Profile image of alexkovalc
Flag of Ukraine Zelenodolsk, Ukraine
Member since April 25, 2017
0 Recommendations


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Experienced developer with iOS/Android native app and Web App. My goal is to provide the best quality result on time and keep the credit with the client. My Skills. - iOS, Android, Swift, Objective C, Kotlin, Java, React Native, Flutter - Web Front End : React.js, Redux, Saga, HTML, CSS, Bootstrap 4, Material-UI, Apex - Web Back End: PHP, Node.js, ASP.NET, Laravel, Wordpress - Database: MySQL, Firebase realtime DB, Firestore, MongoDB, SQLite - Other skills: C/C++, C#, Qt, .NET, Python Let's have a contract and work for a long time with each other.
$50 USD/hr
7 reviews
  • 100%Jobs Completed
  • 88%On Budget
  • 88%On Time
  • 25%Repeat Hire Rate

Portfolio Items

Recent Reviews

  • image of Soufiane B. Project for Kovalchuk O. -- 8 €3500.00 EUR

    “Another project for Koval that was delivered on time with highest quality. Looking forward into working more with him :)”

  • image of Monica D. Social Media Influencer $2000.00 USD

    “Very professional and great communication. Kovalchuk worked with me on bringing my website to life. I appreciate his patience as I am a novice and he explained everything to me when asked without any problems. I will continue doing business with Kovalchuk in the future”

  • image of Soufiane B. Project for Kovalchuk O. -- 6 €1350.00 EUR

    “This is the fourth project already with Mr Kovalchuk and we are still going strong! Thanks”

  • image of Soufiane B. Project for Kovalchuk O. -- 5 €4900.00 EUR

    “As always Kovalchuk did great work and we are looking to continue working with him in the long run.”

  • image of Soufiane B. Project for Kovalchuk O. -- 4 €376.00 EUR

    “Kovalchuk did great job designing the UI of our app. We are looking forward into hiring him to make the functionality as well. Thanks”

  • image of Soufiane B. Clean UI of my IOS app and add in app purchases $1350.00 USD

    “Once again Kovalchuk was great to work with. We are already discussing our next project :) Looking forward into building more projects with you.”


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