TikTok software engineering interview questions

The Process

Five rounds, scheduled one at a time, and each one is a gate

01

30 minPhone or Lark

Recruiter screen

Not a formality. The recruiter fixes the ByteDance job grade you will be measured against, and every round after this one is calibrated to that grade.

Ask which grade you are being run at.
Grades run 1-1 to 4-2 and are never printed in the job ad. Recruiters will tell you if you ask plainly, and it changes the whole loop.
Ask how many rounds, not how long.
Rounds are booked one at a time and only after you clear the previous one, so five rounds can stretch across a month.
Give one total compensation number.
About a fifth of the offer is private ByteDance stock and a tenth is a target annual bonus. Anchoring on base alone gives away both.

02

60 minLark video

First coding round

Two problems in sixty minutes, sometimes three. The baseline is medium and the second problem is almost always the one that decides the round.

Get to working code, then explain.
TikTok scores the correct optimal answer more heavily than the journey. Narration matters, but not at the cost of finishing.
Budget the first problem at 25 minutes.
Candidates who spend forty minutes on problem one never reach problem two, and an unfinished second problem reads as a fail.
Your interviewer may be ten hours away.
Many TikTok interviewers sit in Singapore or Beijing, so calls land early or late and the audio is sometimes the hard part.

03

60 minLark videoNo AI tools

Second coding round

The same shape again with a different engineer who has not read the first write up. From grade 2-2 upward one of the two problems is usually a hard.

Hards stop being rare at senior.
Graphs, dynamic programming and awkward string work. The medium only reputation holds at 2-1 and breaks above it.
Nothing carries over from round one.
Each interviewer scores independently and files before the next is booked, so a strong first round buys you no credit here.
Read the constraints back out loud.
Problems arrive verbally over video more often than in writing. Repeat the input bounds before you touch the keyboard.

04

60 to 75 minDeep diveOften more coding

Hiring manager round

The manager tests fit against the team's actual work and usually adds another coding problem on top of the project discussion. Scope and ownership get probed hard.

Bring numbers, including the bad ones.
Latency, cost, retention, whatever the team optimises. A project with no figures attached reads as somebody else's work.
Know which org you are talking to.
Recommendation, ads, e-commerce and infrastructure interview very differently. Ask the recruiter before the call, not after.
Shipping speed is a scored trait.
Always Day 1 is not decoration. The manager is listening for how fast you go from an idea to something in production.

05

30 to 45 minThen 1 to 3 weeks

HR and ByteStyle round

A separately scored interview with an HR business partner against the six ByteStyles, not a wrap up call. Candidates are rejected here after clearing every technical round.

Learn the six ByteStyle principles.
Always Day 1, Champion Diversity and Inclusion, Be Candid and Clear, Seek Truth and Be Pragmatic, Be Courageous and Aim for the Highest, Grow Together.
Candid and clear means say the number.
Vagueness about what you expect to be paid reads as evasive in a round that is explicitly scoring directness.
Cross timezone work gets tested.
Most TikTok teams span the US, Singapore and China. Expect a question about working with people you never overlap with.

Levels and Pay

The stock is private and only sellable twice a year

Pick a level to see how the package splits, what changes by city, and what the loop actually asks of you at that band.

San Jose

Seattle

New York

Los Angeles

Level	Experience	Total comp
Software Engineer1-2Entry	0 to 2 yrs	~$200K
Software Engineer2-1Mid	2 to 5 yrs	~$295K
Senior Engineer2-2Senior	5 to 8 yrs	~$395K
Staff Engineer3-1Staff	8 to 12 yrs	~$570K
Senior Staff3-2Sr Staff	12+ yrs	~$830K

Figures shown at San Jose, where most of TikTok's US engineering sits. The Culver City address above is the US head office, which is a different place.

TikTok's US business was restructured in January 2026 into TikTok USDS Joint Venture LLC and TT Commerce and Global Services LLC. How equity is granted to US staff after that restructuring is not publicly established. The figures above describe ByteDance Ltd RSUs as granted before it, so ask in the offer conversation which entity is granting and in what.

Live Question Feed

What TikTok is asking right now

71 questions · new ones added every 7 days

71 Verified

CODING

Longest substring with at most k distinct characters, then adapt the same window to a live event stream.

First coding round

60 min

Lark video

Reported 11 times

Open

SYSTEM DESIGN

Design the For You ranking path: candidate generation, feature store, model serving and interaction logging.

Locked

BYTESTYLE

Tell me about something you shipped in under a week that you would build differently now.

Locked

CODING

Merge k sorted interaction logs and return the first n events under a fixed memory budget.

Locked

SYSTEM DESIGN

Design short video upload and delivery: chunked upload, transcode fan out, and edge caching under 200ms.

Locked

DEEP DIVE

Walk through a system you owned and defend the decision you now believe was wrong.

Locked

CODING

Word ladder: return every shortest transformation sequence, then justify BFS over DFS here.

Locked

CODING

Implement an LRU cache with O(1) get and put, then make it safe under concurrent reads.

Locked

BYTESTYLE

How do you keep a project moving when half the team is eleven hours ahead of you?

Locked

70 more questions available

The exact questions TikTok is asking this week, tagged by round and difficulty.

Unlock All 71 Questions

Each question stays in the bank for 14 days, so everything here was asked in the last 14 days. Candidates who see them first pass at 3.2 times the normal rate.

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The Unfair Advantage

Why this actually works

01

Real questions, not guesses

Collected from engineers who sat the loop, then cross validated against other intel sources.

02

Fresh every week

The database updates every 7 days, so you never study stale problems.

03

Covers every round

Multi problem coding rounds, recommendation and video delivery design, the manager deep dive and the ByteStyle round.

04

120+ companies tracked

Also interviewing at Meta, Snap or Pinterest? We have their questions too.

05

Difficulty and pattern data

Tagged by difficulty, round and category, so you know where prep time goes.

06

Candidate verified only

Reported by a candidate, then cross verified against multiple data points.

3.2×

Higher pass rate

120+

Companies tracked

3.2K+

Engineers using this

FAQ

Common questions

How are the questions sourced?

Directly from engineers who interviewed at TikTok, then cross validated against other intel sources into a stack ranked list.

How often are questions updated?

We add new questions every 7 days and retire each one after 14 days, so the bank turns over twice in the window it covers. TikTok burns through its coding bank faster than most, because two or three problems per round means far more of it gets used.

Does TikTok ask LeetCode questions?

More than almost anyone. Two to three problems per coding round against one or two at most large companies, with the baseline at medium and hards normal from grade 2-2 up.

Can I use AI tools in the interview?

No. Every coding round is live over video in a shared editor with the interviewer watching you type, so there is nowhere to hide one.

What is the ByteStyle round?

A separately scored interview with an HR business partner against the six ByteStyles. People are rejected there after clearing every technical round, so do not treat it as a formality.

What does TikTok pay a Software Engineer at grade 2-1?

Around $295K at grade 2-1 in San Jose, about $260K in Seattle. Roughly a sixth is ByteDance stock you can only sell in the twice yearly buyback.

How long does the process take?

Four to eight weeks is normal. Rounds are booked one at a time, so every pass adds days before the next one is scheduled.

Is this just for TikTok?

No. GothamLoop covers 120+ companies including Meta, Google, OpenAI, Amazon and Apple.

The TikTok interview cheat code nobody talks about

Five rounds, scheduled one at a time, and each one is a gate

Recruiter screen

First coding round

Second coding round

Hiring manager round

HR and ByteStyle round

The stock is private and only sellable twice a year

What TikTok is asking right now

Why this actually works

Real questions, not guesses

Fresh every week

Covers every round

120+ companies tracked

Difficulty and pattern data

Candidate verified only

Common questions

Pricing plan

Company Interview Guides