A

ASSYSTEM

Engineering services for design, construction, commissioning

Principal Mechanical Engineer

Design EngineeringConfirmed live in the last 24 hours
Full-timeNewcastle upon Tyne, UKNo salary listed

About the Job

Requirements

  • A minimum 2:1 Bachelor of Engineering degree in Mechanical Engineering or equivalent is required.
  • A Master's degree is desirable.
  • Chartered Engineer status or working towards Chartership is advantageous.
  • Demonstrable engineering experience within a highly regulated industry is required.
  • Experience using 3D computer-aided design software such as Autodesk Revit, Inventor, AutoCAD, or CATIA is required; training may be provided where appropriate.
  • A strong understanding of mechanical and structural engineering principles, including pipework and vessel design, is required.
  • A thorough understanding of the mechanical engineering design lifecycle, from concept through to manufacture, is required.
  • Experience with Requirements-Led Design and/or Model-Based Systems Engineering is required.
  • Experience producing technical files and Lifetime Quality Records packs is required.
  • Good knowledge of relevant engineering legislation, including Pressure Equipment Directive, Provision and Use of Work Equipment Regulations, and Lifting Operations and Lifting Equipment Regulations, is required.
  • Experience producing, checking, and leading the development of mechanical and structural engineering documentation is required.
  • Experience working alongside Nuclear Safety Engineers to develop safety requirements and engineering safeguards is required.

Responsibilities

  • Provide technical leadership and oversee delivery of engineering solutions that meet customer requirements.
  • Work with project managers, lead engineers, clients, and multidisciplinary teams to deliver projects safely, on time, within budget, and to quality standards.
  • Lead engineering teams in developing technical solutions.
  • Communicate technical progress and project delivery updates to Lead Engineers and Project Managers.
  • Lead, motivate, mentor, and supervise engineers, including supporting junior team members' development.
  • Delegate work and promote collaboration.
  • Identify, review, and manage project risks and opportunities.
  • Oversee engineering work packages and ensure technical quality.
  • Produce and review technical design reports, calculations, and engineering documentation for technical files.
  • Manage personal workload and support the wider team in delivering projects on time, within budget, and to agreed quality standards.
  • Develop technical knowledge and seek guidance where appropriate to support personal and project objectives.
  • Liaise with clients and subject matter experts across engineering, nuclear safety, operations, and safety disciplines.

Desired Qualifications

  • Experience with finite element analysis and software such as ANSYS, CAESAR II, or FlowMaster is advantageous.
  • Experience using MathCAD is desirable.
  • Understanding of Functional Safety within process and mechanical engineering, including BS EN 61508 and BS EN 61511, is desirable.
  • Working knowledge of NEC3 or NEC4 contracts and ability to identify and communicate project risks is desirable.
  • Strong knowledge of pipework design and associated equipment, including valves, pumps, supports, and ancillary systems, is desirable.
  • Experience engaging with supply chain partners to develop and specify equipment for system delivery is desirable.
  • Ability to support multiple concurrent projects in a fast-paced environment is desirable.

About the Company

ASSYSTEM

Engineering services for design, construction, commissioning

Assystem provides engineering services for complex projects, covering design, construction, supervision, commissioning, and operation, with a strong focus on the nuclear and energy sectors. Its approach combines multidisciplinary engineering teams and project-management capabilities to move projects from initial concept through to operation. The company differentiates itself through a long track record, strategic acquisitions (including Alphatem in 1995 and Mactech Energy Group in 2025) and an early public offering in 2013, which have expanded its capabilities and market reach in the energy and nuclear fields. Its goal is to be a leading, reliable partner for clients by delivering end-to-end engineering services and helping them meet safety, performance, and regulatory requirements across the project lifecycle.

Company size
5,001-10,000
Company stage
IPO
Headquarters
Paris, France
Founded
1966

Recently Posted Jobs

Explore more opportunities at ASSYSTEM

See more jobs