Senior Engineer – Mechanical – HVAC (Chilled Water)

Job Description

Job Title: Senior Engineer – Mechanical – HVAC (Chilled Water)

Location: Glasgow, Bristol, Portsmouth. We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role

Salary: Up to £49,100 (Depending on skills and experience)

What you’ll be doing:

• Preparing specifications and developing chilled water system designs in accordance with project requirements, technical standards, and quality expectations. This includes Fluid calculations, pump and pipework sizing and system schematics
• Carry out design appraisals in assigned areas to ensure compliance with all applicable standards and design criteria.
• Participating in the development, maintenance, and modification of engineering processes and procedures relating to chilled water distribution systems, ensuring they remain aligned with technical developments, regulatory requirements, and operational needs
• Carrying out specialist technical analyses and investigations, such as fluid modelling, flow optimisation, equipment performance assessments, and root‑cause analysis for system faults. Prepare detailed technical reports with recommendations to support problem resolution, system improvement, and enhancement of chilled water capability
• Supporting the Principal Engineer as a specialist point of contact with customers and/or suppliers on chilled water engineering matters. This includes resolving technical issues, coordinating design intent, reviewing supplier data, and maintaining clear communication of priorities, performance requirements, and objectives
• Providing guidance, mentoring, and technical direction to less‑experienced team members, ensuring effective task delivery while supporting their professional growth and development within engineering

Your skills and experiences:

Essential:

• Experience in Auxiliary system design (fluid systems)
• Experience creating and reviewing system schematics
• Experience creating and reviewing system calculations

Desirable

• Previous experience in Chilled Water systems
• Experience in engineering or a defence related industry
• Has sufficient experience of the total product lifecycle to enable a good understanding of adjacent phases and through life engineering issues
• Microsoft Office Suite / Autocad / Foran

Engineers at all levels should possess an academic qualification in Engineering or other related STEM subjects as well as specific (either academic or professional) qualifications and become recognised as Incorporated or Chartered Engineers through an appropriate recognised professional institution.

Engineers are encouraged, and will be supported, to achieve the relevant accreditation.

Preference will be given to candidates who are already professionally registered.

:Benefits

As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive.

Why BAE Systems?

This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments.

Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks.

Closing Date 17th March 2026. Interviews for this position will take place W/C 23rd March 2026.

We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.

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