What should a senior frontend developer know?

Question

Career in IT

Hello, I’m interested to know what skills and experience a senior frontend developer should have? Different vacancies have completely different requirements for such a position.
PS I'm not asking for a definitive answer, just express your personal opinion.

Answer 1

Understanding all JS in its entirety. All its bugs and features.
Knowledge of ES6, ES2015, ES7, etc.
At the moment, I think, it is necessary to know all kinds of view libraries and full MVC frameworks: React, AngularJS (+ 2.0), Vue.
Understanding of browser-client interaction, excellent knowledge of HTTP, WS.
Understanding asynchrony, synchronicity, synchronization.
Well, of course, HTML, CSS, understanding and knowledge of preprocessors, postprocessors, css-modules, BEM. Ability to customize gulp/grunt/webpack.
Ability to use npm/yarn.
Huge amount of knowledge in the field of libraries. What can be connected, and what is not worth it.

Answer 2

The question is philosophical.
In different companies, even a junior can be hired for this position .....
In fact, this happens.

Answer 3

Hello, I’m interested to know what skills and experience a senior frontend developer should have? Different vacancies have completely different requirements for such a position.

Historically, a clear definition of "skills" for the "position" of Senior, unfortunately, does not exist, regardless of the area, "frontend" or something else.
As well as, for a "director" or "technical director", depending on the scale and other parameters of the company, the requirements will be very different. Or, for example, the requirements for a lead developer...
Imagine a lead developer and a set of tasks that he must solve in some large company, for example, "Mail.ru" and a similar position in the company "Site Slash Incorporated". Approximately with a similar situation you will encounter when entering an institute, and the "value" of the education received, respectively. proportionally depends on the "complexity of admission".

Answer 4

1. Be a real senior - you will not have such questions.
2. On many vacancies, as huwesu rightly noted, it is quite possible for a jun to work. Although formally it will be called a senior.

Answer 5

Different requirements because different work
Accordingly, it depends on the specialization
And so html css js is enough for him to know well

Answer 6

From myself I will add that colloquial English is also included in this topic. Somewhere less, somewhere more.

Answer 7

I agree with Konstantin Kitmanov from a senior with a salary of $ 3-4 thousand, they require everything you can think of from algorithms to everything else, and in some companies you need to know both react and angular .. in short, there is something to strive for
here, you can read
https://digitalhr .ru/blog/interview-with-a-senior-...

Answer 8

Read better D. Knuth, better in the old edition, though about black and red trees they are not there, but you can google it. And then go to js