Companies
Skip to content
    
All companies

Finance

BlackRock DSA Interview Questions

BlackRock pairs medium-hard DSA with data-modelling and design questions on portfolio and risk analytics, plus a strong Python or C++ round.

Dynamic ProgrammingBinary SearchTwo PointersSortingStackBreadth-First Search

17 real interview questions actually asked at BlackRock — filter by how recently they were reported.

0%

0/4

Overall progress

0 / 4

0/1

Easy

0/3

Medium

0/0

Hard

Asked in

What BlackRock asks in the DSA round

BlackRock pairs medium-hard DSA with data-modelling and design questions on portfolio and risk analytics, plus a strong Python or C++ round.

Across the 17 questions on this page, the weight sits on these patterns:

How to prepare for the BlackRock interview

  1. 1. Start at the top of the list above. The patterns are ordered by how often BlackRock uses them, so the first two or three buy you the most coverage per hour.
  2. 2. Solve by pattern, not at random. Doing eight dynamic programming problems in a row is what makes the ninth recognisable in an interview — jumping between topics does not.
  3. 3. Tick problems off as you go so the gaps are visible. The per-pattern counts tell you which BlackRock topic you have actually covered.
  4. 4. Write the approach before the code. BlackRock interviews are judged on the reasoning as much as the working solution.
  5. 5. Pair this with the pattern guides when a topic is new, and the system design sheet if the role is senior enough to have that round.
  6. 6. If this is a campus or off-campus drive rather than a lateral move, the placement preparation guide covers the stages around the DSA round — aptitude, core subjects and the HR interview — in the order they actually happen.

BlackRock interview questions — FAQ

How many DSA questions does BlackRock ask?

This sheet collects 17 BlackRock interview questions, grouped into 10 patterns. They are questions reported as actually asked in BlackRock interviews, and each one carries how recently it was reported so you can practise the current set first.

Which topics should I focus on for a BlackRock interview?

Dynamic Programming, Binary Search, Two Pointers come first — the patterns on this page are ordered by how often BlackRock leans on them, so working top-down spends your time where the interview actually is. The full order is Dynamic Programming, Binary Search, Two Pointers, Sorting, Stack, Breadth-First Search.

How long does it take to finish the BlackRock sheet?

At roughly 25 minutes per problem — reading it, solving it and writing the approach down — 17 problems is about 7 hours, or 1 weeks at ten hours a week. Most people do not need all of it: the first two or three patterns cover the majority of what gets asked.

Is this BlackRock question sheet free?

Yes. Every problem, the pattern grouping and the progress tracking are free and need no account. Progress saves in your browser, and signing in with Google only adds syncing across devices.

Can I track which BlackRock questions I have solved?

Yes — tick a problem on this page and it stays ticked. The counts per pattern update as you go, so you can see which of BlackRock's topics you have actually covered rather than guessing.

Related

Agoda DSA Questions

45+ problems. Overlapping patterns — worth doing alongside BlackRock.

Snap DSA Questions

86+ problems. Overlapping patterns — worth doing alongside BlackRock.

Jane Street DSA Questions

16+ problems. Overlapping patterns — worth doing alongside BlackRock.