This is an competency matrix from a company i found on the internet "Competence	Description	Skill/Technology	Junior	Mid	Senior
HTTP			"What happens when you type example.com into the address bar (i.e. dns, ip address, server, request & response, rendering)?

What is HTTPS and how is it different to HTTP? 

Why can’t you make a request from HTTPS to HTTP?"	"Some basic knowledge about encryption 

Encryption types (i.e. symmetric vs asymmetric)

SSl/TLS handshake

public key vs private key 

cookies vs local storage vs session storage"	"Aware of multithreading, web workers, browser engines

Understanding of event loop (call stack, rendering)

Performance profiling & auditing tools (e.g. google lighthouse)

Comfortable working with Web 

Comfortable working with Browser JavaScript APIs"
HTML	Ability to write HTML code is a semnatic way. Undarstand how browsers work and parse HTML	"— HTML/HTML5 (SEO, A11y)
— Browsers"	"HTML basics 			
— elements, tags, attributes, custom attribute
— data 
— basics of semantics and accessibility / SEO
— forms and validation"	"Script loading (async / defer)

Meta/embedded information

Loading scripts (js file vs modules)"	"Advanced knowledge of iframes

Advanced knowledge of HTML5 elements (audio, video, etc)"
CSS	Ability to write, undestand and use best practices with CSS 	"— CSS, CSS Modules
— LESS/SASS/etc.
— Media-query 

Additional
— BEM "	"CSS basics			
— best practice 				
— chain of inheritance				
— BEM			
— pseudo elements vs pseudo classes 			
— position vs display			
— basic unit measurements (em, px, )
— layouts			
— float (oldie but goldie)			
— basic flexbox			
— basic grid		
— responsive			
— at least media queries "	"Reset vs normalize CSS

Animations
Transitions
Z-index		

Basics of preprocessors (LESS, SCSS)			
— Mixing			
— Variables			
— Import/include		

Selectors + combination of selectors		

Basic encapsulation (root, context)"	"Advanced usage of preprocessors at full capability (LESS/SASS):			
— function 			
— ignore missing 			
— extend			

Shadow DOM		

Proficient with encapsulation		

Advanced knowledge of unit measurement (rem, vh, etc)"
JavaScript	JavaScript language knowledge	"— Types / values / syntax
— scope / closure/ this
— prototype/OOP
— async / callback / promise
— ES6+
— Design patterns "	"JavaScript basics:
— types
— scope
— closure
— this

Prototype 

DOM manipulation

Asynchronicity:
— event loop
— promise
— async await

Web browser APIs:
— setTimeout
— fetch
— etc		

Usage of basic ES6+
— map
— forEach
— flatMap
— reduce
— spread operator
— ternary operator"	"Classes

Static functions

Static properties

Inheritance (differences vs prototype)		

Basic knowledge of yield / generators / iterators		

Map / Set		

Basic knowledge of new types (e.g. Bigint / Symbol)

ES6+ mandatory and be up-to-date with newer versions of ECMAScript changes		

Basic knowledge of 
— type vs interface			
— enum 			
— unions			
— typeof, keyof, 			
— extends			
— any vs unknown 		

OOP principles		

SOLID principles"	"Advanced knowledge of TypeScript (TODO: provide examples)	
	
Good understanding of design patterns and their benefits		

Basic knowledge of software architecture			— e.g. MVC, layered architecture, hexagonal architecture (ports and adapters)			

Provided context, can come up with the best optimized solution 			

Can write solution design		

JS performance 
— large set of data
— memory allocation
— web-workers

Understanding of the PWA implementation process			

Knows how to use ServiceWorkers & Web Workers"
Versioning	Ability to use version control	"— GIT / GIT CLI
— visual GIT tools
— Git Flow
— versioning / tags
— hooks"	"Basic git knowledge 
— commit
— push
— merge
— pull
— branch"	"Knows his/her way around with GIT CLI

Aware of GIT flow principles (branching strategies)

Basic understanding of app versioning & tags (alpha/beta,major/minor/patch, rc)

Advanced git usage (rebase, merge, history, squash, stash, pop, apply, cherrypick)"	"Advanced understanding of app versioning and tags		

Decides upon branching strategies		

Knows how to use git hooks"
UI/UX	Ability to build Web interfaces based on specifications. 	"— UI components (Bootstrap, Material, etc..)
— Prototype & design tools (Sketch, Zeplin, Moqups, Adobe XD, Photoshop)
— Responsive / adaptive web apps/ grid system"	"Able to read design guidelines and create basic/medium web interfaces based on the guidelines.


Is aware and able to use 3rd party UI components in order to achieve certain behaviours or layouts

Aware of responsive / adaptive layouts"	"Easily uses any 3rd party UI components

Research and implement based on the projects needs and does regression testing

Creates his own components to achieve special or complex behaviours

Knowledge of any UI Libraries			
— Tailwind			
— Bootstrap			
— angular material			
— MUI


Knows how to use basics of Figma, Adobe XD, etc
— e.g. how to get element properties"	"Abillity to understand the workflow of a aplication, and how the application should ""respond"" when interacting with different actions (Create, Delete, Update, etc..F6): 
— Notifications,
— Page Routing
— Colors
— Modals

Ability to understand and use different kind of assets (svg, png, etc)"
Client-Server Communication		"— REST
— HTTP
— Headers
— GraphQL"	"Knows about CORS		

Basic REST principles		

Basic HTTP verbs (GET, POST, PUT, DELETE, PATCH?)		

Basic HTTP status codes range (1xx, 2xx, 3xx, 4xx, 5xx)

Basic usage of query params vs path params vs body (example.com/:id?param1=abc)"	"Advanced REST principles
— e.g. when a request should be idempotent and why

Advanced knowledge of HTTP verbs (header, options, etc)

Advanced HTTP status codes (knowledge of usage of most common specific codes, e.g. 400, 401, 404, 200, 201, 204)		

Knows the difference between Authentication vs authorization 
— knows the difference between unauthorized vs forbidden

Has at least basic understanding about:
— Headers			
— Cookies			
— E-Tags			
— cache-control / expires / date			

Aware of multiple content-types			 

Basic knowledge of authentication principles (i.e Bearer token)"	"Ability to implement different kind of authentication strategies (e.g. user/pass, jwt, SSO, etc)

Ability to work with real-time data (e.g. web sockets)		

Ability to work with other approaches than REST (e.g. GraphQL)"
Security	Basic web APP security	"— validation & sanitization
— SSL
— OAuth / Implicit Login Flow "	Validation & sanitization of inputs	"Aware of threats in browser		

Aware of OWASP Top Ten
— e.g. XSS injection		

Aware of environment best practices		 

environment process			

.env declaration"	"Good knowledge of OWASP Top Ten			
— knowhow for avoiding those security threats.		

Implementation of environment best practices			
— e.g. secrets management"
Tooling	Build and automation tools knowledge	"— Webpack / Grunt / Gulp
— Angular CLI
— React Scripts
— Vue Scripts
— NPM / Yarn"	"Aware of existence of preprocessors, task runners (e.g. grunt) and compilers (e.g. webpack, babel)		

Uses predefined build setups, unaware of how to customize or modify it.

Knowledge of basic commands (start, build, test, etc.)"	"Able to understand the workflow of preprocessors, task runners and compilers		

Knowledge of how to customize or modify build steps.		

Aware of the setup and able to customize it.		

Aware of package managers (npm, pnpm, yarn) and able to understand:			
— e.g. package.json vs package-lock.json			
— dependency vs dev-dependency			
— npm scripts"	"Ability to init a project from scratch (commit rules, linter rules, etc)

Ability to decide upon deployment processes (webpack config, pipelines)

Fully understands the way of building and bundeling the app. 

Able to build own setups and integrate them in CI pipelines or willing to learn the step-by-step implementation"
Frameworks and Libraries	Usage of frameworks specific to JavaScript	"— Angular
— React
— Vue
— RxJS
— Redux & other state managers
— jQuery
— Web Components
— Utilities: Lodash/_, Apollo (GraphQL)
— TypeScript
— Ionic
— React Native
— Vue Native"	"Knows the basics of at least one major Lib/Framework (Angular, React, Vue, etc..)		 

Ability to write code in at least one major library/framework"	"Eager to work with other technologies, other than the main one used on the opperational project


Be proficient in working with at least one major library/framework		

Ability to implement and use state management tools if required."	"Able to understand and read legacy/new code from any technology framework, in order to make a switch depending on the project needs. (ex: React to Angular, or any new other library)


Able to make technology stack decisions based on project needs (usually at the beginning of project)

Initial project setup and FE architecture (folder structure, lint, naming)
		
Easily adopts changes or new Lib./FW		

Up-to-date with latest frameworks/libraries trends."
Testing	 Automated tests knowledge	"— unit & integration testing: MochaJS, Jest, Jasmine, ChaiJS, Karma, Enzyme
— E2E: Protractor, Selenium, WebDriver, Test Caffe, Cypress
— Contract testing (Pact)
— Test reporting tools
— Automate: pipeline integration"	"Can write tests based on already existing examples 
— Knowledge of playwright
— Additional

Knows difference between types of testing"	"Can create component testing, headless testing, unit testing, integration testing, e2e testing		

Knowhow regarding TDD vs BDD"	"Can setup an e2e testing infrastructure
— identify types of tests needed
— select test technology stack

Automation: integration in CI pipelines, test coverage, reports & alerts"". Can you explain each topic so i can understand what it's about? Also if you think there's also more topics which add alot of value to that you can explain those too