Ihor Hromadskyi

Full-Stack Developer | CRM & SaaS Platforms | Next.js, Node.js, API

I am a Full Stack Developer with experience in building scalable web applications from frontend to backend. I specialize in developing modern, responsive, and high-performance interfaces using React, Next.js, HTML, CSS, JavaScript, and TypeScript. On the backend, I work with Node.js and NestJS, building REST APIs, implementing business logic, and integrating third-party services such as payment systems and external APIs. I have experience designing and managing databases using MongoDB and PostgreSQL, including schema design and query optimization. My skill set also includes: API development and integration (REST) Authentication and authorization (JWT, role-based access control) Payment gateway integration Multilingual (i18n) implementation Telegram bot development and integration Version control with Git and GitHub Deployment on Linux servers (Ubuntu) Nginx configuration and SSL (Let’s Encrypt) Performance optimization and debugging I follow modern development practices and have experience working in Agile teams, participating in planning, development, and delivery cycles. I focus on writing clean, maintainable code and building reliable production-ready systems.