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Our Vacancy

Senior Mechanical Engineer (Fluid Mechanics)

  • Defence
  • Permanent /
  • Sunderland
  • 07/02/24
  • Hybrid work

Assystem is an international company with one mission: accelerate the energy transition around the world.


Every day, our 6,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.


We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.


Drawing on more than 55 years’ experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimize the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering.


To ensure a viable, efficient, and reliable energy future for all.


Job Description

  • Shall demonstrate development of technical solutions that satisfies customer requirements; as part of a team.
  • Good communicator; providing feedback on technical development and project delivery to the Lead Engineer and the Project Manager.
  • Supervision of junior team members in the execution of low complexity and / or well defined work packages.
  • Ability to write technical design reports and other documentation to support the technical file.
  • Ability to manage own time and to deliver within agreed timescales, target cost and quality standards, requiring minimum supervision.
  • Actively seeks guidance and knowledge where required to augment personal and project goals.

My profile

  • Minimum 2:1 BEng qualification in Mechanical Engineering (or equivalent). Master level qualifications are preferable.
  • Working towards chartership is advantageous.
  • Demonstrable design engineering experience in a highly regulated area.
  • Familiar with Autodesk Inventor, AutoCAD and/or Catia CAD software. (Training can be provided if deemed appropriate for the role).
  • Familiar with FEA and a user-level experience ANSYS/CAESAR/Flow Master could be advantageous.
  • Proficient in applying principles of fluid dynamics to optimise the design and performance of mechanical systems (nominally water, air and high-pressure steam).
  • Experienced in pump sizing, including the selection and specification of pumps based on system requirements and fluid properties.
  • Skilled in pipework design, ensuring efficient fluid flow, proper material selection, and compliance with industry standards.
  • Capable of conducting thorough fluid flow analysis using relevant software tools to predict and evaluate system performance under various conditions.
  • Familiarity with surge analysis techniques (optional), with the ability to assess and mitigate the impact of transient events on the system.
  • A strong mathematical background and experience of MathCAD software is desirable.  
  • An appreciation for the engineering design cycle of mechanical designs from Concept through to Manufacture.
    • Experience of requirements led design / Modelled Based Systems Engineering (MBSE)
    • Production of technical files / LTQR packs
    • Experience of appropriate legislation, for example the PED / PUWER / LOLA etc.
  • Responsible for the production of mechanical and structural engineering calculations, FEA, CAD and drawings.

Security clearance:

Due to the nature of work to be undertaken applicants will be required to meet certain residency criteria in order to attain a minimum level of UK security clearance if not already security cleared to a minimum SC level.

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

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