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Data Engineering Intern OR Student Co-Op

Marmon Holdings · Milwaukee, WI · Full time

Posted Sep 18, 2025 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a data project you built in school or on your own. Where did the data come from and where did it end up?

What they are checking: Whether they have moved data through a pipeline end to end, not just analyzed a clean file.

Tell me about a time you got stuck on a technical problem. How long did you wait before asking for help?

What they are checking: Whether they balance independence with asking questions, a key intern skill.

How would you explain what a data pipeline does to someone in marketing?

What they are checking: Whether they can talk about technical work in plain language to non-technical coworkers.

What do you hope to learn on the data team, and what would make this internship a success for you?

What they are checking: Their motivation and whether their goals line up with the team's work.

What would you do

You load a file and the row counts do not match the source. How would you track down the problem?

What they are checking: Debugging instinct and attention to data quality, which matters more than speed for an intern.

DCI Marketing works with retail displays and audit data. What kinds of data do you think a retail merchandising company collects?

What they are checking: Curiosity about the business and how data supports retail environments and brand programs.

About the work

Write out loud a SQL query to find the top five stores by sales last month. What would you watch out for?

What they are checking: Core SQL comfort with grouping, filtering and ordering, which data engineers use daily.

What is the difference between a data warehouse and a data lake, in your own words?

What they are checking: Basic data architecture vocabulary they will hear on day one.

What Python have you used for working with data, and what libraries do you reach for?

What they are checking: Whether they can script data cleaning and loading tasks without heavy help.

How do you keep your code organized and understandable for someone else?

What they are checking: Habits like version control and documentation that make an intern's work usable after they leave.

Practice this interview out loud.

Offer builds a real interview for this exact role at Marmon Holdings from your resume and this job description, asks the questions one at a time, and tells you what landed. The first one is free.

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The full job description

As published by Marmon Holdings.

DCI Marketing, Inc. As a part of the global industrial organization Marmon Holdings—which is backed by Berkshire Hathaway— you’ll be doing things that matter, leading at every level, and winning a better way. We’re committed to making a positive impact on the world, providing you with diverse learning and working opportunities, and fostering a culture where everyone’s empowered to be their best. DCI Marketing is reimagining how brands engage with retail customers. We design and deliver immersive environments that bring automotive and consumer brands to life, combining physical fixtures with digital experiences backed by data. Together, these elements transform retail spaces into powerful drivers of growth. Our people are problem-solvers who turn complex challenges into experiences that feel purposeful and built for growth. As part of Marmon Holdings, Inc., a Berkshire Hathaway company, we bring the resources and stability of a global organization to our craft-driven, agile team. DCI Marketing develops retail merchandising solutions for global brands and retailers. Using consumer insights and a retail science-based methodology. The company specializes in retail environments, merchandising displays, digital merchandising, marketing programs, audit solutions, and facility image products. This position is in the DCI Marketing Data Team. We're seeking a highly motivated student intern to work in an individual contributor (IC) role for the Data and Analytics team. This role is both hands-on and serves to meet timelines and quality requirements. The candidate will assist with building a functional Analytics Center of Excellence practice in both custom and purchased platform environments. WHAT YOU'LL DO: • Translate functional and non-functional requirements into effective designs and development specifications • Responsible for helping transform Data into - > Information -> Knowledge - > Business Decisions • Responsible for streamlining dataflow pipelines across various programs and products • Responsible for identifying trends and patterns in data leading to increased effectiveness of digital programs • Responsible for Data related documentation and visual communications • Actively seeks to learn and takes guidance from other delivery and operations team members • Support Snowflake services and warehouse WHAT YOU'LL BRING TO THE ROLE: • Currently pursuing an undergraduate degree in Computer/Software Engineering • 2+ years of experience in data-related technologies and architecture • Experience with Snowflake DB (programming knowledge using Snowflake, SnowSight and Snowpipes) is a plus • Experience in the use of machine learning methods - for example, linear regression, correlation, and statistical modeling • Experience in writing complex, highly optimized SQL queries • Experience in managing the Data pipelines • Google Analytics and Social Media Analytics experience is an advantage • Prescriptive/predictive analytics experience is an advantage *** For a rising senior (graduating in 2027), the anticipated pay rate for this role is $27.00/hour. *** Following receipt of a conditional offer of employment, candidates will be required to complete additional job-related screening processes as permitted or required by applicable law . We are an equal opportunity employer, and all applicants will be considered for employment without attention to their membership in any protected class. If you require any reasonable accommodation to complete your application or any part of the recruiting process, please email your request to careers@marmon.com, and please be sure to include the title and the location of the position for which you are applying.

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