Primary stack Angular, TypeScript, RxJS, NgRx, Sass, and LESS, Angular Material, Unit testing (Karma, Jasmine, Jest), e2e testing (Cypress). Good knowledge and some experience in React, React Native, Redux, Node.js, Nest.js, MongoDB. Good understanding of OOP, SOLID, KISS, DRY, YAGNI, FP, SoC, IoC. Able to learn quickly.