Mechanical Engineer - Fluid Systems (Nuclear)

Vulcain Engineering; Gloucester; On-site; GBP 40,000 - 70,000; Full time

Job summary

A leading international engineering consultancy is seeking Mechanical Engineers to join their Nuclear New Build division in Gloucester. The role requires extensive experience in fluid systems and safety cases. Candidates will manage deliverables, review documentation, and work closely with clients and stakeholders. Benefits include competitive salary, 25 days annual leave, and a matched pension scheme. This is a permanent role with growth opportunities in the nuclear sector.

Benefits

25 days annual leave + Bank Holidays

Matched pension scheme

Private medical & dental insurance

Qualifications

• Extensive experience in design, analysis, quality assurance or safety cases.
• Experience in a regulated environment such as Nuclear or Oil & Gas.
• Strong documentation and verification skills with attention to detail.

Responsibilities

• Take responsibility for mechanical fluid systems deliverables.
• Review and manage system documentation for accuracy and consistency.
• Produce technical reports and coordinate with stakeholders.

Skills

Design

Analysis

Quality assurance

Strong communication

Stakeholder management

Education

Bachelor's Degree in Mechanical, Process or Nuclear Engineering

Tools

CFD tools

P&IDs

Job description

Job Summary

We are looking to expand our technical team within our Nuclear New Build division, by hiring 2 Mechanical Engineers with a speciality in Fluid Systems. The Mechanical Engineers will take ownership of their own packages of work within fluid systems (including fluid mechanics, thermodynamics, and hydraulic systems, pumps, valves, pipework, heat exchangers). Representing the client side delivery services, this person will sit within the team who deliver overview and multi-disciplinary coordination in the areas of safety case justifications, configuration & change management, documentation management and technical reporting, whilst ensuring alignment to nuclear industry standards and QA processes within a nuclear environment.

Some of the main responsibilities of the Mechanical Engineer will include:

Responsibilities

• Take responsibility for mechanical fluid systems deliverables within the client offices on UK nuclear new build projects (fluid mechanics, thermodynamics, and hydraulic systems - pumps, valves, pipework, heat exchangers).
• Review and manage system documentation – ensuring accuracy, consistency, and proper traceability.
• Check P&IDs, as well as raise and validate design changes where required.
• Assess, determine and manage justifications for safety cases.
• Take ownership of full configuration management duties, including communicating and interfacing with multi‑disciplinary teams and stakeholders.
• Coordinate with vendors and suppliers on the technical aspects of mechanical fluid systems topics.
• Produce technical reports and provide technical input and support to any client office and site‑based activities when required.
• Build strong working relationships with client stakeholders to ensure smooth project delivery.

This is a unique opportunity for you to directly influence the mechanical fluid systems scope for landmark nuclear projects, helping to shape infrastructure that will define the UK's energy future. It's a challenging, high‑impact position with long‑term stability and clear progression routes, alongside the chance to explore various frameworks across our nuclear portfolio throughout your career at Vulcain.

Qualifications

• Extensive experience in design, analysis, quality assurance or safety cases, ideally with one or more of the following: pumps, valves, steam release systems, heat exchangers, demineralised & potable water systems.
• A minimum Bachelor Degree in Mechanical, Process or Nuclear Engineering.
• Demonstrable experience in a regulated environment such as Nuclear (desirable), Oil & Gas, Petrochemical, or similar.
• Experience producing P&IDs, technical specifications, reports and system documentation, ideally alongside strong documentation and verification skills with excellent attention to technical detail and compliance.
• Familiarity with industry codes, safety cases, standards and QA processes in regulated environments.
• Strong communication and stakeholder management skills, with the ability to interface with multi‑disciplinary teams and suppliers.
• Experience with thermal‑hydraulic modelling, transient analysis, or CFD tools is advantageous.
• Reside locally to Gloucestershire or be prepared to relocate, as this permanent role does not include travel expense coverage.
• Visa sponsorship is not guaranteed and is assessed on a case‑by‑case basis, depending on role criticality and project needs. Many of our UK projects require high‑level security clearance, meaning we can often only consider candidates with an existing, indefinite right to work in the UK.

Company Overview

Vulcain Engineering, an international engineering consultancy, supports global industrial leaders in their transition to a more responsible and sustainable future. We support our customers in the design, construction, commissioning and operation of their complex infrastructure projects that will shape the world of tomorrow. With operations in 17 countries and employing over 6,000 staff worldwide, our business responds to the needs of our clients by delivering high‑value engineering expertise tailored to our clients' most complex challenges. In the UK, we have a key focus in the Nuclear sector, contributing to groundbreaking projects, such as Hinkley Point C (HPC).

Benefits

We offer a competitive salary tailored to your experience and background. Whether you're earlier in your career or bring more senior‑level expertise, we encourage you to apply if this role aligns with your skills, or if you're open to discussing other opportunities within this discipline.

• 25 days annual leave + Bank Holidays, with the ability to swap bank holidays for cultural or religious celebrations.
• Matched pension scheme.
• Enhanced maternity, paternity, adoption and neonatal care leave.
• Employee referral scheme.
• Private medical & dental insurance.
• Electric vehicle scheme.
• Cycle to work scheme.
• Training & development, including additional qualifications and accreditations relevant to your role.
• Travel insurance – for both business and personal travel.
• Employee assistance programme.

At Vulcain Engineering, we offer more than a job – we offer a rewarding career with endless opportunities for growth and development. You'll be part of a talented team of professionals working on exciting and meaningful projects and making a real impact to the nuclear industry. Join us in shaping the future of the nuclear industry and driving innovation to new heights. If you are ready to take on new challenges and unlock your full potential, we invite you to apply for our position.