Sergii
Pro

Sergii Kirianov

Senior FullStack Engineer building scalable digital products

New to Contra

Sergii is ready for their next project!

I finally got tired of maintaining product tours, onboarding flows, and endless “How do I…?” documentation. So I built something better. Introducing AI-powered product tours for Next.js — zero config. You just drop in a component, ask: “How do I update my password?” …and the...
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❌ Uploading images to AI chat apps sucks. Especially when the image is on your phone… but the chat is on your laptop. Most apps force you into this clunky flow: email image to yourself → download → upload → pray it works. So we thought: Why not remove the friction and make...
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🚀 Shipped: MentorShow Multilingual Frontend (Next.js + Builder.io)
Just wrapped the full frontend build for MentorShow.com — a global masterclass platform.
What I built:
Full Next.js frontend from Figma
English / French / Spanish i18n
Deep Builder.io integration + custom components
...

mentorshow.com

MentorShow : Masterclass et Cours en ligne

Les plus grands talents français vous enseignent leurs secrets, leurs astuces, leurs techniques et leurs conseils dans des cours 100% en ligne.

Just shipped a major refresh for Whiz Study — including an interactive AI tutor simulation for SAT/PSAT & AP.
Honestly, I love when landing pages let you actually play with the tech instead of just reading about it - so we built something fun 🤩
What started as a simple question...
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🚀 I just published a new service for full MVP development (Web or Mobile).
If you're a founder with an idea you want to turn into a real, scalable product, this is exactly what I specialize in.
I’ve led the architecture and development of platforms serving 60,000+ users, and I’m...

contra.com

Full MVP Development — Web or Mobile App by Sergii Kirianov

Read more about Full MVP Development — Web or Mobile App by Sergii Kirianov on Contra.