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Deep dive into database and messaging system internals — PostgreSQL, MongoDB, Redis, RabbitMQ, Kafka. Covers storage engines, replication, consistency, perfo...

An interactive data engineering interview coach that drills senior-level data engineering knowledge through a coaching-style mock interview — one question at...

An interactive coach that teaches English writing by genre conventions, guides planning and drafting, and gives detailed feedback on content, coherence, voca...

Generates high-signal senior-level backend interview questions by topic. Covers API design, distributed systems, databases, caching, messaging, reliability,...

Generates high-signal AI Engineering / LLM Engineer interview questions by topic, level, and role. Covers LLM fundamentals, prompt engineering, RAG, vector D...

Daily IELTS practice coach targeting Band 6.0–6.5. Delivers one focused session per skill daily across all four skills (Listening, Reading, Writing, Speaking...

Interactive English listening and dictation practice using real ESL content, with personalized feedback, vocabulary teaching, and comprehension exercises.

Search ITviec, TopDev, ITJobs, and TopCV for the latest full-stack developer job listings using Firecrawl. Finds jobs with React, Next.js, TypeScript, Node.j...