Vitalii K.

Reliable development partner with 19,000+ hours tracked on Upwork, focused on custom web application development. Backend: PHP, Laravel, API integrations, AI agents, cloud services, performance optimization, deployment. Frontend: Vue, Nuxt. 24/7 availability for emergencies

💼 20+ years of experience as a full stack web developer, ⭐ 5-star feedback on every job, 🕒 19,000+ hours tracked, 💸 $1M+ total earnings, 💯 100% Job Success, ✨ Top Rated Plus

Backend Development

• PHP development, custom web development, REST API design and development
• Laravel framework: queues and background jobs, task scheduling, real-time events and broadcasting, Eloquent ORM, authentication, caching, monitoring, testing
• Admin panels: Laravel Filament, Laravel Nova
• Databases: MySQL, MariaDB, PostgreSQL, BigQuery, ClickHouse
• Caching and search: Redis, Memcached, Sphinx

Frontend Development

• JavaScript, TypeScript
• Responsive interfaces with Vue.js and Nuxt, built with Vite
• Tailwind CSS, Bootstrap, shadcn-vue components
• Frontend as a standalone SPA consuming a REST API, or tightly integrated with a Laravel backend via Inertia.js

AI MVP Development

• Rapid prototyping and MVP development using AI-assisted tools
• AI features built on the Laravel AI SDK: chatbots, AI agents with tool calling, embeddings and vector search
• Provider-agnostic setup supporting OpenAI, Anthropic, Google Gemini and more, so you can switch providers without rewriting code
• MCP servers built with Laravel MCP, letting AI assistants like Claude and ChatGPT securely access your app's data and actions

Legacy System Modernization

• Auditing legacy code on older PHP versions (PHP 5, PHP 7) and upgrading to modern PHP 8.x
• Upgrading frameworks to their latest versions
• Rebuilding legacy codebases on modern Laravel
• Migrating backends from other frameworks (Yii, Yii2, Symfony) to Laravel
• Clear upgrade recommendations and a roadmap before any work begins

Platform Integrations