BlackRock·Full Stack Engineer

BlackRock Full Stack Engineer interview experience

No offer

Medium

Positive

London, EnglandPosted Dec 2025 · Candidate report, summarized by Dataford

I started with a recruiter chat where we covered my best achievements and got into a payment-domain question.

After that, I moved to a technical interview that blended a lot of systems knowledge and Java depth with a live coding task. They asked about patterns related to microservices and DevOps, then went into cloud topics, plus core Java areas like garbage collection and collections. They also touched Spring and Hibernate.

The coding portion was a LeetCode-medium style problem focused on processing a FIX protocol message. I had to reason through the approach live, and the rest of the time felt like a deep dive into how I thought about tradeoffs—almost like they wanted to see whether I could

Create a free Dataford account to unlock the full round-by-round breakdown, the questions asked and the outcome.

Read the full report Read the full report

Preparing for this interview?

BlackRock Full Stack Engineer interview guideThe full process, round by round, with the question bank Practice Full Stack Engineer interview questionsReal questions from this role across companies All BlackRock interview guidesEvery role we cover at this company