What is SDET Interview Coach?

SDET Interview Coach is a mobile interview preparation app for Software Development Engineers in Test. It includes an 800+ question bank covering 32 topics, timed mock interviews across five seniority levels, AI-graded answer feedback, a Job Match feature that generates bespoke questions from a real job description, spaced repetition for long-term retention, and dedicated learning paths for manual QAs transitioning to SDET roles.

How does the Job Match feature work?

You paste a job description (or upload a PDF, or photograph it), and the AI extracts the skill tags, frameworks, and seniority level from the JD. It then generates 50 interview questions tailored specifically to that role — matching the exact tech stack and level of the position you're applying for. Raw documents are never stored, only anonymised tags.

Is SDET Interview Coach suitable for manual testers transitioning to automation?

Yes, it was specifically built with this transition in mind. The onboarding assessment lets you identify as a manual QA, and the app reorganises around that — surfacing junior-level content, providing a dedicated QA→SDET career-change mock interview level, and offering bootcamp tracks where AI mentors explain automation concepts using language manual testers already understand.

Does the app cover AI in testing topics?

Yes. SDET Interview Coach has a dedicated AI in Testing category covering Playwright MCP (Model Context Protocol), LLM-powered test generation, prompt injection testing, self-healing locator strategies, AI test review, RAG testing, and AI agents. These are increasingly common in SDET interviews and most candidates are unprepared for them.

How does the spaced repetition system help with interview prep?

The SM-2 spaced repetition algorithm tracks which questions you answer confidently, partially, or not at all. Questions you struggle with reappear sooner, while mastered questions surface less frequently. This ensures you retain technical knowledge long-term rather than cramming the night before an interview and forgetting everything afterwards.

SDET Interview Coach — The Mobile App That Prepares You for Real SDET Interviews

The SDET interview is unlike any other technical interview. You're tested on coding, test strategy, framework design, CI/CD, behavioural scenarios, and increasingly — AI in testing. Most candidates walk in underprepared because generic interview prep resources don't cover the breadth of what real interviewers ask.

SDET Interview Coach was built to solve this — by an SDET with 20 years of experience hiring and being hired. It's a mobile app that prepares you for exactly what interviewers ask, in the format they ask it, with feedback that points at your gaps.

What Makes SDET Interview Coach Different

Most SDET interview prep goes like this: you Google "SDET interview questions," find a listicle of 20 generic questions with one-sentence answers, and hope for the best. That's not how real interviews work.

SDET Interview Coach takes a structured, multi-layered approach:

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800+ Question Bank Across 32 Topics

Every question includes a short answer, detailed long answer, code samples in the relevant language, follow-up questions an interviewer would ask, watch-outs for common mistakes, and real-world context. The bank grows every night with ~150 new AI-generated questions.

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Mock Interviews That Feel Real

Five seniority levels from Junior to Lead, plus a dedicated QA→SDET career-change track. Timed sessions with adaptive follow-ups mirror the pressure of a real on-site loop. Six tech stacks to choose from including Playwright, Selenium, and AI-native testing.

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AI-Graded Answer Feedback

Type your answer to any question and get instant feedback scored across four dimensions: technical accuracy, completeness, communication, and code quality. Learn not just what to say, but how to say it the way interviewers expect.

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Job Match — Bespoke Questions for Your Role

Paste a real job description (or photograph it) and the AI generates 50 interview questions tailored to that exact role — matching the stack, seniority, and frameworks in the JD you're applying for.

Built for the Manual QA → SDET Transition

The hardest jump in software testing isn't learning a new framework — it's learning to think like an SDET. Manual testers know how to find bugs. They don't necessarily know how to articulate test strategy, discuss flakiness root causes, or explain why they'd choose Playwright over Selenium for a given project.

SDET Interview Coach bridges this gap with features built specifically for career changers:

Onboarding assessment — tell the app you're a manual QA targeting junior SDET, and it reorganises around you. No wading through Lead-level content.
QA→SDET mock interview — 50-minute sessions with questions that bridge existing testing knowledge with automation concepts.
Bootcamp tracks with AI mentors — Playwright + TypeScript for QAs, Playwright + Python, and more. The AI mentor meets you at your level and walks through concepts step by step.
Spaced repetition system — questions you get wrong come back at the right interval so automation concepts stick long-term, not just for 24 hours of cramming.

AI in Testing — The Category Interviewers Are Adding Right Now

By late 2026, AI-in-testing questions will be standard in SDET interviews. Most candidates haven't prepared for them at all. SDET Interview Coach covers:

Playwright MCP

How Model Context Protocol enables autonomous browser testing with Claude AI. What MCP means for test architecture and how to discuss it in interviews.

LLM Test Generation

How to evaluate AI-generated tests, when to trust them, when to override, and how to build a human-in-the-loop review process that scales.

Prompt Injection Testing

Testing AI systems for prompt injection vulnerabilities. An entirely new testing discipline that forward-thinking organisations are already hiring for.

Self-Healing Locators

How AI-powered locator strategies work, the tradeoffs between reliability and fragility, and how to discuss them credibly with a technical interviewer.

Spaced Repetition — Why Last-Minute Cramming Fails

Interview prep isn't a memorisation exercise. If you cram 50 questions the night before and get the job, you still need to perform on day one. The spaced repetition engine in SDET Interview Coach is calibrated specifically for technical interview prep:

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Questions You Get Wrong Come Back Sooner

The SM-2 algorithm adjusts intervals based on your self-grading (Confident, Partial, Don't Know). Weak areas surface more frequently until you've mastered them.

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Topic Heatmaps Show Your Gaps

The progress dashboard visualises which topics are strong and which need work. No guessing where to focus your study time.

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Activity Calendar Tracks Consistency

GitHub-style contribution grid showing your daily practice. Streak milestones at 7, 30, 100, and 365 days keep motivation high.

What Sets SDET Interview Coach Apart

Feature	Generic Prep Sites	SDET Interview Coach
Question format	One-line answers	Short answer + long answer + code + follow-ups + watch-outs
AI feedback	Multiple choice quizzes	4-dimension scored feedback on your written answers
Job-specific prep	None	Job Match generates 50 questions from your actual JD
Mock interviews	Static Q&A lists	Timed sessions with adaptive follow-ups, 5 seniority levels
AI in testing	Not covered	Dedicated category: MCP, LLM test gen, prompt injection
QA→SDET track	Doesn't exist	Career-change mock level + bootcamp tracks + onboarding
Spaced repetition	None	SM-2 algorithm calibrated for technical interview retention

Get Started with SDET Interview Coach

Whether you're a manual QA making the leap to automation, a mid-level SDET targeting a senior role, or a lead preparing for a principal interview — the app adapts to where you are and builds a path from there.

Available on the iOS App Store. The onboarding assessment takes 2 minutes. After that, every question, every mock interview, and every recommendation is tuned to your role, your stack, and your goals.

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By Mitchell Agoma, Senior SDET & AI Testing Specialist with 8+ years of experience