Konstantin Nikolaienko
AI & Full Stack Developer | Next.js, SaaS, Stripe, Automatio
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Meet Konstantin
Full Stack & AI Developer specializing in SaaS platforms, AI automation, trading systems, Stripe integrations, Next.js applications, dashboards, and responsive frontend fixes.
I build modern web apps, optimize UI/UX, integrate APIs, and solve complex frontend/backend issues quickly and cleanly.
Focused on performance, scalability, and real business results.
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Rate
$25 - $50/hr
Skills and tools
Details
Rivne, Ukraine
(GMT+2) Eastern European Time (EET), ±2 hours
Fluent in Ukrainian and Russian • Professional Working Proficiency in English