Senior principal mechanical Work, Jobs in Warrington, Eng (with Salaries)

Senior Principal Mechanical Engineer
Assystem —Warrington
- Hybrid work
- Travel
- In-person
- Leadership
5d
Senior / Principal Mechanical Building Services Engineer
Building services (general) jobs —Warrington
- £50,000 - £65,000 a year
- AutoCAD
- Engineering
- HVAC
- Annual leave
Senior Mechanical Engineer
VINCI —Warrington
- Bachelor's degree
- Organisational skills
- Contracts
Senior Principal HVAC Engineer
Assystem —Warrington
- CAD
- Communication skills
- Mechanical knowledge
Senior / Principal Mechanical Building Services Engineer
AtkinsRéalis —Manchester
- Full-time
- Hybrid work
- Engineering
- Microsoft Office
- Mechanical knowledge
Senior/Principal Nuclear Engineer
Risktec Solutions —Warrington
- Full-time
- Civil engineering
- Computer literacy
- Engineering
Principal Mechanical Engineer
Kier Group —Manchester
- From £70,000 a year
- Full-time
- Engineering
- Business
- Leadership
Senior Mechanical Engineer
VINCI Construction —Warrington
- Engineering
- Annual leave
- Employee assistance programme
7d
Senior Mechanical Engineer
Assystem —Warrington
- Communication skills
ACTEMIUM Design - Mechanical Design - Designer, Engineer, Senior Engineer, Principal Engineer
VINCI Energies —Chorley
- Full-time
- AutoCAD
- CAD
- Engineering
Senior Project Manager
M Group —Rochdale
- Hybrid work
- Microsoft Outlook
- Microsoft Office
- Annual leave
- Employee discount
ACTEMIUM Design - Mechanical Design - Designer, Engineer, Senior Engineer, Principal Engineer
Actemium UK —Chorley
- Full-time
- AutoCAD
- CAD
- Engineering
Quick apply
Principal Mechanical Engineer
Assystem —Warrington
- CAD
- Communication skills
- Mechanical knowledge
Principal/Senior Human Factors Engineer
AFRY —Warrington
- Hybrid work
- Travel
- Communication skills
- Flexible schedule
Principal Mechanical Design Engineer
Equans —Didsbury
- Full-time
- Engineering
- Master's degree
- Bachelor's degree
- Annual leave
- Employee assistance programme
Senior/Principal Nuclear Safety Engineer
AFRY —Warrington
- Full-time
- Hybrid work
- Engineering
- Flexible schedule
Quick apply
Mechanical Engineer
VINCI —Warrington
- Bachelor's degree
Process Engineer - Senior / Principal
Actemium UK —Chorley
- Full-time
- AutoCAD
- No degree
- Travel
Quick apply
Actemium Design - Senior / Principal Mechanical Engineer
VINCI Energies —Chorley
- Engineering
- Mentoring
- Communication skills
Principal Electrical Engineer
Kier Group —Liverpool
- From £70,000 a year
- Full-time
- Engineering
- Business
- Leadership

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Senior Principal Mechanical Engineer

Assystem -
Warrington

Apply Now

Job details

Permanent
5 days ago

Qualifications

Systems engineering
Water systems
Requirements gathering
Leadership
Communication skills

Full job description

Nuclear

Permanent /

Warrington

United Kingdom

14/06/26

On site

ABOUT ASSYSTEM

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.

JOB DESCRIPTION

Join the Fusion and Modular Nuclear Business Unit! Take on a pivotal role in shaping the future of clean energy by establishing, leading, and managing the Cooling Water Island engineering team within a groundbreaking Small Modular Reactor (SMR) development program. Drive the development of a high-performing team, overseeing the design, integration, and execution of critical cooling water systems essential to reactor operation. Play a key role in defining technical strategies, ensuring regulatory compliance, and collaborating across multidisciplinary teams to deliver innovative, high-efficiency engineering solutions that will help revolutionize nuclear power.

Your mission:

Leadership of the Engineering Activities of the Cooling Water Team – Lead and mentor a team of engineers, driving technical excellence, innovation, and collaboration to deliver critical cooling water systems for the Small Modular Reactor (SMR) program.
Development of Safety and Functional Requirements – Define and establish rigorous safety and performance criteria, ensuring compliance with industry regulations and best practices to support safe and reliable reactor operation.
Design Package Production in Line with Requirements – Oversee the creation of comprehensive design packages, ensuring alignment with project specifications, technical standards, and operational needs.
Management of Interfaces – Coordinate effectively between engineering teams, suppliers, and stakeholders to ensure seamless integration of cooling water systems with other reactor components.
Preparation of Technical Specifications – Develop clear, detailed technical specifications to guide procurement, fabrication, and installation of key cooling water system components.
Maintain Equipment Lists and Schedules – Track, update, and manage critical equipment inventories and project schedules to ensure timely delivery and smooth execution of engineering activities.
Management of Risk and Opportunity – Proactively identify potential risks and opportunities, implementing strategies to mitigate challenges and optimize system performance, cost-effectiveness, and overall project success.

Why Join the Community of Switchers?

Over 55 years in nuclear engineering.
Ranked among the top 3 largest nuclear engineering companies.
Attractive social benefits, including an engaging Employee Committee and holiday bonuses.
Ongoing training with numerous career opportunities.
70% of our managers are promoted internally!
Hybrid work: 1-2 days remote per week.

MY PROFILE

FEED to Detailed Design Experience – Proven expertise in leading projects from Front-End Engineering Design through to execution.
Multi-Disciplinary Team Leadership – Skilled in managing and coordinating diverse engineering teams.
Steam Cycle Modelling Oversight – Ability to define modelling outcomes and ensure accurate implementation.
Project Budget & Lifecycle Planning – Experienced in budgeting and planning for full design lifecycles.
Cooling Water Equipment Expertise – Strong track record in designing and optimizing cooling water systems.
Regulatory & Compliance Knowledge – Well-versed in ONR, Environment Agency, and HSE regulations.
Requirements Capture Experience – Skilled in gathering and defining technical requirements.
Systems Engineering Awareness – Strong understanding of integrated design principles.
Subcontractor Management – Experienced in overseeing and coordinating subcontractors.
Chartered Engineer (CEng) – Professional accreditation in a relevant discipline.
Security Clearance Eligibility – Capable of obtaining SC clearance for secure projects.

Attributes:

Excellent communication skills, written and oral
Strong leadership skills
Focus on delivering quality output to time and budget
Act with integrity and instils this in others
Has an appreciation of wider technical issues beyond own discipline – Understands interdisciplinary challenges and their impact on projects.
Ability to work with a high degree of independence, using their own initiative and self-motivation – Proactive and capable of managing tasks autonomously.
Confident in a multi-party, multi-national environment – Comfortable working with global teams and diverse stakeholders.
Ability to travel to Assystem offices and customer sites within the UK
To undertake work packages supporting major UK and international Nuclear Clients – Contributes to high-profile nuclear projects with global impact.

Due to the nature of work to be undertaken applicants will be required to meet certain residency criteria in order to attain a minimum level of UK security clearance if not already security cleared to a minimum SC level.

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 people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

Apply Now

Refine Your Search

senior principal mechanical jobs in warrington, eng

Senior Principal Mechanical Engineer

Senior / Principal Mechanical Building Services Engineer

Senior Mechanical Engineer

Senior Principal HVAC Engineer

Senior / Principal Mechanical Building Services Engineer

Senior/Principal Nuclear Engineer

Principal Mechanical Engineer

Senior Mechanical Engineer

Senior Mechanical Engineer

ACTEMIUM Design - Mechanical Design - Designer, Engineer, Senior Engineer, Principal Engineer

Senior Project Manager

ACTEMIUM Design - Mechanical Design - Designer, Engineer, Senior Engineer, Principal Engineer

Principal Mechanical Engineer

Principal/Senior Human Factors Engineer

Principal Mechanical Design Engineer

Senior/Principal Nuclear Safety Engineer

Mechanical Engineer

Process Engineer - Senior / Principal

Actemium Design - Senior / Principal Mechanical Engineer

Principal Electrical Engineer

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