Sergey Kalaus

JavaScript Developer

Full-stack JavaScript/TypeScript developer focused on building production web apps and automations. Strong in n8n and AI-enabled workflows with a Gemini focus, Node.js (NestJS/Next.js), React/Vue/Angular, GraphQL, and cloud-native delivery on AWS/Google Cloud with Docker and Kubernetes. Experienced with MySQL/PostgreSQL/Redis and testing with Jest, Cypress, and Playwright.