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Principal Mechanical Engineer

McDermott · The Hague

The Hague · On-siteFull-TimePosted Jun 24, 2026

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Job description

Job Overview:

The Principal HVAC Mechanical Engineer is responsible for interpreting internal or external business issues and recommending best practices. They will be tasked with solving complex HVAC Engineering-related problems and will work independently with minimal guidance. The Principal HVAC Mechanical Engineer may be responsible for leading functional teams or projects and is regarded as a specialist in HVAC Engineering. As such, they must have in-depth expertise as well as broad knowledge of the HVAC discipline within the Engineering function. Offshore experience is required.

Our ingenuity fuels daily life. Together, we’ve forged some of the most trusted partnerships across the energy value chain to make what was once just an idea a reality: laying subsea infrastructure thousands of feet below sea level, installing platforms hundreds of miles from shore, using our expertise to design and build offshore wind infrastructure, and reshaping the onshore landscape to deliver the energy products the world needs safely and sustainably.

For more than 100 years, we've been making the impossible possible. Today, we're driving the energy transition with more than 30,000 of the brightest minds across 54 countries.

Key Tasks and Responsibilities:

  • Perform conceptual, FEED, and detailed analyses and Design as per Design basis, project specifications, design codes, and standards
  • Apply in-depth skills and broad knowledge of the business to address complex problems and nonstandard situations
  • Prepare clear and accurate detailed design calculations and analyses, including design reports and procedures
  • Manage own time to meet objectives and (as Lead Engineer) forecast and plan resource requirements
  • Clearly communicate and explain difficult concepts and persuade others to adopt a point of view
  • When acting as Lead Engineer, in addition:
    • Direct small or medium Mechanical Engineering team as a Lead Engineer
    • Lead the Discipline engineering design of the assigned work area and completed within the planned schedule and budget, in accordance with standards, MDR, and project-specific procedures and to a high professional standard
    • Plan, organize, and direct all aspects of Discipline execution on the assigned project, including scope, deliverables, schedule, and all workforce resources - agree on allocations with the Discipline Manager
    • Ensure interfaces and deliverables are clearly identified
    • Maintain responsibility for progress and productivity, identifying any required corrective action
    • Act as project representative for the discipline during meetings with the Project Team, Customer discipline lead, and relevant agencies such as certifying authorities, auditors, third parties, etc.
  • Become fully familiar with the project scope of work, specifications, schedule, and all inter-discipline requirements, including identifying concerns as early as practicable and taking appropriate initiatives to address the issues
  • Interpret contractual requirements as they relate to engineering execution
  • Identify changes to scope and promptly raise change notifications, including providing any necessary supporting documentation and estimates
  • Provide similar support for Variation Orders
  • Interface with all disciplines to develop clash-free designs
  • Interface with other departments to obtain input for Discipline designs and drawings
  • Maintain close coordination with other engineering disciplines, Planning, and Project Management Team, as required
  • Document substantive communications (communications that result in significant decisions or assignment of actions) and forward copies to the Discipline Lead Engineer and Discipline Manager
  • Prepare estimates for bid proposals, including technical query reviews, execution statements, and manhour estimates, identifying software requirements and any other project-specific requirements
  • Raise technical queries to obtain missing information, clarify work scop

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