Semco Maritime

High Voltage Service Technician/Engineer

Join Semco Maritime as a High Voltage Service Technician/Engineer in Emden, Hamburg, or Esbjerg. This role involves offshore maintenance of substations and wind turbines, project coordination, and client communication. Benefit from a flexible work environment, professional growth, and a passionate team focused on renewable energy.
Semco Maritime
Semco Maritime
Flexible Full time UTC+01:00

Semco Maritime

Company Overview

Semco Maritime A/S

Esbjerg, Denmark

1888

Approximately 1,300 employees and a revenue of $296.6 million in 2023 (source: zoominfo.com).

What They Do

Semco Maritime focuses on engineering, construction, and services in both conventional energy, including oil and gas, as well as renewable energy, particularly offshore wind. The company offers specialized solutions such as wind farms, fire suppression systems, telecommunications/IT, and mobilization services. Additionally, they provide engineering studies, projects, installation/commissioning, as well as maintenance and decommissioning of offshore assets, making them a versatile player in the energy sector (source: europeanjobdays.eu). Semco Maritime serves global energy markets and has a geographical presence in Denmark, the UK, Norway, Vietnam, Singapore, Montenegro, West Africa, and the North Sea (source: cbinsights.com). Their products and components support offshore assets, including electrical installations and valve maintenance, and they utilize a portable concept called "shipyard in a box" for flexible setups at customer locations (source: zoominfo.com).

Projects & References

Semco Maritime has completed a number of notable projects, including upgrades of drilling rigs and offshore work in Denmark, Norway, the UK, Singapore, Montenegro, and West Africa over the past 30 years. Among the ongoing major projects is the Mayflower Wind project in the USA, which commenced in January 2020 and is the company's largest order to date (source: semcomaritime.com). The company has also secured important contracts with clients such as TotalEnergies, including a 5-year contract for labor and construction services on Danish North Sea installations (source: zoominfo.com).

Recent Developments

In the past two years, Semco Maritime has secured a 5-year contract with TotalEnergies for Danish North Sea installations, which took effect in November 2022 (source: zoominfo.com). On April 12, 2023, they entered into a strategic partnership with BlueNord ASA, supporting a license application for the Elly-Luke gas field in the Danish North Sea (source: zoominfo.com). Furthermore, David C. Hutchinson was appointed as CEO and UK Country Head for Semco Maritime Ltd. on October 13, 2022, based in Aberdeen to drive growth in the UK (source: zoominfo.com).

Working There

Semco Maritime offers a wide range of roles in project management, engineering, design, construction, service, and maintenance. They have recently advertised positions in the UK, including Service Coordinator and Senior Planning Engineer, indicating active recruitment in Grimsby as well as likely in Esbjerg and Aberdeen (source: europeanjobdays.eu). The company culture emphasizes a cohesive team of highly skilled individuals working in a non-hierarchical environment, providing employees with freedom and responsibility (source: europeanjobdays.eu). Specific benefits are not documented in the available sources.


Last updated on Feb 23, 2026 | Report an issue

Job Description

Do you have a passion for renewable energy and a sharp eye for technical details? Are you excited about using your technical skillset and knowhow hands-on offshore but also from time to time managing projects from start to finish? If so, we want to hear from you!

As our new Service Technician/Engineer in the Renewable division, you will be a valuable member of the Medium and High Voltage Service team, whose mission is to execute Medium and High Voltage Service projects across disciplines for offshore assets e.g. OSS, Rig and WTG. You will have the chance to both join exciting Service campaigns but also potentially drive all aspects of the project process - from initial client inquiries to final execution. Moreover, this role provides an exciting opportunity for you to make a lasting impact on the projects you work on and to advance your professional development.

"You will be part of a team of fantastic and competent colleagues that prioritizes teamwork and a 'winning as a team' mentality. Our team values a flexible work atmosphere with an emphasis on balancing work and personal life, as well as opportunities for professional growth. In this role, you will have great opportunities to bring your own ideas to the table and play a key role in shaping our projects and services." - Christian Poulsen, Head of MV & HV Service

Your tasks & responsibilities

As a Service Technician or Service Engineer you will have a variety of hands-on service and maintenance tasks on OSS & Rig and Wind Turbines combined with Technical clarification, documentation and planning the execution.

Your tasks will include but are not limited to:

  • Maintenance of Offshore Substations (OSS) and wind turbines (WTG)
  • Service tasks on switchgears and transformers
  • Test of protection devices such as relay, circuit brakers etc.
  • Maintenance Rig (Electrical SPS)
  • Hands-on Offshore for Special Technical Testing and Trouble shooting.
  • Coordinate and plan work packages for execution, both on- and offshore.
  • Maintaining communication with clients and addressing their inquiries and concerns during initiation and execution of projects.

Your profile & qualifications

You could come with an Engineering degree and would like to combine it with hands-on offshore work or maybe you have a background as and HV Technician/Authorized Person and desire to develop and build on top with preparation of RAMS and Technical Planning. You are driven by completing tasks to the best of your ability and remain in control even in fast-paced situations. You have a safety focused mindset and never compromise when it comes to safety on the job. Additionally, you are service-minded and greatly enjoy collaborating with your colleagues.

To succeed in this position, we imagine that you have:

  • An educational background as an Electrician and have been working as High Voltage Technician for minimum 3 year or come with an Engineering background with the desire to work offshore
  • High Voltage and GWO training certificates (you should be able to upload your certificates unlimited) or in depth knowledge on electrical systems and willing to train for obtaining them (if you are applying with an Engineering background)
  • Fluently in English
  • Work permits to working in the EU
  • Documented switching experience on High voltage equipment is advantageous

We offer you an interesting and challenging job in an international organisation, where we strive to provide innovative and sustainable solutions globally. You will get the unique opportunity to work in an environment characterized by dedication, passion and ambition.

Your place of Employment will be at our Global HQ located in Esbjerg, Denmark or Emden, Germany or Hamburg, Germany. The position is full-time, more than 100 travel days per year should be expected.

We conduct our interviews on an ongoing basis, so if you are interested, you must submit your application as soon as possible via the link on the page.

Please accept some delayed response time during the Summer.

If you have any questions about the position, you are welcome to contact Christian Poulsen, Senior Manager MV & HV Service at +45 2294 4199.

We look forward to hearing from you!

Apply now

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About the role

June 25, 2026

June 25, 2026

Full time

Flexible

Company

Wind Energy

Semco Maritime

semcomaritime.com

  •  Emden, Germany
  •  Esbjerg, Denmark
  •  Hamburg, Germany

Minimum 3 years as High Voltage Technician or relevant Engineering background

UTC+01:00