i
ivanbarbaric

Ivan Barbaric

@ivanbarbaric
5.0(8)

Senior JavaScript Engineer: High Performance Web Solutions

Croatia
English, Croatian
About me
I craft lightning-fast web applications with 13+ years of programming experience. Specializing in performance optimization, I've cut load times by 65%, improved Lighthouse scores from 72 to 94, and built systems handling 10,000+ items without lag. My expertise spans React, Next.js, TypeScript and Web3. I've optimized NFT marketplaces, e-commerce platforms, and complex applications, always focused on measurable results. I don't just write code—I solve real business problems through clean, optimized solutions. Need a developer who obsesses over performance and user experience? Contact me!... Read more

Skills

i
ivanbarbaric
Ivan Barbaric
Offline • 
Average response time: 2 hours

See my services

Full Stack Web Applications
I will build high performance react, nextjs apps with optimized UX
5.0(6)
From$100 / projectMore details
Decentralized Applications (dApps)
I will build your web 3 app or nft marketplace with blockchain integration
5.0(2)
From$200 / projectMore details

Portfolio

8 Reviews
5.0

(8)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Recommend to a friend
    5
  • Service as described
    5
1-5 out of 8 Reviews
Sort By
Most relevant
    J
    image-docs

    jovan_adamov

    Repeat Client

    HR

    Croatia

    5

    Great job, Thanks!

    $50-$100

    Price

    3 days

    Duration

    gig

    Full Stack Web Applications

    Helpful?
    Yes
    No
    J
    image-docs

    jovan_adamov

    Repeat Client

    HR

    Croatia

    5

    Easy to work with and he delivers exceptional work.

    $50-$100

    Price

    10 days

    Duration

    gig

    Full Stack Web Applications

    Helpful?
    Yes
    No
    J
    image-docs

    jovan_adamov

    Repeat Client

    HR

    Croatia

    5

    Excellent, timely and professional work.

    gig

    Decentralized Applications (dApps)

    Helpful?
    Yes
    No
    J
    image-docs

    jovan_adamov

    Repeat Client

    HR

    Croatia

    5

    Great to work with and great quality!

    gig

    Decentralized Applications (dApps)

    Helpful?
    Yes
    No
    J
    image-docs

    jovan_adamov

    Repeat Client

    HR

    Croatia

    5

    Professional, quick and knowledgable.

    gig

    Full Stack Web Applications

    Helpful?
    Yes
    No