Data Analyst Trainee (m/f/d)

Siemens Mobility is a separately managed company of Siemens. As a leader in transport solutions for more than 160 years, we are constantly innovating our portfolio in core areas of rolling stock, rail automation and electrification, turnkey systems, intelligent traffic systems as well as related services. Through digitalization, we are enabling mobility operators worldwide to make infrastructure intelligent, increase value sustainably over the entire lifecycle, improve passenger experience and guarantee availability.

Mobility Management, Turnkey Projects & Electrification, Mainline Transport, Urban Transport and Customer Services have the know-how to make road traffic flow more efficiently and quickly, make trains more environmentally friendly and efficient, make schedules and freight shipments more reliable. We work with our customers to develop optimal solutions to help overcome their challenges.

We are looking for a Data Analyst Trainee (m/f/d) to join our team!

Your Tasks and Responsibilities

• Profile and validate existing data products: completeness, consistency, freshness and fitness for the intended use case.
• Investigate data quality issues, trace them to source systems and document root causes and fixes.
• Maintain data product documentation: definitions, business glossary terms, lineage, owners and SLAs.
• Gather user feedback and translate it into backlog items (user stories with clear acceptance criteria).
• Work with business stakeholders (e.g. Project Management, Engineering, Customer Service) to capture requirements and define KPIs.
• Explore source data, propose data models and prototype datasets or dashboards to validate value early.
• Support data engineers in building pipelines by writing specifications, test cases and sample queries.
• Prepare data used by AI/ML use cases, including feature exploration and labelling checks.
• Apply data governance, access control and information security rules to every product you touch.
• Take part in agile ceremonies (refinement, sprint review) and present findings to technical and non-technical audiences.

Your Profile

• Degree in a STEM field, preferably Computer Science or Electrical Engineering.
• Fluent in Portuguese and English (mandatory).
• You have an interest in and familiarity with AI prompting.
• You bring a strong interest in artificial intelligence, software business, strategy, and management.
• You think analytically and can structure complex information clearly and concisely.
• You are proactive, curious, and comfortable contributing your own ideas.
• You enjoy preparing presentations, summaries, analyses, and decision-support material.

What you can expect from us:

A flexible working model to promote a better work-life balance and a health insurance. 2 volunteering days a year and 4 additional bridge days per year. In addition, you’ll have access to exclusive discounts on Siemens and Bosch brands, and access to Siemens Learning Platforms that allow for internal online courses, as well as external platforms such as Coursera, Udemy, and LinkedIn Learning.

If this sounds exciting to you, then send us your application - in English - and we will get back to you!

At Siemens Mobility we believe physical barriers are not related to potential. Only the potential matters to us. We are dedicated to quality, equality and valuating diversity. Therefore, we encourage applications that reflect the diversity of the communities within which we work.

Job ID

528017

Posted since

02-Nov-2026

Organization

Mobility

Field of work

Internal Services

Company

SIEMENS MOBILITY, UNIPESSOAL LDA

Experience level

Early Professional

Job type

Full-time

Work mode

Office/Site only

Employment type

Fixed Term

Location(s)

• Alfragide - Lisboa - Portugal