Oleksii K.
KyivUkraine
100% Job Success
Top Rated Plus

Senior iOS, Android & full-stack developer.

Hello. Shortly my name is Olex. I’m mobile developer with more than 7 years of experience in the field of mobile development and more than 10 years of programming in general. I believe that my strongest skill is making things done. How? Responsibility and creativity, thinking about whole the project, not only codebase. And I like to finish my work, finish applications or features. I always think about my clients needs for first even if it's not best for me. I also care about end-user experience and always share my ideas or doubts about a project I make. I'm honest and fair. Listed below are my experience and skills: I work mostly as front-end mobile application developer on platforms: • iOS, WatchOS, • Android, • Hybrid. I work as back-end developer using Firebase to support mobile application development. I use programming languages as follows: • Swift, Objective-C - as native iOS development, • Kotlin, Java - as native Android development, • Dart - for hybrid development. I worked with most of mobile technologies and frameworks: • UI/UX - SwiftUI, UIKit, WatchKit, Lottie files, • Image creation, changing/processing - CGGraphics, CGAnimation, • Working with data - CoreData, Keychain, • Video creation, changing/processing (on the fly as well), streaming - AVFoundation, WebRTC SDK, • Device capabilities - Bluetooth / BLE, Location, Apple maps, Google maps, Push notifications, Network, tunneling, traffic management, HealthKit, • Working with payments - In-app purchases, Apple Pay, Shopify, Stripe, • Client-server communication - RESTful API, GraphQL, XML, JSON, Websockets, Sockets, Firebase SDK, AWS, • AI - MLKit, ChatGPT API I work with many professional tools, but mostly with: • Xcode & Cocoapods - iOS development tools, • Android Studio & Gradle - for Android development, • Visual Studio Code - for Flutter hybrid development • Git - version control. • Jira, Redmine, Trello, Slack, Bitbucket, Gitlab - as team tools. I have experience of Firebase back-end development with Javascript. I understand imperative and declarative, OOP principles of programming, a lot of architecture patterns, like MVC, MVVM, MVP etc. I have experience of publishing applications in both Appstore & Google Play. I have experience of team leading and project management.

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Skills

  • Bluetooth
  • API Integration
  • WebRTC
  • watchOS
  • Problem Solving
  • ChatGPT
  • AV Foundation

Get started working with Oleksii quickly with these predefined projects.

Get started working with Oleksii quickly with these predefined projects.

You will get an amazing AI application that can support chat with users

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You will get a fabulous Wallpaper catalog iOS application

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