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Sr Data Engineer

Milwaukee Tool · Menomonee Falls, WI · Full time

Posted Sep 28, 2026 · 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 time you had to translate a vague stakeholder request into a clear technical solution.

What they are checking: Partnering with non-data people to define real needs before building.

Tell me about a pipeline you had to rebuild because the first version did not scale. What changed?

What they are checking: Learning from design mistakes and improving systems as volume grows.

What would you do

An engineer says the dashboard numbers do not match what they saw on the test bench. How do you investigate?

What they are checking: Tracing lineage calmly and treating trust in the data as the real issue.

Two teams want the same metric defined two different ways. What do you do?

What they are checking: Driving agreement on shared definitions instead of building conflicting versions.

About the work

Walk me through a data pipeline you built that moved test or engineering data into an analytics-ready model.

What they are checking: End-to-end pipeline experience including ingestion, transformation and serving to users.

Test lab equipment often produces messy files in many formats. How would you design ingestion for that?

What they are checking: Handling heterogeneous, semi-structured source data reliably at the edge of the pipeline.

How do you decide between ETL and ELT for a given source system?

What they are checking: Reasoning about where transformation belongs based on scale, cost and governance.

What data quality checks would you put on a pipeline feeding product test results to engineers?

What they are checking: Building validation that catches bad data before engineers make decisions on it.

How would you model test data so it can be compared across products, test stands and dates?

What they are checking: Data modeling judgment for dimensions, grain and consistent keys.

How do you monitor pipelines so you know about a failure before your users do?

What they are checking: Operational ownership with alerting, logging and freshness checks.

What does good data governance look like for engineering data that may be sensitive?

What they are checking: Balancing access, security and documentation so data is trusted and protected.

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The full job description

As published by Milwaukee Tool.

Job Description: Come be DISRUPTIVE with us! At Milwaukee Tool we firmly believe that our People and our Culture are the secrets to our success -- so we give you unlimited access to everything you need to create innovative new solutions on our engineering team. As a Sr. Data Engineer, you will design, build, and support scalable data solutions that enable faster, more reliable decision-making across engineering, test lab, and product development operations. You will partner with cross-functional teams to transform raw data into trusted, governed, analytics-ready data products through modern data pipelines, cloud platforms, data modeling, and data quality practices. You must be permanently eligible to work in the U.S. without sponsorship for this position. Duties and Responsibilities • a Design , develop, and maintain scalable data pipelines, data models, and data integration solutions that support engineering and test operations. • Build reliable ETL/ELT processes to ingest, transform, validate, and deliver data from multiple source systems into analytics-ready environments. • Partner with engineering, lab operations, IT, analytics, and business stakeholders to understand data needs and translate them into technical solutions. • Establish and maintain data quality checks, validation rules, and monitoring processes to ensure trusted and accurate data. • Develop and optimize data warehouses, data lakes, and cloud-based data platforms for performance, reliability, and scalability. • Create reusable data assets, curated datasets, and documentation that enable self-service reporting, analytics, and operational visibility. • Collaborate with software developers and IT teams on secure data architecture, system integrations, source control, deployment, and development best practices. • Translate business strategy and operational needs into technical data solutions that improve efficiency, quality, and speed of decision-making. • Monitor pipeline performance, troubleshoot production issues, and proactively improve data reliability, observability, and maintainability. • Mentor team members on data engineering standards, coding practices, documentation, and data governance principles. • Adhere to timelines and excel in a fast-paced, high-energy environment while balancing technical excellence with practical business impact. Qualifications • Bachelor’s degree in Computer Science , Computer Engineering, Data Engineering, Information Systems, or a related technical field; equivalent experience may be considered. • 5+ years of experience in data engineering, software engineering, analytics engineering, or related technical roles. • Strong proficiency in SQL and at least one programming language such as Python, C#, Java, or Scala. • Experience designing and supporting ETL/ELT pipelines, data warehouses, data lakes, relational databases, and cloud-based data platforms. • Experience working in cloud environments such as Azure or AWS, including data storage, compute, orchestration, and security concepts. • Working knowledge of data modeling, database design, data integration patterns, APIs, and scalable system architecture. • Familiarity with modern data engineering tools and practices such as Spark, Databricks, Airflow, dbt , F abric , or automated testing. • Strong understanding of data quality, data governance, data security, documentation, and operational monitoring practices. • Ability to understand complex business processes, create process maps, and translate operational workflows into data solutions. • Strong analytical, problem-solving, and communication skills with the ability to influence technical decisions across cross-functional teams. Milwaukee Tool is an equal opportunity employer.

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