How to Prepare for a FAANG Interview in 8 Weeks

Interview Prep

How to Prepare for a FAANG Interview in 8 Weeks

By Ntro.io · Updated July 2026 · 6 min read

To prepare for a FAANG interview in 8 weeks, you don't need 500 practice problems. You need a plan that builds skills in the right order and leaves time for mock rounds. Here's a realistic schedule with weekly hours and problem counts you can actually hit while holding down a job.

How the plan works

Eight weeks splits cleanly into four phases: fundamentals, patterns, mock rounds, and rest. The aim is steady reps, not heroics. Plan for about 10 to 12 hours a week. That's roughly 1.5 hours on weeknights plus a longer weekend block.

One rule matters more than the rest: redo problems you got wrong. Solving a problem once and moving on teaches you almost nothing. Coming back to it three days later is where the learning sticks

Phase 1 - Fundamentals (Weeks 1 ~ 2)

Rebuild the base. If you can't write a clean hash map solution from memory, you start here.

Week 1: Arrays, strings, hash maps, two pointers, big-O. ~15 easy problems. Pick one language and learn its core library cold.

Week 2: Linked lists, stacks, queues, sorting, binary search. ~18 problems, mostly easy moving into medium. Time the later ones at 25 minutes.

Phase 2 - Patterns (Weeks 3 ~ 5)

This is the heart of it. FAANG coding questions repeat a handful of patterns. Drill them one at a time.

Week 3: Trees and recursion. Traversals, depth, balanced checks. ~18 medium problems.

Week 4: Graphs and search. BFS, DFS, topological sort, union-find. ~18 medium problems.

Week 5: Dynamic programming, intervals, heaps. The hardest set. ~15 problems, and re-solve the ones you miss.

By the end of Week 5 you should have done around 80 problems and be able to name the pattern within a minute of reading a new one. That recognition is what saves you on the day.

Phase 3 - Mock rounds and behavioral (Weeks 6 ~ 7)

Now you practice the interview, not just the coding. Solving alone and solving while talking under a clock are different skills.

Week 6: 4 to 5 full 45-minute coding mocks. Talk out loud the whole time. Write 6 to 8 behavioral stories in STAR form, each with a number in the result.

Week 7: 3 more coding mocks plus 2 behavioral mocks. Re-solve your weakest pattern. Practice systems basics if your level calls for it.

Phase 4 - Rest and polish (Week 8)

Resist the urge to cram. Light review beats burning out.

Redo 10 problems you got wrong earlier. No new material.
Re-read your behavioral stories once a day so they feel natural.
Do one easy problem each morning to stay warm.
Sleep well the final two nights. A rested brain beats one more problem.

Quick tips to keep the plan on track

Track every problem in a sheet: name, pattern, and whether you nailed it.
Quality over count. 12 problems you fully understand beat 30 you skimmed.
Always state your approach and big-O out loud before coding.
If you fall behind a week, drop problem count, not mock rounds. Mocks matter most.

Mock rounds are where the plan pays off

You can study patterns for weeks and still freeze in a live round. The cure is realistic practice. Ntro.io is an AI tool that lets you run coding and behavioral mock interviews and get feedback on how clearly you explain yourself. It's rated 4.8★ on the Chrome Web Store. Use it to prepare, then solve and explain in your own words.

Practice FAANG interview

The takeaway

Eight weeks is enough if you spend it well. Build fundamentals, drill patterns, then practice the real thing with mocks and behavioral stories. Around 100 well-understood problems and a dozen mock rounds will get you walking in prepared, not panicked.

Ntro.io helps job seekers prepare for and practice interviews with real-time AI feedback.