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Next batch — enrolling now 10 modules · 6 weeks

Ninja Coder — DSA & Interviews

Coding interviews mastered — Python, C++ and Java side by side.

Level Beginner+ to Advanced
Duration 6 weeks
Schedule Live cohort · 3 evenings a week · US-Eastern
Enrol now  → See curriculum  ↓
01 · What this is

Data structures, algorithms, problem-solving patterns and system design, taught in Python, C++ and Java at once so you can crack a FAANG-tier coding round in whichever language fits the problem.

A live cohort, taught in real timeLive cohort · 3 evenings a week · US-Eastern. You ask your question in the room and get the answer while it still matters.
The full curriculum, module by moduleTen modules built and taught by engineers who do this work — the syllabus below is all of it, with nothing held back for an upsell.
InfraBuild Labs platform accessYour seat includes — of access to the InfraBuild Labs platform. Its interactive lab content is DevOps-first today; this track is delivered as a live cohort plus the full curriculum.
Cohort fee
—

One payment for the seat, with — of InfraBuild Labs platform access included.

Enrol now  → Questions first? Talk to us  →

Checkout runs on the InfraBuild Labs platform. Every application is reviewed by hand, and your seat is confirmed once it is approved.

02 · Curriculum

The whole syllabus, up front

Six weeks, ten modules, in the order the rounds escalate — complexity first, then the structures, then the patterns, then the design round that decides senior offers.

10 modules · 6 weeks · taught live
01 Complexity & Mental Models

Big O, space vs time, recursion vs iteration, the whiteboard mindset, and the rubric graders actually use.

02 Arrays & Strings

Two pointers, sliding window, prefix sums, in-place transformations, and the patterns interviews reuse.

03 Hash Maps & Sets

Hashing fundamentals, collisions, when a map beats a set, and the classic problems built on them.

04 Linked Lists, Stacks & Queues

Fast/slow pointers, reversal, dummy heads, monotonic stacks, and queues for BFS.

05 Trees & Graphs

Binary trees, BSTs, all four traversals, graph representations, BFS and DFS, topological sort.

06 Recursion & Backtracking

Decision trees, pruning, permutations and combinations, N-queens, a sudoku solver.

07 Dynamic Programming

Memoisation vs tabulation, state design, the classic problems, and the pitfalls — the feared topic, demystified.

08 Greedy & Heaps

When greedy is provably right, priority queues, top-K problems, scheduling.

09 Tries, Union-Find & Segment Trees

Beyond the basics — the structures senior and L5/L6 rounds actually ask for.

10 System Design for Interviews

URL shortener, rate limiter, chat app, news feed — the rounds that decide senior offers.

03 · Tool stack

What you will actually touch

Three languages side by side, the judges your solutions are graded on, and the tools you will be thinking out loud with.

Python 3 C++ 17 Java 21 LeetCode HackerRank VS Code Git Excalidraw Online judges Mock interviews
04 · Who this is for

Four kinds of people end up in this room

If one of these sounds like you, you will be in the right cohort. If none of them do, tell us and we will point you at the track that fits.

Students

Crack campus placements and on-campus FAANG interviews.

Working engineers

Move from a mid-tier company to FAANG, a unicorn or a Series-B+ startup.

Career switchers

Prepare for entry into competitive software roles.

Anyone interviewing now

Short, intense and results-focused.

05 · Outcomes

What you will be able to do

Not topics covered — things you can do on your own once the six weeks are behind you.

06 · Careers

Roles this leads to

The job titles this curriculum is built against. We teach to the work these roles do, not to a certificate.

Software Engineer (FAANG-tier) Backend Engineer Algorithms Engineer Senior Software Engineer Competitive Programmer
07 · Questions

Before you enrol

The things people ask us on the call, answered here so you do not have to book one first.

Do I need experience before I start?
Beginner+ to Advanced, and that spread is deliberate — Module 01 begins at Big O, recursion versus iteration and the rubric a grader actually scores against, while Module 09 goes as far as segment trees. What you do need is to be able to write code in at least one of Python, C++ or Java. The track teaches the three side by side; it does not teach you your first language.
When does the next cohort run?
Next batch — enrolling now. It runs for 6 weeks — Live cohort · 3 evenings a week · US-Eastern. We confirm your exact start date when your application is approved.
Are the classes live, or recorded video?
Live. The schedule above is real class time with an instructor in the room — you interrupt, you ask, you get an answer. That is the whole reason this is sold as a cohort and not as a video library.
How much of this is hands-on?
Every module is worked through with the instructor, problem by problem, and the outcomes above are what you should be able to do unaided by the end. To be exact about what a seat buys: a live cohort, the full curriculum, and access to the InfraBuild Labs platform. The platform's interactive lab content is DevOps-first today — we would rather say so here than let you find out later.
What is InfraBuild Labs, and how long do I keep it?
It is our own lab platform: browser terminals wired to real machines, guided exercises and per-task verification. Its interactive content is DevOps-first today, so on this track treat it as the environment you practise and build in rather than a second copy of this syllabus. Your seat includes — of access.
How does enrolment actually work?
Four steps. You apply on the labs platform and pick this track. You pay for the seat — a partner referral code comes off the price at that point. We review the application by hand. Once you are approved you get your labs account and the cohort schedule, and you start.
A partner gave me a referral code — where does it go?
If you arrived on a link carrying the code, it is already applied: you can see it on the price above, and it stays with you for thirty days even if you close the tab. If you have a code but no link, enter it at checkout. Either way the platform is the authority on what it is worth — the figure you see here comes from it, not from this page.
Which language should I write the interview in?
Whichever fits the problem, which is exactly why all three are taught at once. Python gets a correct solution down fastest and reads well out loud; C++ is what you reach for when the time limit is tight or the problem wants the containers; Java is what a number of shops still ask you to use. Every structure in the course is implemented in all three, so on the day the language is one less thing to decide.
Do you help with interviews and the job search?
That is a separate service, deliberately. The bootcamp buys you the skill and the work to show for it; our Career Solutions line covers resume and LinkedIn work, mock interviews and application support. Ask us and we will tell you honestly whether you need it yet.

Take the seat

The next batch is enrolling now. Three evenings a week, six weeks, and 200+ problems and a system-design round behind you by the end of it.

Enrol now  → Talk to us first