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Assystem

Senior Mechanical Design Engineer (Fluid Systems)

Warrington
Posted about 21 hours ago
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Job Description

The Role

Reporting to the Turbine Island Lead, the Senior Mechanical Design Engineer will be responsible for developing fluid systems. The Senior Mechanical Design Engineer shall work closely with multi-disciplined teams and the supply chain to help deliver the system design.

Key Responsibilities

  • Develop 2D CAD drawings, including process flow diagrams (PFD) and process and instrumentation diagrams (P&ID).
  • Prepare 3D CAD/BIM models, plant layouts, piping design, isometrics, MTO, general arrangement drawings, detail drawings, and sketches.
  • Perform layout optimization engineering across design phases.
  • Participate in 3D model reviews, layout reviews, design reviews, and technical meetings.
  • Ensure compliance with required design safety factors, tolerances, specifications, standards, codes, legislation, and requirements.
  • Collaborate with multi-disciplinary engineering teams to ensure a coordinated design.
  • Maintain records of design process in accordance with sound design practices.
  • Maintain and update databases for CAD/BIM design documentation.
  • Report status and updates to management line.
  • Support the team and maintain required standards and expectations.
  • Meet targets, quality, time, and budget constraints.
  • Support and mediate solutions and issues with resolution with all stakeholders being aligned.
  • Ensure adherence to the company statutory H&S Policies and rules and compliance with the project and Quality.

Reasons to use Rodeo

I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.

Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

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Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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Why you're a good match

You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.

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Strong

Experience fit

Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.

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Strong

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Why Join the Community of Switchers?

  • 🌟 Over 55 years in nuclear engineering.
  • 🏆 Ranked among the top 3 largest nuclear engineering companies.
  • 💼 Attractive social benefits, including an engaging Employee Committee and holiday bonuses.
  • 📚 Ongoing training with numerous career opportunities.
  • 📈 70% of our managers are promoted internally!
  • 🏠 Hybrid work: 1-2 days remote per week.

Qualifications

Essential Skills, Qualifications and Experience:

  • Previous experience as a Mechanical Design Engineer or a similar role.
  • Ability to work within the engineering team to realize designs.
  • Familiarity with 2D CAD systems (AutoCAD) for drawing creation.
  • Familiarity with 3D CAD/BIM systems (Revit, Inventor, Solidworks, Solid Edge, Siemens NX, PDMS, AutoCAD Plant 3D or similar) for model and drawing creation.
  • Professional qualification in an engineering-related field.
  • SC Clearance or capable of achieving it.

Personal Specification/Attributes:

  • Good communication skills, written and oral.
  • Focus on delivering quality output to time and budget.
  • Act with integrity and instills this in others.
  • Ability to work with a good degree of independence, using their own initiative and self-motivation.
  • Flexible, agile to the role needs, to maintain delivery targets.
  • Confident in being suggestive of alternative solutions that provide safety, time, cost, and quality solutions.
  • Team player.
  • Ability to manage own time and to deliver within agreed timescales.

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Additional Information

Security clearance:

Due to the nature of work to be undertaken, applicants will be required to meet certain residency criteria 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.

NOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment, or ask for sensitive personal information during the recruitment process.

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Location

Warrington, England, United Kingdom

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