Graduate Mechanical Engineer

The Mechanical Engineering Department delivers mechanical & HVAC engineering scope for consultancy / operational delivery / design projects within multi-discipline engineering teams based in Costain’s Manchester office, primarily in the Natural Resources Division of Costain Group, in Water, Energy and Nuclear Sectors.

Typical deliverables and activities include:

• Specifications and Datasheets for Mechanical & HVAC Equipment
• Enquiry and Purchase Requisitions for Mechanical & HVAC Equipment Packages.
• Technical Bid Evaluations for Mechanical & HVAC Equipment Packages.
• Vendor design review for Mechanical & HVAC Equipment Packages.
• Factory Acceptance Testing for Mechanical & HVAC Equipment Packages.
• Process Flow Diagrams
• Ventilation Flow Diagrams
• Mechanical Flow Diagrams
• Mechanical Handling Diagrams
• Plant Layout
• Pumping system calculations and design
• Pressure Equipment calculations and design
• Mechanical Equipment calculations and design
• HVAC system calculations and design

To deliver the Engineering & Design Function within a specialist Mechanical Engineering Group, working primarily in the Natural Resources Division of Costain Group, in Water, Energy and Nuclear Sectors.

The job holder reports to the Chief Mechanical Engineer / Mechanical Engineering Discipline Lead.

It is expected that the job holder will generally be assigned to projects and therefore day to day reporting will be to project Lead Mechanical Engineer.

Costain offers a range of exciting development opportunities to accelerate your career and enable you to achieve your potential both during and after the Graduate Development Scheme.

**This role will be based at either our Manchester office or London office. Please specify your preferred location on your job application. Please note, you may be required to visit different sites, so a full UK driving licence is essential.

Costain Graduate Development Programme

By joining our 2-year Graduate programme, you’ll get the best of both worlds—great technical development and exciting opportunities to grow your personal confidence and leadership skills. You’ll be working alongside your team to deliver standout, best-in-class projects across the infrastructure sector, all while learning and building your career step by step.

The Graduate Development Programme (GDP) is also a fantastic chance to meet and network with other graduates joining us at the same time. You’ll connect with people across different projects and disciplines throughout the UK, creating a supportive community from day one. Throughout the 2 years, you’ll come together both in person and virtually to take part in engaging modules and activities such as “Growing your Career,” “Costain In Action,” and “Group Coaching.” These sessions are designed to inspire you, challenge you in the best way, and help you get the most out of your programme.

Your line manager will be fully on hand to support your learning, and you’ll have plenty of opportunities to talk through how you can put what you’re learning into your everyday work.

We also strongly recommend getting involved with our Graduate and Apprentice network (GRaAPs). It’s a brilliant way to meet other Early Careers members, discover what’s happening across different teams and projects, and explore areas of the business that genuinely interest you—helping you shape your future learning and direction.

And as a graduate, you’ll have the chance to help influence and shape future recruitment programmes and early careers opportunities—making a real difference to what comes next for future intakes.

Essential

- A Graduate Mechanical Engineer should be a degree qualified engineer aiming to develop in order to become an experienced engineer with broad experience as well as specialisms within a particular sector / discipline.
- An appropriate Degree, HNC, HND or equivalent in mechanical engineering or related discipline

Desirable
- Experience in one or more of the following mechanical engineering fields:
o Energy
o Water
o Nuclear
- MEng Mechanical Engineering, Building Services, Water and Environmental Engineering or related discipline
- Aspiration to achieve Professional Qualification as a Chartered Engineer with IMechE, CIBSE or similar Institution.

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