Flatiron Health

ML Engineer Interview Experience - London, England

October 15, 2025

Positive ExperienceNo Offer

Process

Directly sent a HackerRank basic test.

Then a first technical interview.

Then four interviews in one day.

Interviews weren't too difficult; they also provided feedback on how you performed.

The bar is high, as my feedback wasn't too bad, but no offer.

Questions

Live code questions (typical CS)

Behavioural questions

ML concepts and code reading

ML product case study

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Interview Statistics

The following metrics were computed from 1 interview experience for the Flatiron Health ML Engineer role in London, England.

Success Rate

Pass Rate

Flatiron Health's interview process for their ML Engineer roles in London, England is extremely selective, failing the vast majority of engineers.

Experience Rating

Positive100%

Neutral0%

Negative0%

Candidates reported having very good feelings for Flatiron Health's ML Engineer interview process in London, England.

Flatiron Health Interview Questions

Letter Combinations of a Phone Number

Medium

Given a string of digits, return all possible letter combinations that the number could represent, using the typical phone keypad mapping. The goal is to generate all valid combinations in any order.

StringsRecursion

Ways to Make a Fair Array

Medium

You're given an array of numbers. Find how many ways you can remove a single element to make the sums of the even-indexed and odd-indexed elements equal.

ArraysDynamic Programming