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BlackRock interview questions

31 questions13 coding3 system design15 behavioral5 freeUpdated

This is every question in the BlackRock guide, in one list: 13 coding problems, 3 system designs and 15 behavioral questions, drawn from what candidates report about BlackRock interviews.

Each row shows the round it comes from and links to the lesson that works through it. 5 are free to read in full. The other 26 are Premium, and here you still see their round, difficulty and topic, so you know what you're walking into.

Open the BlackRock guide Unlock all 31

BlackRock coding interview questions

13 problems, in the order the guide teaches them. The 3 tagged OA are covered in the online assessment lessons. Each lesson gives the full problem, a worked solution and the follow-ups interviewers tend to add.

1Number of Bids: Cheapest Fill Per ProjectFreeOAMediumThe Online Assessment
2Target Exposure: Count Pairs Summing to a TargetFreeOAMediumThe Online Assessment
3Risk Calculators: Minimum Ticks to Clear the QueueFreeOAMediumThe Online Assessment
4Premium medium problemCodingMediumLow-Level Design & OOP
5Premium medium problemCodingMediumLow-Level Design & OOP
6Premium medium problemCodingMediumLow-Level Design & OOP
7Premium easy problemCodingEasyThe Core Coding Round
8Premium medium problemCodingMediumThe Core Coding Round
9Premium medium problemCodingMediumThe Core Coding Round
10Premium medium problemCodingMediumThe Core Coding Round
11Position ledger: fold trade fills exactly onceFreeSystem designMediumDesign a Finance Platform
12Premium medium problemSystem designMediumDesign a Parking Lot
13Premium medium problemSystem designMediumDesign a Producer-Consumer System

BlackRock system design interview questions

3 designs, each worked end to end in its own lesson, from requirements to the architecture and its trade-offs.

#Question
1Design a Finance PlatformFree
2Design a Parking Lot (Premium)
3Design a Producer-Consumer System (Premium)

A lock means the design is named here and its walkthrough is Premium.

BlackRock behavioral interview questions

15 questions, grouped by what the interviewer is testing. The lesson explains why each one gets asked and what a strong answer covers.

Why BlackRock, and the fiduciary mindset (3)

All 3 are Premium

Ownership and impact (3)

All 3 are Premium

Collaboration across investment and engineering teams (3)

All 3 are Premium

Working under scrutiny and regulation (3)

All 3 are Premium

Ambiguity, and making progress without a map (3)

All 3 are Premium

Read the BlackRock behavioral questions

See all 31 BlackRock questions by name

Premium opens the 26 locked questions on this page, each with the full prompt and a worked answer, and every other lesson in all 100 company guides.

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Common questions

How many questions are in the BlackRock interview guide?

31: 13 coding problems, 3 system designs and 15 behavioral questions. The guide was last updated in November 2026.

Which rounds do these BlackRock interview questions come from?

Of the 13 coding problems, 3 come from the online assessment, 7 from the coding rounds and 3 from the system design lessons. The 3 system designs and 15 behavioral questions come from the system design and behavioral rounds. Every row in the list carries its round, so you can start with the one you have booked.

Which BlackRock interview questions are free?

5 of the 31 are free to read in full, marked Free in the list. The other 26 come with Premium, which also opens all 100 company guides.