHAT. IS. THIS. Dark sorcery? 

  • Enter WeChat, the super app. WeChat’s got you. 
  • Tetris on a Brick (1994)
  • NASA’s PalmPilot Hack (1998)
    Why? Your smartphone? 
  • Symbian (1997)
  • Pokémon GO’s Augmented Chaos (2016)
  • BONUS: Instagram’s Insane Launch (2010)
    Now? 
  • Final Words of Madness
    What’s next? Apps that predict your thoughts? Phones that cook dinner? 

What are top Mobile instruments and tools?

  • Android Studio: Official IDE for Android app development
  • Xcode: Apple’s IDE for iOS app development
  • Appium: Automation tool for mobile apps
  • Charles Proxy: Web debugging proxy tool
  • Postman: API development tool
  • TestFlight: Beta testing tool by Apple
Table of Contents

Talk to Our Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager

Top Use Projects For Mobile App Developers:

These are the most impactful and technically demanding domains where mobile developers are very good at creating innovations for all sectors.

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