Solid proficiency with JavaScript (ES6+) and TypeScript
Strong experience with React and its ecosystem
Experience with state management solutions (MobX, MobX, or similar)
Understanding of component architecture and reusable UI patterns
Experience with CSS / SCSS, CSS modules, or similar styling approaches
Experience working with design systems or component libraries
Understanding of browser APIs, event loop, rendering lifecycle
Experience consuming and integrating REST APIs on the client side
Experience writing unit tests (Jest or similar)
Understanding of HTTP protocol and client-server communication
Awareness of web accessibility basics
Familiarity with common web security threats (XSS, CSRF)
Proficient understanding of Git
Systematic approach to problem-solving
Competent English (reading, writing)

Will definitely be a plus:

Experience with MobX specifically
Experience with dependency injection in frontend (Inversify or similar)
Experience with internationalization (react-intl or similar)
Basic Node.js / Express knowledge
Basic understanding of SQL and relational databases
Experience with E2E testing (Playwright, Cypress, or similar)
Competent spoken English

What’s in it for you?

Opportunity to deal with top-notch technologies and approaches in a world-leader product company with millions of customers
Opportunity to make a difference for online privacy, freedom of speech, and net neutrality
Decent market rate compensation depending on experience and skills
Developed corporate culture: no micromanagement, culture based on principles of truth, trust, and transparency
“You build it, you own it” mentality in most contexts
Support of personal and professional development
coverage of costs of external trainings, conferences, professional literature
support of experienced colleagues
in-house events and training