Mechanical Engineer - Offshore Substations
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.
Contact
Last updated on 2025-12-27 | Report an issue
Job Description
We are looking for a highly skilled and motivated Mechanical Engineer to strengthen our Mechanical team. In this role, you will be a key contributor to the design and development of mechanical systems for offshore substations in the renewable energy sector. Your expertise will ensure safe, efficient, and reliable operations in challenging offshore environments.
You will become part of our Renewables Division, which boasts one of the largest offshore substation project portfolios worldwide. Working alongside experienced professionals, you will contribute to innovative solutions that drive the global energy transition.
Key Responsibilities
As our new Mechanical Engineer, you will primarily work on EPCI (Engineering, Procurement, Construction, and Installation) contracts for offshore substation projects. Your responsibilities will include:
- Design & Engineering: Develop innovative mechanical designs and solutions in collaboration with interdisciplinary teams.
- System Integration: Ensure seamless integration of mechanical systems with electrical, structural, and control systems.
- Compliance & Standards: Guarantee adherence to industry standards, codes, and safety regulations throughout all phases.
- Documentation & Reporting: Prepare technical documentation, drawings, and reports to communicate design concepts and maintain accurate project records.
- Budget & Quality Control: Manage cost, hours, and quality for mechanical systems within assigned projects.
- Stakeholder Coordination: Align technical solutions with internal and external stakeholders, including clients and suppliers.
- Continuous Improvement: Drive process optimization, participate in lessons learned, and contribute to engineering standards development.
Your tasks will include but are not limited to:
- Produce and manage design solutions and procurement documentation.
- Coordinate troubleshooting with clients, suppliers, and project disciplines.
- Facilitate client workshops and meetings to align scope and technical solutions.
- Clarify client requirements during tender and project phases.
- Oversee and sign off on FAT (Factory Acceptance Tests) and SAT (Site Acceptance Tests).
- Participate in concept development and optimization of technical solutions.
Your profile
Although titled Mechanical Engineer, this role involves working with multi-disciplinary systems such as diesel generator and fuel systems, requiring knowledge across mechanical, electrical, and control disciplines. Success in this role depends on strong collaboration and teamwork.
We expect that you:
- Hold a Bachelor's or Master's degree in Mechanical Engineering, Marine Engineering, or similar.
- Have experience in EPC project execution.
- Preferably have experience with diesel generator systems and offshore projects.
- Are familiar with industry standards such as DNV, IEC, and ISO.
- Possess strong communication and teamwork skills.
- Demonstrate attention to detail with a focus on quality and safety.
Why Join Semco Maritime?
We offer an exciting and challenging position in an international organization committed to delivering innovative and sustainable solutions globally. You will work in an environment defined by dedication, passion, and ambition, with opportunities to make a real impact on the renewable energy revolution.
Location: Kielecka 2, 81-303 Gdynia, Poland
We conduct interviews on an ongoing basis, so please submit your application as soon as possible via the link on the page.
For questions, contact Rafid Kajo, Manager of Mechanical Team, at +45 7916 6867 or +45 3016 6613.
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About the role
December 23, 2025
Full Time
Company
January 13, 2026
On-site
- Gdynia, Poland
Mid-level to Senior
UTC+01:00
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