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

Hey there! I'm a passionate Fullstack Developer with more than 2 years of experience building modern web applications. My expertise lies in JavaScript/TypeScript, React, Node.js, Next.js, and Nest.js, crafting scalable and performant solutions. I’m also diving deep into the world of AI, working with AI agents, LangChain, RAG systems, and advanced prompting techniques to build smarter applications. Whether it's a sleek frontend, a robust backend, or an AI-powered feature, I love turning ideas into reality.…Hey there! I'm a passionate Fullstack Developer with more than 2 years of experience building modern web applications. My expertise lies in JavaScript/TypeScript, React, Node.js, Next.js, and Nest.js, crafting scalable and performant solutions. I’m also diving deep into the world of AI, working with AI agents, LangChain, RAG systems, and advanced prompting techniques to build smarter applications. Whether it's a sleek frontend, a robust backend, or an AI-powered feature, I love turning ideas into reality.

Vladyslav Vagin

Full Stack Developer, Web Developer, Developer, +2





Hey there! I'm a passionate Fullstack Developer with more than 2 years of experience building modern web applications. My expertise lies in JavaScript/TypeScript, React, Node.js, Next.js, and Nest.js, crafting scalable and performant solutions. I’m also diving deep into the world of AI, working with AI agents, LangChain, RAG systems, and advanced prompting techniques to build smarter applications. Whether it's a sleek frontend, a robust backend, or an AI-powered feature, I love turning ideas into reality.…Hey there! I'm a passionate Fullstack Developer with more than 2 years of experience building modern web applications. My expertise lies in JavaScript/TypeScript, React, Node.js, Next.js, and Nest.js, crafting scalable and performant solutions. I’m also diving deep into the world of AI, working with AI agents, LangChain, RAG systems, and advanced prompting techniques to build smarter applications. Whether it's a sleek frontend, a robust backend, or an AI-powered feature, I love turning ideas into reality.

Available to hire

Hey there! I’m a passionate Fullstack Developer with more than 2 years of experience building modern web applications. My expertise lies in JavaScript/TypeScript, React, Node.js, Next.js, and Nest.js, crafting scalable and performant solutions. I’m also diving deep into the world of AI, working with AI agents, LangChain, RAG systems, and advanced prompting techniques to build smarter applications. Whether it’s a sleek frontend, a robust backend, or an AI-powered feature, I love turning ideas into reality.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Spanish; Castilian

Intermediate

Ukrainian

Fluent

Russian

Fluent

Work Experience

Fullstack Web Developer at Cognitive Experts

September 1, 2024 - Present

Developing Fullstack real-time web application, with AI models integrations, prompt system, microservice architecture for all types of business, implementing payment system, Sharepoint integration, web scraping and crawling integration, LLM models, LangChain and various types of js-libraries. Maintenance and creation Landing for product, including plugin Wordpress. Implementing tools and creation prompts for LLM models, vector databases and vector search indexes. Creation and maintenance CRM system with prompt managing, chatbots settings, users analytics, testing environment for different AI models, testing and optimization LLM responses, document vector searching. Redux State management and Mobile adaptation development, animation.

Junior Web Developer at ONG REMAR

June 30, 2024 - July 15, 2025

Developing full-stack web applications for Solidaria Media, including webpage optimization and working with SEO, Google Analytics, and Vercel Analytics. Implementing these tools into projects and maintaining existing projects using WordPress. Creating adaptive and responsive designs for landing pages and product cards. Developing an admin dashboard for managing web applications, and improving UI and enhancing UX.