Leon Jež

-Developed and maintained a web application using AngularJS. -Built a REST API with Symfony and AngularJS frameworks. -Created an Elasticsearch logfile visualization using AngularJS and D3.js. -Worked as part of the DevOps team to maintain server and network infrastructure. -Built a real-time statistics API using WebSockets and Node.js. -Ported a legacy AngularJS web application to React. Technologies: React, Docker, MongoDB, Node.js, AngularJS, JavaScript, HTML, Angular, APIs, REST APIs, SQL

-Developed a SaaS app according to client specifications, including user registration, QR code management and administrative features using a modern React (React, TypeScript, and Redux), Supabase (PostgreSQL), and Vercel stack. -Implemented a modern CI/CD process using Docker and GitHub Actions. -Documented the developed app and its CI/CD process to ensure a smooth transition to other developers. Technologies: JavaScript, React, Redux, MUI, Postgres, Mongodb, TypeScript, REST APIs, SaaS, Nodejs, Nestjs

-Created a company website in the form of a WordPress theme. -Developed Java web services for PDF generation and image resizing. -Provided professional advice on AngularJS framework and RESTful API design. -Implemented a RESTful API authentication proxy to integrate with Oracle ORDS. -Helped with front-end code migration from Oracle APEX to React.js. Technologies: React, AngularJS, WordPress, CSS, HTML