Ruslan Iskhakov, Developer in Kazan, Tatarstan, Russia
Ruslan is available for hire
Hire Ruslan

Ruslan Iskhakov

Verified Expert  in Engineering

Software Developer

Kazan, Tatarstan, Russia

Toptal member since June 26, 2019

Expertise
Tech FreelancingAndroidMultithreadingJavaAPIAndroid SDKiOSObjective-CXcodeSwiftKotlinGlideOAuth
Bio

Ruslan has hands-on experience with Android native apps development since 2011 and iOS native apps development since 2016. In projects he collaborates on, Ruslan aims to deliver reliable, scalable, and maintainable software in a short time. He loves to use the latest mobile development technologies in his work.

Portfolio

Self-employed
Objective-C, Swift, C++, C, Java, Kotlin, Interface Builder, iOS, Xcode, UIKit...
Toptal Client
iOS, Swift, Objective-C, Jenkins, User Interface (UI), Human Interface Design...
Toptal Clients
Swift, Xcode, CocoaPods, RxSwift, RealmSwift, Scrum, TestFlight...

Experience

  • Mobile Development - 9 years
  • Android - 8 years
  • iOS - 5 years
  • Unit Testing - 4 years
  • Swift - 3 years
  • Firebase - 3 years
  • Kotlin - 2 years
  • Android Jetpack - 1 year

Availability

Part-time

Preferred Environment

Postman, Git, Xcode, Android Studio, MacOS

The most amazing...

...project I've worked on was a home automation platform based on an Android app with intercom, security, alarm, video streaming, and other features.

Work Experience

Mobile Native Developer (Android, iOS)

2013 - PRESENT
Self-employed
  • Created a number of Android and iOS applications for various clients.
  • Helped clients to create and polish specifications for their projects.
  • Created automated Unit and E2E tests and deployed mobile apps for testing.
  • Published mobile apps for clients in Google Play and App Store.
Technologies: Objective-C, Swift, C++, C, Java, Kotlin, Interface Builder, iOS, Xcode, UIKit, Figma, REST APIs, Databases, Software Architecture, Geolocation, Embedded C++, Embedded C, Low-level Programming, Image Manipulation, Grand Central Dispatch, ASCII, MVC Design, Native Mobile Apps, Android Development, Information Technology, REST, Cryptography, Refactoring, Networking, Core Data, Mobile App Development, Mobile UI, Android Architecture, Mobile Development, Android API, Android SDK, Android Studio, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, Algorithms, SQL, SQLite, Google Maps API, Swift 4, Human Interface Design, UI Design, User Experience (UX), UX Design, Sockets, Real-time Communication (RTC)

iOS Developer with Objective-C and Swift

2021 - 2022
Toptal Client
  • Attended online team standups for scrum sprints planning, grooming, and retrospective.
  • Discussed the best ways of task delivery with other team members.
  • Fixed bugs for an iOS app reported by the QA team, enhanced the app with new features, submitted code changes for review and QA testing.
  • Participated in code review for pull requests created by other developers.
  • Attended online discussion of iOS app features with other not IT staff from the client company.
Technologies: iOS, Swift, Objective-C, Jenkins, User Interface (UI), Human Interface Design, UI Design, User Experience (UX), UX Design

Swift iOS Developer

2020 - 2021
Toptal Clients
  • Created a base iOS application architecture and integrated third-party frameworks providing key app functionality.
  • Implemented the application UI and features as per design and Jira tasks. Submitted implemented features in TestFlight builds to the QA.
  • Fixed and resolved bugs and issues reported by QA that were discovered during the development process.
  • Attended daily team meetings and discussed details and possible approaches of implementation for application features together with other team members.
Technologies: Swift, Xcode, CocoaPods, RxSwift, RealmSwift, Scrum, TestFlight, VIPER Architecture, Mobile Architecture, REST APIs, UIKit, AVFoundation, SDWebImage, JSON, Jira, Interface Builder, iOS, Figma, Databases, Software Architecture, Security, Grand Central Dispatch, Swift 5, ASCII, Native Mobile Apps, Information Technology, REST, Realm, Refactoring, Networking, Mobile App Development, Mobile UI, Mobile Development, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, Human Interface Design, UI Design, User Experience (UX), UX Design

Swift iOS Developer

2020 - 2020
Freelance Work
  • Migrated an iOS application architecture to Viper in order to enable easy enhancement of the app's features.
  • Implemented new and improved existing features in accordance with UI/UX design.
  • Fixed crashes, UI/UX bugs, and issues found during app testing.
  • Implemented new elements of the UI using the SwiftUI framework.
Technologies: Figma, Xcode, CocoaPods, Carthage, SDWebImage, Alamofire, Combine, RxSwift, UIKit, SwiftUI, Swift, Interface Builder, iOS, REST APIs, Databases, Software Architecture, Image Manipulation, Grand Central Dispatch, MVC Design, Native Mobile Apps, Information Technology, REST, Refactoring, Networking, Mobile App Development, Mobile UI, Mobile Development, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, Algorithms, Human Interface Design, UI Design, User Experience (UX), UX Design

Swift Mobile Developer

2019 - 2020
Engagement via Toptal
  • Created an iOS project baed on VIPER architecture pattern.
  • Implemented a key features of iOS app based on the same Android application.
  • Integrated Firebase Auth, Storage and Firestore using CocoaPods framework.
  • Integrated some helpful libraries using CocoaPods.
  • Integrated SDWebImage library to load image files from Firebase Storage.
Technologies: Firebase, CocoaPods, Swift, Interface Builder, iOS, Xcode, UIKit, REST APIs, Databases, Software Architecture, Geolocation, Image Manipulation, Grand Central Dispatch, Swift 5, Native Mobile Apps, Information Technology, REST, Refactoring, Networking, Mobile App Development, Mobile UI, Mobile Development, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, Human Interface Design, UI Design, User Experience (UX), UX Design

Android Developer

2019 - 2019
NDA (via Toptal)
  • Enhanced an Android app with new features.
  • Migrated the project to MVVM architecture pattern.
  • Created Unit Tests for the project.
  • Applied an updated UI design.
Technologies: Retrofit 2, Dagger 2, Unit Testing, Model View ViewModel (MVVM), Kotlin, Android, REST APIs, Databases, Software Architecture, Native Mobile Apps, Android Development, Information Technology, REST, Refactoring, Networking, Mobile App Development, Mobile UI, Android Architecture, Mobile Development, Android API, Android SDK, Android Studio, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, Human Interface Design, UI Design, User Experience (UX), UX Design

Mobile Developer

2018 - 2019
NDA
  • Created an Android version of the app from scratch based on the MVP architecture pattern.
  • Deployed content data files on Firebase Cloud Storage.
  • Created a custom logic to check for data content updates availability and to download and to cache the content files from Firebase Cloud Storage.
  • Created Unit tests and Espresso UI tests.
  • Conducted migration of an iOS app with static content files to a model of data files dynamically downloaded and cached from Firebase Cloud Storage.
  • Conducted migration of the iOS app to MVP architecture pattern.
  • Set up push notifications for both Android and iOS apps.
Technologies: Push Notifications, Espresso, Unit, Firebase, Swift, Java, iOS, Android, Xcode, UIKit, REST APIs, Databases, Software Architecture, Grand Central Dispatch, Native Mobile Apps, Android Development, Information Technology, REST, Cryptography, Refactoring, Networking, Mobile App Development, Mobile UI, Mobile Development, Android API, Android SDK, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, Human Interface Design, UI Design, User Experience (UX), UX Design

Android Developer

2018 - 2019
NDA
  • Implemented MVP architecture pattern for the project.
  • Implemented UI layouts, icons, and drawables in accordance with UI design.
  • Implemented requests to a REST API.
  • Created a local SQLite scheme DB to cache all the data from REST API.
  • Implemented a custom app screens navigation tree logic with programmatic transitions to a target screen within the tree.
Technologies: Retrofit 2, RxJava 2, Unit Testing, Java, Android, CI/CD Pipelines, REST APIs, Databases, Software Architecture, TCP/IP, Native Mobile Apps, Android Development, Information Technology, REST, Protobuf, Refactoring, Networking, Mobile App Development, Mobile UI, Android Architecture, Mobile Development, Android API, Android SDK, Android Studio, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, Algorithms, Human Interface Design, Material Design, Material UI, UI Design, User Experience (UX), UX Design

Mobile Developer

2017 - 2018
NDA
  • Created both iOS and Android tween native applications having the same purposes.
  • Deployed a content files on Firebase Cloud Storage.
  • Implemented a parsing of MS Excel spreadsheet file to be displayed for the user.
Technologies: Microsoft Excel, Firebase, Kotlin, Java, iOS, Android, Interface Builder, Swift, Objective-C, Xcode, UIKit, REST APIs, Software Architecture, Geolocation, TCP/IP, Native Mobile Apps, Android Development, Information Technology, REST, Refactoring, Networking, Mobile App Development, Mobile UI, Mobile Development, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, Human Interface Design, UI Design, User Experience (UX), UX Design

Android Developer

2015 - 2018
NDA
  • Refactored a legacy codebase in accordance with the latest Android development best practices.
  • Refactored an SQLite DB in order to keep all the cached data more consistent.
  • Implemented a custom digital rights management module.
  • Integrated Facebook SDK and Twitter SDK.
  • Conducted a migration of the app to MVP architecture pattern.
  • Created Unit tests and automatic e2e tests using Espresso framework.
Technologies: Retrofit 2, Unit Testing, Java, Android NDK, REST APIs, Software Architecture, Security, Geolocation, Connectivity, WiFi, Stripe, Native Mobile Apps, Android Development, Information Technology, REST, Cryptography, Refactoring, Networking, Mobile App Development, Mobile UI, Android Architecture, Mobile Development, Android API, Android Studio, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, Algorithms, SQLite, Human Interface Design, UI Design, User Experience (UX), UX Design

Mobile Native Developer (Android)

2011 - 2016
Self-employed
  • Created a number of Android applications for various clients.
  • Helped clients to create and to polish specifications for their projects.
  • Created an automated Unit and e2e tests.
  • Deployed the mobile apps for testing.
  • Published the mobile apps for clients in Google Play.
Technologies: C++, C, Java, REST APIs, Software Architecture, Geolocation, Image Manipulation, ASCII, Native Mobile Apps, Android Development, Information Technology, REST, Refactoring, Networking, Mobile App Development, Mobile UI, Mobile Development, Android SDK, Android Studio, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, SQL, Human Interface Design, UI Design, User Experience (UX), UX Design

Android Developer

2014 - 2014
NDA
  • Integrated libraries provided by a client to fetch data from custom hardware and to control the custom hardware.
  • Implemented a software module to enable app instances running on a number of Android devices within the same WLAN to discover, identify and to communicate with each other over a TCP connection.
  • Completely developed the Android app from scratch to production.
  • Implemented audio/video streaming from the microphone and camera of a device to another device running the same app.
Technologies: Java, Android, REST APIs, Software Architecture, Bluetooth, Image Manipulation, ASCII, Native Mobile Apps, Android Development, Information Technology, REST, Refactoring, Mobile App Development, Mobile UI, Android Architecture, Mobile Development, Android API, Android SDK, Android Studio, App UX, User Interface (UI), App UI, Mobile App UI, GitFlow, Algorithms, SQLite, Human Interface Design, UI Design, User Experience (UX), UX Design

Lead Software Development Engineer in Area of Industrial Automation

2009 - 2011
OZNA Engineering Ltd., Ufa city, Russian Federation
  • Created and launched a software module for industry automatization.
Technologies: Databases, Software Architecture, User Experience (UX), ASCII, Modbus Protocol, TCP/IP, Information Technology, Human Interface Design, UI Design

Software Development Engineer

2007 - 2009
SIB bank, Ufa City, Russian Federation
  • Automated bank operations in the area of credit loans.
  • Developed, deployed, and maintained an application software to automate bank loans processing for individuals.
  • Created, deployed, and maintained an application software for mortgage loans.
  • Built, deployed, and maintained an application software to process monthly payments from the state pension fund to accounts of retired individuals.
  • Created, deployed, and maintained an application software to collect loans history of entities and to create an entity credit history report on demand.
Technologies: Visual FoxPro, Databases, Software Architecture, User Experience (UX), ASCII, Information Technology, Human Interface Design, UI Design

Software Development Engineer in Area of Embedded Devices

2004 - 2007
"Diner" JSC, Ufa City, Russian Federation
  • Created embedded software for a number of oil-industry devices.
  • Collaborated with the electrical circuitry design process as an MCU expert.
  • Created and implemented a migration plan to one of the latest ARM MCU families.
Technologies: Embedded Software, MCU, Assembler, C++, C, Embedded C++, Embedded C, Low-level Programming, ASCII, ARM Embedded, AVR (8-bit MCU), STM32, Modbus Protocol, Information Technology, Refactoring

Experience

Android and iOS Mobile Apps | NDA

Developed a number of Android and iOS native mobile apps for various clients, companies, and startups using the latest and most popular technologies. Many of those apps were developed under NDA protection.

Radio Relax FM

My own iOS application to play an audio stream broadcasted by an online radio station created with Objective-C.

This is an open-source project and it is available at github.com/RuslanIskhakov/iOS-RadioRelaxFM.

Magic Cube iOS App

https://github.com/RuslanIskhakov/Magic-Cube
A 3D model of Magic Cube (Rubik's cube) created using Swift, MVP, Scene Kit, and Unit Tests. The cube can be scrambled and restored by the user with finger touch; the size of the cube can be hardcoded with any values starting from two.

Education

1999 - 2003

Candidate of Technical Sciences Degree in Elements and Facilities of Computers and Control Systems

Ufa State Aviation Technical University - Ufa city, Russian Federation

1994 - 1998

Bachelor's Degree in Information And Measuring Devices And Technologies

Ufa State Aviation Technical University - Ufa city, Russian Federation

Skills

Libraries/APIs

Android API, RxSwift, Retrofit 2, Facebook API, X (formerly Twitter) API, Camera API, Android Architecture Components, REST APIs, Picasso, RxJava 2, FFmpeg, Jsoup, Google Maps API, Google Places API, Facebook SDK, X (formerly Twitter) SDK, CocoaPods, Android OpenGL, Stripe, Sockets, Alamofire, SDWebImage, Core Audio, OpenGL ES, Stripe API, Protobuf

Tools

Android Studio, Xcode, Interface Builder, Android NDK, Git, SourceTree, Postman, Android Jetpack, Gradle, Apple Push Notifications, Facebook Android SDK, X (formerly Twitter) Android SDK, Travis CI, TestFlight, GitHub, Bitbucket, Subversion (SVN), Slack, Jira, Redmine, Asana, Crashlytics, Firebase Cloud Messaging (FCM), Grand Central Dispatch, Microsoft Excel, Figma, ExoPlayer, Photoshop 2018, *nux Shells, Firebase Analytics, Jenkins

Languages

Kotlin, Java, Swift, Objective-C, C, Assembler, XML, SQL, Swift 5, Swift 4, Visual FoxPro, C++, JavaScript, HTML, GraphQL, Embedded C++, Embedded C

Frameworks

Android SDK, Swagger, SwiftUI, Cocoa Touch, Dagger 2, Glide, OAuth 2, Core Data, iOS SceneKit, Espresso, JNI, Combine, UIKit, Robotium, RealmSwift, Material UI

Paradigms

Mobile Development, Unit Testing, Model View Presenter (MVP), Model View ViewModel (MVVM), Object-oriented Programming (OOP), MVC Design, Refactoring, UI Design, E2E Testing, Continuous Deployment, Continuous Delivery (CD), Continuous Integration (CI), REST, Human Interface Design, UX Design, VIPER Architecture, Scrum, RESTful Development

Platforms

Android, iOS, Oracle, Firebase, Music Streaming, TestFairy, AVR (8-bit MCU), STM32, MacOS

Storage

SQLite, JSON, Firebase Realtime Database, Databases, Realm

Other

Mobile App Development, Mobile Architecture, User Interface (UI), Mobile App UI, Mobile Apps, Mobile UX, Mobile UI, Android Architecture, Multithreading, ASCII, Modbus Protocol, Native Mobile Apps, Android Development, Information Technology, Networking, GitFlow, Audio, APIs, Android Emulators, App UX, App UI, REST API Clients, WebSockets, Android Data Binding, Push Notifications, Location Services, Third-party Libraries, Third-party SDK Integration, Audio Processing, Audio Streaming, Real-time Streaming, Mobile Streaming, Video Streaming, Images, GCD, Data Structures, Algorithms, Slack App, CI/CD Pipelines, Software Architecture, Security, Geolocation, Low-level Programming, Image Manipulation, ARM Embedded, TCP/IP, User Experience (UX), Real-time Communication (RTC), MCU, Embedded Software, Unit, Video Encoding, In-app Purchases, RSS Feeds, Carthage, WiFi Direct, AVFoundation, Bluetooth, Connectivity, WiFi, Cryptography, Coroutines, Material Design

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

1

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring