Senior Mechanical Engineer

LEAD THE MECHANICAL DESIGN & DEVELOPMENT OF A NOVEL NUCLEAR REACTOR 

At Seaborg Technologies we are developing a nuclear power plant concept fundamentally different from what exists today. By bringing to market an advanced molten salt reactor we are making nuclear an inexpensive, sustainable, and scalable technology that can make fossil fuels a thing of the past and revolutionise energy markets. The opportunity to make an impact on climate change and provide millions of people with cheap and accessible energy is what inspires all of us every day.   

Creating an innovation that can impact the world isn’t easy and requires a diverse team bringing together a range of talents and perspectives. We know that we cannot do this alone, so we work closely with regulators, shipyards, academic institutions, and the nuclear industry from all over the world to develop technologies and materials so we can produce an advanced floating nuclear power plant.   

This is your chance to become part of a collaborative research environment where you can chart an uncommonly diverse career and help change the world. Seaborg’s work environment allows for great influence, the possibility to take on responsibility, and personal growth but also demands flexibility.  
 

THE ROLE 

We are looking for a Senior Mechanical Engineer with a background in system design and development, preferably within the nuclear or power generation industries. 

In this role, you will be at the forefront of mechanical design and integration of both reactor and power barge structures, systems and components, ensuring technical alignment and supporting manufacturing assessment.  
 

KEY RESPONSIBILITIES & TASKS 

• Lead mechanical design within a multi-disciplinary engineering project for various structures, systems and components (SSC’s) for example pressure vessels and piping. 

• Provide technical direction for the mechanical discipline, providing guidance, technical oversight, and decision-making support in collaboration with the Engineering Manager. 

• Support the definition of mechanical architecture, system and sub-system requirements along with their verification and validation. 

• Facilitate integration between reactor and barge systems to ensure geometric & manufacturing feasibility. 

• Support the continuous improvement of the Mechanical Engineering function, including processes and tools. 

• Perform mechanical design activities across the plant including design by rule and ideally design by analysis (finite element analysis). 

• Guidance & supervision of CAD users for producing detailed technical drawings. 

 

PROFESSIONAL COMPETENCIES 

• A degree in Mechanical Engineering or a related field. 

• Minimum 10 years’ experience designing mechanical systems and components, ideally in the nuclear or power generation field. 

• Knowledge of codes and standards such as ASME.III.Div1 and ASME.VIII.Div1 & Div2. 

• Understanding of manufacturing tolerances, materials properties, welding techniques, in addition to manufacturing & quality assurance requirements. 

• Background or experience with manufacturing of different components is highly beneficial. 

 

PERSONAL COMPETENCES 

• You can work cross-functionally in a diverse technical team. 

• You have a strong ability to communicate transparently and clearly with team members and internal & external stakeholders. 

• You actively share expertise and insights with junior colleagues / engineers, supporting their growth and development through guidance and encouragement.  

• You demonstrate integrity, responsibility and professionalism in your actions. 

• You maintain a clear big-picture perspective, identifies key priorities based on overarching goals and ensures focus on the most impactful tasks.  

 

WHAT WE OFFER 

• The chance to work on ground-breaking technology that will impact the global energy landscape.  

• Working closely with globally acknowledged experts in the field.  

• An international and diverse team. 

• Personal and professional development opportunities and support.  

• Informal and flexible work environment. 

• 6 weeks paid vacation per year. 

• In addition to Danish universal healthcare – private health insurance for certain medical expenses and procedures.  

• Employee warrant program. 

 

WHERE 

We are based in Copenhagen, Denmark, a country known for its high quality of life and extensive social welfare system. Danes are among the happiest people in the world and Copenhagen is ranked one of the 10 safest cities in the world. Read more about all the benefits of living in Denmark here.   

 

WANT TO JOIN THE TEAM? 

Please submit a motivational letter and CV in English by 7 April 2025. As we strive to have a neutral hiring process, please do not add a picture to your CV. We look forward to reading your application.