t
tostcra

Andrii T

@tostcra

Fullstack Web Developer

Ukraine
Ukrainisch, Russisch, Tschechisch, Englisch
Einige Informationen werden in englischer Sprache angezeigt.
Über mich
I am a full-stack developer specializing in React, Next.js, Node.js, and Solidity. I have successfully delivered 13 projects with high client satisfaction, including complex e-commerce platforms and blockchain integrations. I am comfortable taking over existing codebases and shipping reliable changes.... Mehr lesen
t
tostcra
Andrii T
offline • 
Durchschnittliche Antwortzeit: 1 Stunde

Meine Dienstleistungen

Sicherheit
I will remove malware and google blacklist warning from your hacked site
Ab45 $ / ProjektWeitere Details

Arbeitserfahrung

Self_Employed

Self Employed

Freiberufler • 2 yrs 4 mos

Blockchain Developer (Solidity, EVM)

Aug 2025 - Present • 1 yr

Writing and adapting Solidity contracts from existing protocol code, deploying and maintaining them, plus the read side: services and interfaces that track balances and contract state across chains. Client names and repositories are covered by NDA.

Full-Stack Web Developer

Apr 2025 - Present • 1 yr 4 mos

Independent developer working with clients on e-commerce, business sites and web apps. 13 delivered projects, 12 positive reviews and none negative, with a 100% success rate. One client returned for five consecutive projects. What I do most: Stores and sites on WordPress, OpenCart, Horoshop and Shopify: new modules, integrations, and fixing someone else's code without breaking what already works. Interfaces in React and Next.js, from markup to wiring up the API. Analytics and automation: GA4 and GTM ecommerce tracking, parsers, Telegram bots, moving data between services and CRMs. Website security and performance: cleaning infected sites, blocking bot traffic, finding the real cause of server load. Recent example. A WordPress site had been cleaned by another developer five months earlier and was reinfected. The host's scanner reported one infected file. Comparing every core, theme and plugin file against the official releases found four separate infections, including a fake plugin that hid itself from the plugin list and served ads to visitors. The host rescanned after my work and confirmed the account was clean.