Bloomberg Data Engineer Interview Guide

The Bloomberg data engineer loop, round by round: what each stage tests, example questions with the guidance interviewers actually score, the mistakes that sink strong candidates, and how to prepare.

Last updated: July 31, 2026Proudly published by: Jeff Wahl

Try a Bloomberg-style SQL round

Find every user active on 3 or more CONSECUTIVE days. This gaps-and-islands shape shows up in nearly every DE SQL round. Edit the query and run it against the seed data.

	/* Users active on 3+ consecutive days. */
	/* Hint: date minus a per-user ROW_NUMBER is constant within a streak. */
	WITH streaks AS (
	SELECT
	user_id,
	activity_date,
	activity_date - CAST(
	(ROW_NUMBER() OVER (
	PARTITION BY user_id
	ORDER BY activity_date
	))
	AS INT
	) AS grp
	FROM user_sessions
	)

	SELECT
	user_id
	FROM streaks
	GROUP BY user_id, grp
	HAVING COUNT(*) >= 3

Bloomberg is hiring data engineers now

The roles behind this loop. Prep against the levels and locations they are actually filling.

Hiring now

Bloomberg data engineer · live from career pages

open roles

New York

top metro

Build and maintain highly scalable, resilient and observable data pipelines supporting critical Commodities datasets

L5London21d ago

You will design and develop shared components, workflow patterns, and developer-facing systems that enable teams to deliver data pipelines with greater consistency, efficiency, and reliability.

L5New York35d ago

Design and build data pipelines to enable decision making through analytics

L5Arlington44d ago

Lead and develop a central team responsible for defining and delivering shared data infrastructure and reusable workflow patterns that improve consistency and efficiency across teams

L4New York59d ago

Build and enhance data pipelines and processes that powers Bloomberg’s Private Funds and Hedge Funds Databases, ensuring high data quality, consistency, and reliability.

L5New York79d ago

You are a data engineer who thrives in a highly collaborative environment, partnering with product, analytics, and engineering teams to deliver high-quality, trusted data.

L4Arlington89d ago

New postings per week

5/11

5/25

6/1

6/15

6/22

7/6

week beginning · ~10 weeks of data

Where they hire

New York

Washington DC

London

Levels hiring

L42L54

Updated Jul 31, 20269 open listings across 3 cities

Bloomberg compensation and culture

The numbers, tech stack, and team structure live on the company overview.

Data engineering at Bloomberg→

The role, comp by level, tech stack, teams, and culture signals.

Compare Bloomberg with other data engineering employers

How the role, pay, and loop stack up against peer companies.

Data engineering at Airbnb→

Compare the role, comp, and interview loop.

Data engineering at Amazon→

Compare the role, comp, and interview loop.

Data engineering at Apple→

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Data engineering at Databricks→

Compare the role, comp, and interview loop.

02 / Why practice

Prepare at Bloomberg interview difficulty

01
Reading a solution is not the same as writing one
Every engineer who has frozen on a query they had read a dozen times knows the gap. The only preparation that closes it is producing the answer yourself, under time, before the interview does it for you
02
76% of hiring managers reject on the coding task, not the resume
From HackerRank's 2024 Developer Skills Report. Candidates who look strong on paper still fail the live screen if they haven't done timed, executable practice
03
5 problem shapes cover 80% of data engineer loops
Dedup, sessionization, top-N-per-group, slowly-changing dimensions, partition tricks. Writing the shapes by hand turns the unfamiliar into pattern recognition

Practice Bloomberg-level SQL

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