About ZES

ZOLLNER Energy Systems GmbH is a specialized engineering company focused exclusively on dynamometer systems. With 80 years of expertise, we design and deliver high-performance hydraulic dynamometers for demanding testing environments across marine, power generation, and industrial applications. Our systems support power ranges up to 140 MW and are deployed globally.

ZES is seeking candidates for

Comissioning Engineer

Role Overview

  • As a Commissioning Engineer, you will be responsible for on-site installation, testing, and commissioning of hydraulic dynamometer systems worldwide. You will ensure that systems are delivered, installed, and operated according to specifications and performance requirements.

Key Responsibilities

  • Perform on-site commissioning of dynamometer systems (global travel required)
  • Execute system testing, validation, and performance verification
  • Troubleshoot mechanical, hydraulic-related issues
  • Support customer training and handover processes
  • Collaborate with engineering teams for system optimization
  • Provide after-sales technical support when required

Qualifiations

  • Bachelor’s degree in Mechanical Engineering, or a related field
  • Hands-on experience with industrial systems,commissioning, or field service
  • Understanding of hydraulic systems and rotating equipment preferred
  • Self-motivated and willingness to travel internationally
  • Strong communication and problem-solving skills

What We Offer

  • Direct involvement in large-scale system deployment  
  • Global exposure across industries (marine, power, industrial testing)  
  • Practical, hands-on engineering experience
  • High ownership and responsibility in project execution

ZES is seeking candidates for

Engineering Trainee Program

Role Overview

  • The Engineering Trainee Program is designed for early-career candidates who want to build a strong foundation in dynamometer systems, engineering design, and commissioning. Trainees will rotate across key functions including engineering, manufacturing, and commissioning.

Key Responsibilities

  • Support engineering design, documentation tasks and commissioning
  • Assist in system assembly, testing, and commissioning activities  
  • Participate in project execution and cross-functional coordination
  • Learn core principles of hydraulic dynamometer systems (design, operation)
  • Support technical analysis and problem-solving activities
  • Engage in training programs and knowledge transfer sessions

Qualifiations

  • Undergraduate student or holder of a Bachelor’s degree in Mechanical Engineering or a     related field, or currently pursuing a degree in a similar field
  • Basic knowledge of mechanics, thermo dynamics, or fluid systems
  • Self-motivated and strong interest in heavy engineering systems and industrial equipment
  • Willingness to learn and adapt in a fast-paced engineering environment
  • Fair in English

What We Offer

  • Structured training across engineering and commissioning  
  • Exposure to real industrial projects from early stage
  • Mentorship from experienced engineers
  • Long-term career path within engineering or technical project roles
  • Experience International Business