Alexander K.

Alexander K.

React-utvikler

Topp prestasjon 10/10
Ukraine
Betrodd medlem siden 2019
15 år erfaring

De siste seks årene har han hovedsakelig jobbet med React og React Native. Han har også imponerende kunnskaper om arkitekturstiler, teknologier, domener og programvareutviklingsmetodologier, oppnådd gjennom over 11 års erfaring med JS-baserte rammeverk. Alexander jobbet til og med med utvikling av React Native, og la igjen kodebiter på nesten enhver iPhone som finnes.

Noen av hans mer interessante prosjekter inkluderer en toppmoderne jobbsøknadsapplikasjon for leger og sykepleiere, en app for ansatte ved fallskjermhoppingsentre, og en app for varsling om nye episoder av serier, samt mange andre.

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 · 5år 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

Mobilutvikler

Proxify AB
Information Technology (IT) and Services
May 2019 - Aug 2021 · 2år 3m
  • Utviklet en jobbsøkingsapplikasjon for leger og sykepleiere fra bunnen av.
  • Implementert brukerautorisasjon via BankID.
  • Integrert Intercom for kundekommunikasjon.
  • Implementert push-varsler ved hjelp av Google Cloud Messaging (GCM).
  • Brukt App Center for kontinuerlig integrasjon og levering (CI/CD).
  • Lagt til Firebase Analytics og Crashlytics for ytelsesovervåking og krasjrapportering.
React NativeReact Native

Senior Mobile Developer

Colivia
Healthcare
May 2019 - Sep 2020 · 1år 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

Mobilutvikler

Freelance
Remote Work and Collaboration
Sep 2016 - Mar 2019 · 2år 6m
  • Laget applikasjoner fra bunnen av.
  • Utviklet nye funksjoner for eksisterende applikasjoner.
  • Publiserte apper i App Store og Google Play.
  • Laget prototyper for nye appkonsepter.
  • Fikset feil og løst problemer i eksisterende applikasjoner.
  • Optimalisert appytelse og effektivitet.
React.jsReact.js
TypeScriptTypeScript
Node.jsNode.js
React NativeReact Native
JavaJava
3+
NIX Solutions

Nettutvikler

NIX Solutions
Information Technology (IT) and Services
Dec 2010 - Apr 2016 · 5år 4m
  • Utviklet frontend-komponenter for webapplikasjoner.
  • Bygget brukergrensesnitt med fokus på brukervennlighet og design.
  • Bidratt til backend-utvikling og logikk på serversiden.
  • Opprettet og vedlikeholdt sosiale applikasjoner.
PHPPHP
MySQLMySQL
JavaScriptJavaScript
HTMLHTML
CSSCSS
2+

Vurdering

Ingenieurskunst der Spitzenklasse

Alex totale ytelse i en 90-minutters live teknisk vurdering rangerer i de top 5% av vurderte React-utvikler hos Proxify.

Utdannelse

Kharkiv National University of Radio Electronics
Kharkiv National University of Radio Electronics
Datateknikk2005 - 2010

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