SDET Interview Coach vs CELPIP Prep 2026

SDET Interview Coach is the most comprehensive mobile interview prep app for Software Development Engineers in Test, QA Automation Engineers, and Test Engineers — from junior to staff level. Built by a 20-year SDET who has hired and been hired across Playwright, Selenium, Cypress, Java, Python, TypeScript, REST-assured, k6, JMeter, pytest, Jest, and AI-native testing. WHAT YOU GET • 800+ practitioner-grade SDET interview questions, sortable by seniority (Junior → Lead) and stack (Playwright, Selenium, Java, Python, TypeScript, AI-native) • Real mock interview scenarios — 8 to 15 questions in a timed session, mixed by difficulty, just like the real loop • Self-grading + spaced repetition — questions you got wrong come back at the right interval, so you actually learn instead of forgetting • AI feedback on every answer, written like a senior teammate at the whiteboard AI BOOTCAMP TRACKS (NEW) For manual QAs transitioning to SDET / Automation roles: • Playwright with TypeScript — the modern automation default • Playwright with Python — for Python-stack teams • JMeter performance testing • CI/CD pipelines for testers • API & contract testing Each track has scenario-based AI coaching that adapts to your level. Tap "Ask the Coach" inside any track for follow-up questions in plain English. JOB MATCH Paste a real job description and your CV. Get 25 bespoke interview questions tailored to the role plus a panel briefing on what to expect. 60-second turnaround. WEEKLY CHALLENGE Timed practice with the global community. New theme every Monday — drill on flaky tests one week, contract testing the next. ASK SDET COACH An AI tutor for any test-automation question. No more Stack Overflow rabbit holes when you're stuck on Playwright fixtures, Selenium waits, or k6 scripting. WHO IT'S FOR • Manual QA engineers transitioning to SDET / Automation • Junior SDETs prepping for their first promotion interview • Mid / Senior SDETs interviewing at a new company and shaking off the rust • Lead SDETs cramming for a system-design or framework-architecture round • Career changers entering software quality engineering THE QUESTIONS Each question has a short answer (the real answer, not a preview), a long-form explanation with tradeoffs and gotchas, code samples, follow-up questions the interviewer might ask, and watch-outs (anti-patterns to avoid). Written like a senior teammate, not a textbook. PRO FEATURES (£4.99/month after 7-day free trial) • Full 800+ question bank, refreshed nightly • Unlimited mock interviews + spaced repetition • Job Match — bespoke prep from any JD • AI feedback on every answer • All five AI Bootcamp Tracks • Monthly content drops as the SDET landscape evolves LITE PRICING Lower-income regions get the same core features at $2.99/month — because interview prep shouldn't be locked behind a Western salary. Privacy: we don't sell your data, don't run ads, don't track you across apps. Your answers and progress are yours. Support: support@sdetcoach.com Subscriptions auto-renew at the listed price unless cancelled at least 24h before the period ends. Manage or cancel in iPhone Settings → Apple ID → Subscriptions. Terms of Use (EULA): https://sdetcoach.com/terms Privacy Policy: https://sdetcoach.com/privacy

Preparing for CELPIP on your own can leave you guessing - especially in Speaking and Writing. LangPrep turns every practice session into a clear next step. Record or submit your answer, receive AI-powered feedback, see your estimated CELPIP Level, and focus on the skills that can move your result. AI SPEAKING PRACTICE • Practice all 8 CELPIP Speaking tasks: Giving Advice; Talking about a Personal Experience; Describing a Scene; Making Predictions; Comparing and Persuading; Dealing with a Difficult Situation; Expressing Opinions; and Describing an Unusual Situation • Train with exam-style preparation and response timers • Get instant feedback on Content/Coherence, Vocabulary, Listenability, and Task Fulfillment • See strengths, areas to improve, and an estimated CELPIP Level after practice AI WRITING PRACTICE • Practice Task 1: Writing an Email and Task 2: Responding to Survey Questions • Get AI feedback on task fulfillment, organization, vocabulary, grammar, and readability • Learn from clear corrections and stronger response suggestions • Build confidence before test day with targeted CELPIP writing practice LISTENING & READING PRACTICE • Train with CELPIP listening and reading questions based on everyday, workplace, and community situations • Practice the major question types from CELPIP-General • Use timed practice to improve comprehension, accuracy, and speed • Review answers and learn from mistakes CELPIP PRACTICE TESTS & LEVEL TRACKING • Take exam-style CELPIP sample tests and mock test practice • Follow your estimated Level and progress over time • Focus on weak skills and work toward your target Level • Prepare for the fully computer-delivered test experience EXAM GUIDE, VOCABULARY & STRATEGIES • Complete guide to CELPIP-General format and task types • Score-building strategies for Speaking, Writing, Listening, and Reading • CELPIP vocabulary tips for everyday and workplace English • Common mistakes explained so you know what to avoid MADE FOR YOUR GOAL Whether you are aiming for CELPIP Level 7, Level 9, or higher for Canadian permanent residence, citizenship, professional designation, work, or study, LangPrep helps you practice with purpose. Prepare for CELPIP-General across all four skills, or strengthen Listening and Speaking for CELPIP-General LS. WHO IS LANGPREP FOR? • People preparing at home without a tutor • Busy learners who need flexible daily CELPIP practice • Test takers retaking one or more skills • Beginners who want a clear way to start • Anyone who wants realistic CELPIP test prep, AI feedback, and measurable progress Start your CELPIP prep today. Download LangPrep, practice with realistic exam-style tasks, discover what to improve, and move toward your target CELPIP Level with confidence. Subscription Terms: Payment will be charged to your Apple Account once the purchase is confirmed. Unless canceled at least 24 hours before the end of the current billing period, the subscription will renew automatically. You can manage or cancel your subscription at any time through your App Store account settings. Where applicable, any unused portion of a free trial will be lost when a subscription is purchased. Refund requests are processed by Apple and must be submitted through your App Store account. Privacy Policy: https://langprep.online/privacy Terms of Use: https://langprep.online/terms