Javascript is a language

PHP programming language

CSS covers styling and layout in frontend development—how a website looks and adapts. It includes selectors and the cascade, box model, positioning and Flexbox/Grid, typography and colors, responsive design (media/container queries), animations/transitions, and building reusable UI themes and components.

Develop and maintain iOS mobile applications using UIKit and SwiftUI · Design and implement new features, optimize and refactor existing code

Tests for Python Development path

Soft skills

Frontend System Design is a hard skill—it’s about technical architecture. But it’s evaluated alongside soft skills (communication & trade-off reasoning). App architecture & state strategy (SPA/MPA, SSR/ISR, microfrontends) Performance budgets, caching, CDN/edge, code-splitting API contracts, schema/versioning, error handling & resiliency Design system architecture, accessibility, i18n Testing strategy, observability, security, and deployments

SQL Databases questions evaluate a candidate’s understanding of relational data, querying, joins, indexing, normalization, transactions, and performance optimization. These questions help assess how well a developer can design database structures, write efficient queries, and work with real-world data reliably.

Category focused on command-line skills, shell scripting, and everyday terminal usage for developers. It covers working with files, processes, permissions, pipes, redirection, and common Unix-like system commands used in real development and DevOps workflows.

Cybersecurity for Full-Stack developers, focused on interview preparation. Covers secure authentication and authorization, common web vulnerabilities, API and session security, frontend and backend attack vectors, data protection, and practical security decisions in modern full-stack applications.