Danijel Kratovac

- Led migration from React to Next.js, improving SEO and performance with SSR. - Built AI-powered features using LLM APIs for customer support and image processing. - Developed scalable backend services with Node.js/NestJS and Laravel, including secure RESTful APIs and authentication. - Implemented headless CMS solutions with Strapi and Next.js. - Integrated Web3 features such as wallet connection, crypto transactions, and real-time data for mobile-first and gaming platforms.

- Led design, development, and deployment of scalable web apps using React, Angular, Node.js, NestJS, Go, and cloud tools (AWS, CI/CD). - Built SaaS platforms with React, Tailwind, MongoDB, and custom UI libraries. - Developed fintech features with Stripe, real-time sockets, and secure payments. - Created REST APIs and microservices with Go (goroutines), integrated PostgreSQL/Redis, used gRPC for distributed systems, and improved performance with monitoring (Datadog).

- Improved performance by refactoring code and optimizing systems - Built CI/CD pipelines using GitHub Actions, and CircleCI - Worked with MEAN stack and mobile-first design, upgrading CRM systems with Vue, Vuex, and Laravel - Developed SaaS apps with React, Redux, Node.js, and REST APIs, including GraphQL-based reusable components - Built data visualization tools with D3 and Highcharts, ad platforms with React and backend systems with Node, MongoDB, Laravel, and tested using Jest, Mocha and Cypress