Jacobs HVAC System Engineer in Bristol, United Kingdom

HVAC System Engineer


Jacobs is one of the world’s largest and most diverse providers of full-spectrum technical, professional and consultancy services for industrial, commercial and government organisations globally.

With more than 74,000 people globally, our teams collaborate, innovate and create. Our people are proud to have been behind some of the greatest consultancy and engineering feats over the past 70 years.

We foster a collaborative and inclusive environment for our people, and our partners, and we want you to be a part of our growing business.

With more than fifty years of Nuclear experience, Jacobs has unrivalled nuclear capability and provides full life-cycle solutions to our nuclear clients. Services include programme and project management, design and engineering, reactor support, construction, commissioning, operations, maintenance, (radioactive) waste management, decommissioning and clean-up.

We have consistently delivered value and innovation to technically challenging and complex nuclear and environmental-related projects by offering multidisciplinary capabilities, technical expertise, proven processes and a commitment to regulatory compliance, health, safety and quality workmanship.


The System Engineer will be responsible for performing the necessary engineering analysis, including the supporting calculations, for a specific system(s) in order to produce the system documentation required for the HPC project working from the Client, Bristol office. The System Engineer will act as the central point of contact for system(s) which fall(s) under their responsibility. This role is for a System Engineer specialising in HVAC (Heating, Ventilation and Air Conditioning) design.


Responsible for preparing the System Design Manual including:

o Analysis and verification of the input data

o Describing the system, its role and mission (including the safety missions)

o Updating and implementing the Safety Classified Component List, SCCL, working closely with the Safety Department (SNE) at CNEN (EDF Paris)

o Carrying out the process and operational design of the system

o Sizing components e.g. pumps, pipework, pressure relief valves

o Performing thermal modelling using ThBat software

o Producing component datasheets required for the procurement of equipment

o Ensuring the 3D model is accurate and consistent with the intended system design

o Performing the analysis for defining the Instrumentation and Control Functional Requirements of the system and production of the I&C logic

o Working closely with counterparts in the Edvancel Paris office to agree common approaches and share knowledge

Management of modifications related to the system including:

o Managing requests for modifications to system(s) issued by various external parties

o Analysis and verification of the applicability of these modifications and challenging them as appropriate

o Developing technical solutions and presenting them to the client to help resolve technical issues

o Utilising the electronic Engineering Change Management tool

Role Requirements:

Software and tools: ThBat

Language(s): English, French advantageous

Behavioural skills:

 Ability to effectively manage own workload in order to produce high quality documents and respect deadlines

 Excellent interpersonal skills

 Ability to communicate clearly and accurately, both written and orally

 Proactive and confident in communicating with others, particularly those based in remote offices including France

 Proactive in developing positive working relations with others within the project

 Continuously looking for opportunities to improve quality of engineering studies and the subsequent documentation produced

Reporting Line: Reports to the ESWA Group Leader but day-to-day- work is facilitated through the technical coordinator

Note1: This job description is not an exhaustive list of the responsibilities & activities that the job holder may be required to undertake

Note2: Travel costs for non-local candidates are not paid

Note3: Expected to attend Client site during normal working hours Monday to Friday – 40hrs per week

Note4: BPSS level security required & the successful candidate shall require to complete an application.



  • Mechanical or Chemical Engineering degree or equivalent qualification

  • Knowledge of nuclear HVAC system design, calculation and modelling

  • Working knowledge of fluid mechanics, heat transfer and thermodynamics

  • Knowledge of PWR or AGR power station design and system

  • Understanding of Safety Case construction and Nuclear Safety requirements placed on systems

  • Understanding of Nuclear Safety principles related to design of HVAC systems on a Nuclear Power Station

  • Knowledge of UK licensing requirements and its application within the HPC project


  • Knowledge of EPR design principles and Safety Classification

  • Knowledge of Instrumentation and Control design

  • Experience of performing HVAC design work on UK nuclear facilities

  • Ability to speak and write technical documents in French

  • Familiarity with Human Performance techniques

  • Experience of working on an operating plant or on an industrial site

Our Culture

At Jacobs we have recently celebrated 10 years of our culture of caring - ‘BeyondZero’. We see safety differently - we strive to go BeyondZero by putting the health, safety and well-being of our employees first in everything we do.

We are committed to equality across our business and we promote STEM and WISE (Women in Science & Engineering) initiatives. When you join Jacobs you will have access to a wide range of Global Networks, centred on inclusion and diversity. To find out more about our networks, check out our website:


We encourage applications from candidates looking for flexible working or reduced hours’ contracts.

Successful candidates will be asked to complete a Baseline Personnel Security Standard Pre-Employment check and will be required to undergo various checks including: Identity, Right to Work; Employment/Education History and Criminal Record. If you are unable to meet this and any associated criteria, then your employment may be delayed or rejected.

JACOBS is an Equal Opportunity Employer who is committed to the safety and wellbeing of all.

Primary Location United Kingdom-United Kingdom Countrywide-Bristol

Req ID: ATE000071