HVAC Design Engineer - Nuclear

Job ID: REF20469IPosted: 2026-10-26Location: Bristol, England, GBEmployment Type: Full-timeFunction: ConsultingExperience Level: AssociateIndustry: Mechanical Or Industrial EngineeringCompany: ALTENCompany DescriptionALTEN is a global engineering and technology consultancy operating across over 35 countries worldwide.

Ready to make your application Please do read through the description at least once before clicking on Apply.

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!Job DescriptionAs a HVAC Engineer , you will join Bristol  team to support our activities within theNuclear Sectorsector. 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: BristolClearance: BPSS Experience Level: 3- 10 YOE Key Responsibilities: Support delivery of HVAC system design solutions for nuclear facilitiesProduce and check technical deliverables for nuclear ventilation and air conditioning systemsDevelop systems providing particulate abatement prior to discharge to atmosphereDesign air conditioning and cooling systems for temperature-controlled environmentsCollaborate with cross-disciplinary teams to ensure system integration and performanceProduce HVAC design deliverables through Concept and Detailed Design phasesGenerate technical reports, calculations, and drawings supporting system designAct as an HVAC subject matter expert during supplier and stakeholder engagementPresent design maturity and technical solutions at design reviewsQualificationsRequired Skills: Knowledge of systems engineering principles applied to HVAC systemsExperience developing HVAC designs from concept through detailed definitionAbility to perform trade-off studies to achieve optimal design solutionsExperience writing and checking HVAC technical documentationStrong collaboration skills across multi-disciplinary engineering teamsAbility to plan work, manage time, and escalate technical risks appropriatelyRequired Qualifications: A Bachelor’s or Master’s degree in Engineering, or equivalentmilitary experience.Desirable Skills: Experience in nuclear or other safety-critical industriesFamiliarity with verification and validation techniquesExperience working within regulated engineering environmentsAdditional InformationWhy 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 industriesPrivate Medical InsuranceCycle & Tech Scheme Employee assistance programmeLife insurance & Pension SchemeSocial atmosphere, regular gatherings & team buildingsFlexible 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. xwzovoh

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.