Intern (m/f/d) Lean Management / Operational Excellence

To support our team, we are looking for an Intern (m/f/d) Lean Management / Operational Excellence.
Location: BerlinStart: from October 2026Duration: at least three monthsWorking hours: 40 hours/weekYour MissionDuring your internship, you will combine the practical application of Lean Management in our Berlin laboratories with supporting our central Operational Excellence network.

You will analyze real processes, develop concrete improvements together with the on-site teams, and accompany their implementation. At the same time, you will support group-wide Lean activities – for example, in training, workshops, communication measures, and campaigns.

You will have the opportunity to work on your own detailed study or Lean initiative from analysis through implementation to the presentation of results.

• Recording and analysis of operational processes in the Berlin laboratories, for example using value stream analyses, spaghetti diagrams, or multiminute studies
• Independent processing of a detailed study or Lean initiative – from problem definition to the development and implementation of suitable measures and the presentation of results
• Collection and analysis of relevant key figures as well as evaluation of the effectiveness of implemented improvement measures
• Development of practical solutions together with the on-site teams, for example in the areas of 5S, FIFO, visual management, or process standardization
• Support in the preparation, organization, and documentation of Lean workshops, training sessions, and other events
• Creation of presentations, posters, templates, and other communication materials for the group-wide Operational Excellence network
• Taking over administrative and organizational tasks as well as supporting the preparation of group-wide Lean activities and campaigns
• Presentation of conducted analyses, developed measures, and achieved results to the involved teams and relevant decision-makers
• If necessary, support for projects at other locations within the DACH region

• Ongoing studies in Industrial Engineering, Economics, Business Informatics, Supply Chain Management, or a comparable field of study
• Interest in an internship of at least three months, either mandatory or voluntary
• Strong interest in Lean Management, Operational Excellence, continuous improvement, and the analysis of operational processes
• Analytical, structured, and independent way of working as well as enjoyment of developing and jointly implementing improvement measures
• Strong communication skills and enjoyment of collaborating with different target groups in a cross-location environment
• Very good German and English language skills, both written and spoken
• Willingness for regular work on-site in the Berlin laboratories as well as occasional travel within the DACH region
• Initial practical experience in Lean Management, CI, process optimization, or key figure analysis is advantageous, but not a prerequisite

• Own Project with Visible Impact: You will work on a concrete Lean initiative and can directly apply your ideas in practice.
• Structured Professional Onboarding: Our Operational Excellence team will impart the necessary Lean fundamentals, methods, and tools to you and will support you with technical questions.
• Personal On-Site Support: At your respective work location, a dedicated contact person will be available for operational guidance and daily management.
• Insights into Laboratory Processes: You will get to know a demanding and regulated work environment and gain practical insight into various operational processes.
• Group-Wide Collaboration: You will work with both the Berlin teams and our DACH-wide Operational Excellence network.
• Further Development: You will participate in internal Lean training sessions and group-wide activities, and systematically expand your methodological, analytical, and communication skills.
• Modern Working Methods: For your work, you will receive the necessary technical equipment and will work across locations using tools like Microsoft Teams.

• Responsibility from the start: Involvement in a concrete Lean initiative and independent assumption of clearly defined tasks
• Insight into all dimensions of Lean Management: From analysis to implementation
• Mentoring & Development by experienced colleagues on-site
• Network & Exchange within a nationwide Operational Excellence team
• Certificates for participation in internal trainings
• Prospect of later permanent employment or thesis work in one of the numerous Tentamus laboratories

Tentamus Group GmbHHuman ResourcesPhone: +49 15144063058    An der Industriebahn 26
13088 Berlin

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