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

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.

See more

Experience Level

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.

Education

Add your educational history here.

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Media & Entertainment, Gaming, Professional Services, Other