Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I'm Viktor Kostiv, a full stack developer with experience building interactive, animated, high-performance web applications since 2020. I specialize in frontend UX and backend integrations, using Tailwind CSS, JavaScript, Vue.js, Three.js, and GSAP, and I'm comfortable building robust Node.js backends (REST APIs, WebSockets). I enjoy delivering seamless end-to-end solutions, working with external API integrations, Solana CLI, and custom Web3 logic, and I focus on data handling and real-time updates to ensure smooth user experiences. I love delivering scalable frontend experiences and integrated systems.…I'm Viktor Kostiv, a full stack developer with experience building interactive, animated, high-performance web applications since 2020. I specialize in frontend UX and backend integrations, using Tailwind CSS, JavaScript, Vue.js, Three.js, and GSAP, and I'm comfortable building robust Node.js backends (REST APIs, WebSockets). I enjoy delivering seamless end-to-end solutions, working with external API integrations, Solana CLI, and custom Web3 logic, and I focus on data handling and real-time updates to ensure smooth user experiences. I love delivering scalable frontend experiences and integrated systems.

Viktor Kostiv

Full Stack Developer, Web Developer, Back-End Developer, +2





I'm Viktor Kostiv, a full stack developer with experience building interactive, animated, high-performance web applications since 2020. I specialize in frontend UX and backend integrations, using Tailwind CSS, JavaScript, Vue.js, Three.js, and GSAP, and I'm comfortable building robust Node.js backends (REST APIs, WebSockets). I enjoy delivering seamless end-to-end solutions, working with external API integrations, Solana CLI, and custom Web3 logic, and I focus on data handling and real-time updates to ensure smooth user experiences. I love delivering scalable frontend experiences and integrated systems.…I'm Viktor Kostiv, a full stack developer with experience building interactive, animated, high-performance web applications since 2020. I specialize in frontend UX and backend integrations, using Tailwind CSS, JavaScript, Vue.js, Three.js, and GSAP, and I'm comfortable building robust Node.js backends (REST APIs, WebSockets). I enjoy delivering seamless end-to-end solutions, working with external API integrations, Solana CLI, and custom Web3 logic, and I focus on data handling and real-time updates to ensure smooth user experiences. I love delivering scalable frontend experiences and integrated systems.

Available to hire

I’m Viktor Kostiv, a full stack developer with experience building interactive, animated, high-performance web applications since 2020. I specialize in frontend UX and backend integrations, using Tailwind CSS, JavaScript, Vue.js, Three.js, and GSAP, and I’m comfortable building robust Node.js backends (REST APIs, WebSockets).

I enjoy delivering seamless end-to-end solutions, working with external API integrations, Solana CLI, and custom Web3 logic, and I focus on data handling and real-time updates to ensure smooth user experiences. I love delivering scalable frontend experiences and integrated systems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Ukrainian

Fluent

Work Experience

Full Stack Developer

June 1, 2025 - December 1, 2025

Developed and maintained a scalable multi-business CRM platform with frontend and backend components, including REST APIs and WebSocket-based real-time data handling; focused on data throughput, performance, and user experience.