Kostiantyn Shtykov

Java · Javascript and Typescript

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I am a Java / Full-stack developer with a strong focus on backend development and application security.I work with Java and Spring Boot, building REST APIs and implementing authentication and authorization using JWT, OAuth2, and Keycloak. I have experience configuring roles, access permissions, resource servers, and integrating backend services with frontend applications.I also work with React / Next.js and TypeScript, creating clean and user-friendly frontends such as admin panels, user dashboards, forms, and dynamic data-driven pages. For styling, I use Tailwind CSS.In my work, I follow…