parniekov

developandmaintainacross-platformmobileapplicationforiOSandAndroid platformsusingReactNativeandTypescriptbasedonReduxToolkitwithReduxPersistforstate persistence.ReactNavigationforintuitiveUIwithover25screens:authentication,restaurant selection,ordermanagement,tablemanagement,paymentprocessing,menubrowsing,order editing,andprofilemanagement.HTTPrequeststhroughAxiosandRESTAPI.Real-time communicationviaSignalRWebSocketconnectionsforliveorderupdates.Integrationofmultiple paymentgatewaysincludingPOSterminalsthroughnativemodules.

developandmaintainacross-platformmobileapplicationforiOSandAndroid platformsusingReactNativeandTypeScriptbasedonReduxToolkitandReduxSaga(SagaSlices). ReactNavigation,intuitiveUIforover30screens:authentication,registration,profile,payments, statements,transactions,cardmanagement,notifications,andchatwidgetintegration.HTTP requeststhroughAxiosandRESTAPI.PushNotificationsofFirebaseCloudMessagingforiOSand Android.Configurationofpermissionrequests,tokenhandling.IntegrationwithWatchOSapp throughObjective-Cbridge.WritingunittestsusingJestandReactNativeTestingLibrary.Setting upE2EtestingthroughDetox.Implementationofpre-commithooksthroughHuskyforautomatic codeverification.SettingupCI/CDthroughMicrosoftAppCenterwithseparateconfigurationsfor devandprodenvironments.AutomatedbuildsanddistributionthroughAppCenterand TestFlight.Implementationoffeaturetogglesforgradualfeaturerollout.Configurationof CodePushforrapidupdates.TokenstoragethroughReactNativeKeychain.Analyticsand MonitoringIntegrationfortrackingusageandcollectingcrashreports.Workinginateamwith trunk-baseddevelopmentstrategyandshort-livedfeaturebranchesforrapidchangeintegration.

developandmaintainthecross-platformmobileapployalty,payments(iOS/ Android)onReactNativeandJavaScript.Redux+ReduxPersistforstate,ReactNavigationforUI (50+screens).Features:Auth0andsociallogin,profileandorders,cartandcheckout, loyaltycardsandpoints,QRpaymentsandscanning,chat,referrals,pushnotifications, Mapboxfordeliverytracking,biometrics,Bugsnag,CodePush,Axios.Jest,Husky,Storybook, react-native-localization.

Leadthedevelopmentandmaintenanceofcross-platformmobileapplications (iOS/Android)acrossSport,Entertainment,andBusinessdomainsusingReactNativeand TypeScript.Architectedprojectsetupsandprovidedtechnicalestimationsforcorefeatures. DevelopedandmaintainedcomplexUI/UXandbusinesslogiccomponents.Engineeredcustom NativeModulesforhigh-performancefeaturesincludingCamera,VideoPlayer,andPDFEditor. ImplementedstatemanagementandformhandlingusingReduxSagaandFormik.Integrated secureauthentication(Google,Facebook),FirebaseDynamicLinks,andPushNotifications. ManagedAPIinteractionsviaFetchAPI.Conductedfeaturedemonstrationsforstakeholdersand providedtechnicalmentorshiptojuniordeveloperstoensurecodequalityandbestpractices.

developandmaintainamobileapplicationforandAndroidplatformusingJava andAndroidSDK.Retrofit2forAPIcalls,Glide/Picassoforimageloading,RecycleViewfor renderinglists.UsingLogcatandtheAndroidStudioProfilertotrackdownmemoryleaksor crashesreportedintheGooglePlayConsole.LocalPersistence:UsingRoomorSQLitetocache datalocally.BuildingscreensusingConstraintLayout.ImplementationAWSfacerecognition.

developandmaintainamobileandwatchapplicationsforAndroidplatform usingJavaandAndroidSDK.Retrofit2forAPIcalls,Glide/Picassoforimageloading,RecycleView forrenderinglists.UsingLogcatfordebugging.BuildingscreensusingLinearLayout, RelativeLayout,FrameLayout.ImplementationBluetoothconnectionbetweendevices,receive/ answercalls,trackdata.