Hi, I am Yurii Kobets or just Yuri.  I am a software engineer, developing high traffic, scalable products. 10 years of experience in full-stack, backend, front-end applications development.

Contact: Twitter, LinkedIn, Github

Throughout my career, I have developed numerous projects, including social networks, cybersecurity medical applications, travel, entertainment, financial, and enterprise software. I developed a Booking.com travel application with millions of users and solutions for tracking millions of vehicles via GPS.

My knowledge and experience:  

Front-end:

  • React.js,  React Native
  • TypeScript
  • Next.js

Backend:

  • Node.js, Express.js, Nest.js
  • Python, FastAPI, Flask, Django
  • SQL, Postgres, MongoDB
  • K8S, AWS, GCP

Mobile:  

  • React Native, Expo
  • Flutter, Dart
  • Swift, Objective-C, C/C++  
  • iOS SDK  
  • IDE: Xcode, AppCode  
  • Cocoa Touch frameworks: UIKit, CoreFoundation, AVFoundation, CoreGraphics, CoreLocation, MapKit, AddressBook, EventKit, MediaPlayer, MessageUI, StoreKit, Core Audio, Core Data, Reactive  
  • JavaScript, React Native

AI tools:

  • LLM, Cursor, CoPilot

Data:

  • MySQL, PostgreSQL, SQLite
  • MongoDB
  • BigQuery
  • Hadoop, Hive

Hardware:  

  • Bluetooth 2 - 4, BLE, wearable devices integration (healthcare, smartphones)
  • Printers (AirPrint, Google Cloud Print)    

Concepts: OOP, OOD, Unit Tests, Test Driven Development  

Methodologies: Agile, Scrum, Kanban, Waterfall  

Version control software: git, svn  

Companies I worked for:Verizon Connect (Fleetmatics), Booking.com

Projects:

Booking.com application https://goo.gl/YhQzT9

  • Created in-app marketing channels: banners, pop-up systems to promote deals and rewards in the product and drive channel shift in marketing
  • Lead feature development in marketing department
  • Created and integrated API system of delivering rewards to users. Integration with machine learning for proposing users optimal reward. Very scalable solution delivering campaigns for millions of users
  • Created post-booking iOS infrastructure: canceling, modifying booking, persistence
  • Created a system for collection user reviews
  • The full cycle of development: architecture, coding, testing and release of iOS application
  • Feature development, collecting requirements, data analysis. Backend, API
  • A/B tests, integration tests
  • Hadoop/Hive queries, Business intelligence
  • Technologies: Swift, Objective-C, iOS SDK, UIKit, Python, Perl, Java, Core Data, JavaScript, React Native

Fleetmatics REVEAL Manager App

  • Developing of core features, Application refactoring using CLEAN architecture Improved the app stability, crash-free users rate is 99.9%
  • Prototyping and R&D  

Used technologies: Android SDK, REST API, Google Maps, Unit testing    

Developed iOS application Fleetmatics REVEAL Field App

Used technologies: iOS, Google Maps, REST API, Unit testing  

HealthCare project. Management of patients' surveys  

Projects and main responsibilities:

  • Created an internal framework: networking, database, encryption  
  • Continuous Integration  
  • API integration  

The virtual healthcare service  Online consultation system.  

  • the authentication with REST API and Facebook OAuth
  • Javascript bridge for communication with the web application
  • Core Data persistence layer
  • Real­time video communication integration

Used technologies: Core Data, multithreading, UIKit, JavaScript Сore, REST API, AFNetworking, APNS, Web­RTC