HVAC Design Engineer – Nuclear

ALTEN Group; West of England; Hybrid; GBP 45,000 - 70,000; Full time

Benefits offered by this job

Private Medical Insurance

Cycle & Tech Scheme

Employee assistance programme

Life insurance & Pension Scheme

Social gatherings & team events

Job summary

ALTEN Group in Bristol is seeking an HVAC Design Engineer to support nuclear facility ventilation and air conditioning systems. You will work across concept and detailed design phases, delivering compliant, safety-focused solutions.

The role requires 3–10 years of experience, a degree in engineering, and BPSS clearance. You will collaborate with multi-disciplinary teams to ensure performance and regulatory adherence, with a flexible, role-dependent working arrangement.

Qualifications

• Knowledge of systems engineering applied to HVAC.
• Experience from concept to detailed HVAC definitions.
• Ability to perform trade-off studies for optimal design.
• Experience writing and checking HVAC documentation.
• Strong collaboration across multi-disciplinary teams.
• Ability to plan work and manage risks.

Responsibilities

• Support delivery of HVAC system design solutions for nuclear facilities.
• Produce and check technical deliverables for ventilation and air conditioning.
• Develop systems providing particulate abatement prior to discharge.
• Design air conditioning and cooling for temperature-controlled environments.
• Collaborate with cross-disciplinary teams for system integration.
• Produce design deliverables through Concept and Detailed Design phases.
• Generate reports, calculations, and drawings supporting design.
• Act as HVAC SME during supplier and stakeholder engagement.
• Present design maturity and technical solutions at reviews.

Skills

HVAC principles

Concept to detail design

Trade-off studies

HVAC documentation

Cross-disciplinary collaboration

Planning & risk management

Education

Bachelor's or Master's in Engineering

Job description

HVAC Design Engineer - Nuclear

ALTEN is a global engineering and technology consultancy operating across over 35 countries worldwide. We partner with industry leaders across sectors including Aeronautics, Aerospace, Defence, Naval, Automotive, Energy, Rail, IT and many more to deliver innovative engineering solutions that drive technological advancement & support sustainable transformation.

Our teams of passionate and agile engineers work on cutting-edge projects that shape the future of technology and sustainability. At ALTEN, we empower talented engineers to innovate, solve complex challenges, and deliver impactful solutions that build tomorrow’s world-today.

Join us and start building tomorrow’s world today!

As a HVAC Engineer, you will join Bristol team to support our activities within the Nuclear Sector sector.

You will support the technical delivery of HVAC system design solutions that provide tempered and conditioned air to Reactor Island facilities, alongside systems that safely extract and treat contaminated air prior to atmospheric discharge. You will contribute across concept and detailed design phases, ensuring that ventilation and cooling solutions meet nuclear safety, performance, and legislative requirements.

You will work closely with system leads and multi-disciplinary engineering teams to deliver integrated HVAC and chilled water solutions for safety-critical nuclear environments.

• Location: Bristol
• Clearance: BPSS
• Experience Level: 3- 10 YOE

Key Responsibilities:

• Support delivery of HVAC system design solutions for nuclear facilities
• Produce and check technical deliverables for nuclear ventilation and air conditioning systems
• Develop systems providing particulate abatement prior to discharge to atmosphere
• Design air conditioning and cooling systems for temperature-controlled environments
• Collaborate with cross-disciplinary teams to ensure system integration and performance
• Produce HVAC design deliverables through Concept and Detailed Design phases
• Generate technical reports, calculations, and drawings supporting system design
• Act as an HVAC subject matter expert during supplier and stakeholder engagement
• Present design maturity and technical solutions at design reviews

Required Skills:

• Knowledge of systems engineering principles applied to HVAC systems
• Experience developing HVAC designs from concept through detailed definition
• Ability to perform trade-off studies to achieve optimal design solutions
• Experience writing and checking HVAC technical documentation
• Strong collaboration skills across multi-disciplinary engineering teams
• Ability to plan work, manage time, and elevate technical risks appropriately

Required Qualifications:

• A bachelor's or master's degree in engineering, orequivalentmilitary experience.

Desirable Skills:

• Experience in nuclear or other safety-critical industries
• Familiarity with verification and validation techniques
• Experience working within regulated engineering environments

Why join us?

We bring together entrepreneurial, tech-driven people to deliver innovative solutions for leading companies.

At ALTEN, you’ll work on exciting projects, supported by ongoing learning, mentoring, and clear career development tailored to your goals.

Join a passionate team and help build tomorrow, today.

In short you get:

• A personalised career path and a rewarding management style
• A huge diversity of engineering projects and industries
• Private MedicalInsurance
• Cycle& Tech Scheme
• Employee assistance programme
• Life insurance & Pension Scheme
• Social atmosphere, regular gatherings &team buildings
• Flexible way of working (role dependent)

We are proud to support the Armed Forces Covenant & actively encourage applications from members of the Armed Forces community, including veterans, reservists, service leavers, and military spouses/partners. We recognise the value of military skills and experience and are committed to ensuring that no applicant is unfairly disadvantaged during our recruitment and selection processes.

ALTEN is committed to fostering a diverse and inclusive workplace and values the strength that comes from a global mix of backgrounds and perspectives. We welcome applications from all suitably qualified candidates, regardless of background or protected characteristics under the Equality Act 2010. If you require any reasonable adjustments during the recruitment process, please let us know.

This role may require you to have or be willing to go through Security Clearance. As part of the onboarding process candidates will be asked to complete a Baseline Personnel Security Standard; details of the evidence required to apply may be found on the government website Gov.UK. If you are unable to meet this and any associated criteria, then your employment may be delayed, or rejected . Details of this will be discussed with you at interview.