Agent Ambo · Upskill
Full Stack Developer interview cheat sheet
The Full Stack Developer facts interviewers expect you to know cold. Ten minutes of revision the night before.
AmboQuick revision
- REST verbs
- GET read, POST create, PUT replace, PATCH update, DELETE remove.
- JWT
- Signed token with claims; verify the signature, check expiry, use refresh tokens.
- Cookie vs localStorage
- HttpOnly cookies resist XSS; localStorage is readable by any script.
- CORS
- Browsers block cross-origin requests unless the server allows them.
- Index
- Speeds reads, slows writes; index columns you filter and join on.
- N+1 queries
- One query per row in a loop; fix with joins or batching.
- SQL vs NoSQL
- SQL for relations and transactions; NoSQL for flexible or very large data.
- Caching
- Cache frequent reads (Redis); decide how and when to invalidate.
- 12-factor config
- Keep config and secrets in the environment, not in code.
- Status codes
- 401 not authenticated; 403 authenticated but not allowed.
Must-know topics
Rehearse these out loud
- How does JWT authentication work, and where do you store the token?
- Design the database for a simple e-commerce cart.
- Your API is slow under load. What do you do?
Revision is good. Practice is better.
- 1Ambo reads your resumeYour skills, projects, years and the role you want next.
- 2Then where you’re interviewingAnd how interviewers there question people like you.
- 3It maps every topic they could askMust-know first, your own projects included, built into short daily lessons.
- 4You practise, then get certifiedInterview Q&A after every lesson, then three proctored rounds ending in a voice interview with Ambo.
Questions, answered.
How should I use this Full Stack Developer cheat sheet?
Revise it the night before and the morning of your interview, then say each answer out loud. It covers REST verbs, JWT and Cookie vs localStorage and more.
Is a cheat sheet enough to clear the interview?
It helps you recall facts quickly, but interviewers test how you apply them and follow up on your answers. Practise answering, not just reading.
How is this different from a list of interview questions?
A list is the same for everyone. Ambo builds your course from your resume, your target role and where you're interviewing, then writes every lesson from the interviewer's point of view: what they'll ask, a strong answer, and the follow-up they'll use to test you.
What is the certification test?
Three camera-proctored rounds that unlock one after another: an objective round, a hands-on round (coding or practical tasks for your role) and a voice interview with Ambo, who asks live follow-ups on your answers. Pass all three within 14 days to become TickBig Certified for 12 months.
Revise it, then rehearse it.
Ambo interviews you on Full Stack Developer topics and follows up on what you say.