Front end and partially back end developer
All the skills based on documentation, books(B. Meyer, M. Fowler, S. Mcconnell and etc), articles, podcasts, meetups, and personal experience(6+ years). Any task can be done, absolutely doesn’t matter of the complexity and skill level of it. There are three key things to achieve any goal: responsibility, RND, and deadline.
There were many different freelance projects. Nothing really large-scale and special. Mostly work alone, also have experience in team dev, know about agile, scrum, design systems, UI kits, code review, CI/CD and other stuff.
markup example - pug, scss, bem, gulp, vanilajs, jquery, babel - repo access on demand
react example - design, docker, oop, php, webpack, babel, flow, preact, react, redux, redux-saga - repo access on demand
react test task - react, typescript, jest, react testing library. Some contradictory solutions implemented, chosen by employer.
npm package - nodejs, jest.