Alexander K.

Alexander K.

React-udvikler

Toppræstation 10/10
Ukraine
Betroet medlem siden 2019
15 års erfaring

I de sidste seks år har han primært arbejdet med React og React Native. Han har også bredt kendskab til arkitekturstile, teknologier, domæner og metoder til softwareudvikling, da han har arbejdet med JS-baserede frameworks i mere end 11 år. Alexander arbejdede endda på at udvikle React Native, og han har lavet kodestykker til næsten alle iPhones verden over.

Nogle af hans mere interessante projekter omfatter et avanceret jobsøgningsprogram til læger og sygeplejersker, en app til ansatte i skydiving-centre og en app til notifikationer om nye afsnit af serier, og meget andet.

Hovedekspertise

React NativeReact Native9 år
JavaScriptJavaScript15 år
PHPPHP5 år
Node.jsNode.js6 år
8+

Erfaring6

Sweetspot.io (via Proxify)

Senior React Native Developer

Sweetspot.io (via Proxify)
Sports and Fitness Tech
May 2021 - Aug 2026 · 5å 3m

Sweetspot is a Stockholm based golf technology company providing tee time booking and course management software to golf clubs across Europe and North America.

  • Built the majority of the app's native layer on both platforms, including iOS Live Activities with ActivityKit, WidgetKit widgets, and an Android foreground service equivalent

  • Developed custom React Native bridge modules in Swift, Objective-C, Kotlin, and Java to expose platform capabilities to the JavaScript layer

  • Integrated Adyen payments across markets, covering card, Apple Pay, Google Pay, and BankID

  • Shipped in-app Memberships and Passes purchasing with auto-renewing subscriptions

  • Owned the automated release pipeline built on semantic-release, Fastlane, and GitHub Actions, with Maestro end-to-end tests running on CI

  • Delivered multi-market localisation across the US, Canada, and Poland through Lokalise

  • Sustained a crash-free rate of roughly 99.99% on iOS and cut app size by about 48 MB

TypeScriptTypeScript
React NativeReact Native
JavaJava
PostmanPostman
SwiftSwift
12+
Vembla

Senior Mobile Developer

Vembla
Food and Beverage Delivery
Sep 2020 - May 2021 · 8m

Vembla is a Swedish on-demand delivery service bringing groceries and pharmacy orders to customers from local stores.

  • Refactored the delivery application, shipping new features and clearing outstanding defects across iOS and Android

  • Reworked in-app payment methods to support the service's checkout flow

  • Integrated Branch and Facebook Pixel to give the growth team attribution and campaign analytics

  • Configured deep links and universal links on both platforms for campaign and content entry points

  • Added CodePush to shorten the release cycle and ship fixes without store review

  • Integrated Sentry for crash and error monitoring in production

JavaScriptJavaScript
React NativeReact Native
SentrySentry

Mobiludvikler

Proxify AB
Information Technology (IT) and Services
May 2019 - Aug 2021 · 2å 3m
  • Udviklet en jobsøgningsapplikation til læger og sygeplejersker fra bunden.
  • Implementeret brugergodkendelse via BankID.
  • Integreret intercom til kundekommunikation.
  • Implementeret push-meddelelser ved hjælp af Google Cloud Messaging (GCM).
  • Brugt App Center til kontinuerlig integration og levering (CI/CD).
  • Tilføjet Firebase Analytics og Crashlytics til overvågning af ydeevne og rapportering af nedbrud.
React NativeReact Native

Senior Mobile Developer

Colivia
Healthcare
May 2019 - Sep 2020 · 1å 4m

Colivia is a Swedish healthcare staffing service connecting doctors and nurses with shift and permanent roles at clinics and hospitals.

  • Built the job search application for doctors and nurses from scratch in React Native, covering both platforms

  • Implemented BankID authentication to meet Swedish identity verification requirements

  • Integrated Intercom for in-app support and direct messaging with candidates

  • Implemented push notifications through GCM to surface new role matches

  • Configured deep links and universal links to route users from campaigns into specific listings

  • Set up App Center as the CI/CD pipeline for automated builds and tester distribution

  • Added Firebase Analytics and Crashlytics for usage tracking and crash reporting

JavaScriptJavaScript
React NativeReact Native
FirebaseFirebase
Freelance

Mobiludvikler

Freelance
Remote Work and Collaboration
Sep 2016 - Mar 2019 · 2å 6m
  • Skabt applikationer fra bunden.
  • Udviklet nye funktioner til eksisterende applikationer.
  • Udgivet apps i App Store og Google Play.
  • Skabte prototyper til nye app-koncepter.
  • Rettede fejl og løste problemer i eksisterende applikationer.
  • Optimeret app-ydelse og effektivitet.
React.jsReact.js
TypeScriptTypeScript
Node.jsNode.js
React NativeReact Native
JavaJava
3+
NIX Solutions

Webudvikler

NIX Solutions
Information Technology (IT) and Services
Dec 2010 - Apr 2016 · 5å 4m
  • Udviklet front-end-komponenter til webapplikationer.
  • Bygget brugergrænseflader med fokus på brugervenlighed og design.
  • Bidraget til backend-udvikling og logik på serversiden.
  • Oprettelse og vedligeholdelse af sociale applikationer.
PHPPHP
MySQLMySQL
JavaScriptJavaScript
HTMLHTML
CSSCSS
2+

Vurderinger

Ingeniørmæssig fremragendehed

Alex samlede præstation i en 90-minutters teknisk vurdering i realtid er blandt de top 5% bedst kontrollerede React-udvikler hos Proxify.

Uddannelse

Kharkiv National University of Radio Electronics
Kharkiv National University of Radio Electronics
Computerteknik2005 - 2010

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