
Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.
Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.
π¬οΈ Ventilation Senior Engineer
Contract (INSIDE IR35) or Permanent
The Ventilation Senior Engineer will be directed by the Principal Engineer π¨βπΌ and will be required to support the design through the end of Preliminary Design π and then into Define π.
The Ventilation Senior Engineer is required to deliver the ventilation and building services work scope ποΈ, including the production and checking of design deliverables β , reporting directly to a Principal Engineer.
The role will involve guiding Designers π·ββοΈ in the production of:
The Ventilation Senior Engineer may also be required to produce calculations β to verify detail design and provide design substantiation π.
Responsibilities will include the production and compilation of technical documentation π such as:
The Ventilation Senior Engineer will work closely with the multidisciplinary design team π€ and plant-based teams π.
The role will support design activities across multiple work packs π¦ that impact ventilation conditions within an Alpha Plant βοΈ.
The Ventilation Senior Engineer will also be required to carry out ventilation assessments πͺοΈ to support viable options for improving containment systems π.
Competent use of 3D modelling packages π»π§© is essential to share design progress during technical and project meetings π .
π‘οΈ Experience working within a highly regulated industry, preferably within the nuclear industry β’οΈ
π¬οΈ Recent experience in Nuclear Vent Plant design and the decommissioning of redundant plant π would be advantageous, but not essential.
π A good understanding of the requirements associated with delivering ventilation designs within the nuclear sector.
π Experience in the production of technical files and supporting documentation.
π οΈ Experience of βDesign for Assemblyβ within a nuclear facility.
π Experience in the production and development of nuclear ventilation plant layouts.
β Production and checking of ventilation engineering calculations and deliverables β
π€ Liaison with key stakeholders and other design disciplines.
π Competent report writing skills with the ability to clearly and concisely communicate findings.
β±οΈ Comfortable working under time and cost constraints π·
π The successful candidate will be expected to manage their own workload and drive completion of the work scope independently.
π¬ Strong communication skills are essential, with the ability to engage effectively with both team members and Clients.
π» Proficient in Microsoft Office Packages, with a good understanding of 2D and 3D Autodesk CAD products π§©
π Experience using Pipenet would be highly beneficial.
Whilst we encourage applications from all nationalities, Assystem within the UK are subject to security and export control restrictions due to the nature of work to be undertaken.β―β―
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These restrictions mean that factors including your nationality, any previous nationalities you have held, and/or your place of birth may limit those roles that you can perform for the organisation.β―
NOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our peopleβs ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition. We see ourselves as an activist in the development of nuclear energy, convinced that it is an essential part of the fight against climate change.
8,000 switchers, spread in 13 countries in Europe, Asia, Africa and the Middle East are working every day to make the energy switch by accelerating the development of nuclear and renewable energies, power grids, clean hydrogen projects and low-carbon transport.
We design and supervise major projects through our engineering activities and accelerate our customers' digital transformation. We also develop new solutions to build faster and improve the performance of complex infrastructures.
59 years of experience have made Assystem a key partner of the world's largest industrial groups: CEA, EDF, ENEC, Enedis, Engie, Framatome, ITER, K.A. CARE, Naval Group, NICDC, Orano, RATP, Rolls Royce, Royal Commission, Sellafield, SNCF...
Assystem is ranked in the Top 3 companies in the nuclear energy sector.