TWI
NDT Principal Engineer
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NDT Principal Engineer
NIS/NDT
Location: Cambridge/Middlesbrough
Contract: Permanent
Hours: Full time
Job Profile: Principal Engineer
Salary/annum: Min £40,500.00-£65,000.00
Reference number: JR100875
Closing Date: 07 August 2026
Description of role:
TWI are seeking to appoint an experienced “Non-Destructive testing” Principal Engineer to support the “NDT Inspection Services” Section of the NDT Technology Group.
This work will include:
- In-house and customer project support
- Authoring and review of NDT and project documentation
- Support to inspection technique development and validation of inspection processes
- Development of procedures, standards and associated technical documentation
- Business development
- Mentoring and delivery of state-of-the-art advanced NDT projects
The NDT Principal Engineer will have a minimum of two CSWIP/PCN Level 2 and Level 3 in at least one major NDT method (UT/PAUT/ET would be advantageous), an appropriate qualification at degree level or significant demonstrable experience in the on-site application of NDT in industry, extensive knowledge in NDT and will have gained or be working towards chartered engineer status.
The NIS section delivers a broad range of projects to an international customer base often with competing demands and the requirement to co-ordinate multiple priorities in a fast-paced, continually changing environment. As an NDT Principal Engineer in our team, you will propose, manage and deliver projects for our customers, as well as supporting day-to-day customer enquiries. To be successful you will need to:
- Develop expertise and innovations aligned to Industrial Member need in order to differentiate TWI from competitors, often being asked to solve NDT enquiries related to inspection of challenging materials, complex geometries or within hazardous environments;
- Commit to providing technical excellence with effective communication and interpersonal skills,
- Demonstrate a strong track record for effective Project Management, scoping of work and authoring of technical reports to a high standard;
- Work with peers on your own initiative and act as a mentor to develop less experienced TWI technologists;
- Maintain projects to a high level of safety, quality and technical excellence while ensuring time, cost and delivery targets are met;
- Proactively develop a pipeline of new business, engaging with potential customers, colleagues in other business units and the business development function.
- Remain flexible to the needs of the business, supporting the team to deliver project work in times of high demand whether this is a desk-based, laboratory or on-site requirement.
- Be aware and understand your role in health and safety.
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For further details, please click on the Job Description link below:
Travel:
This position will require travel on a short-term basis within the UK and overseas according to the demand of your project work and client interactions.
About us:
TWI Ltd is a world expert in engineering, materials and joining technologies with significant property assets. We provide industry with advice and know-how in design, fabrication, failure analysis and prevention.
We offer opportunities to collaborate with inspiring and expert teams and a supportive environment in which you are actively encouraged to share your ideas and continually develop your own skills and knowledge. If you are looking to join an organisation that is fuelled by innovation, teamwork, and openness, this role could be for you.
Diversity statement:
TWI Ltd is committed to treating all employees fairly and to being an inclusive employer. Our aim is to create a work environment where our employees can reach their full potential. We put Equality, Diversity and Inclusion at the heart of our people practices to attract, develop and retain the best talent.
Inclusion:
We recognise that it’s the differences of our people that gives us our competitive edge and enables us to maintain our world-leading reputation. This is why we are committed to ensuring there is diversity across every level of our organisation; representative of the Members and societies we serve. We have made Inclusion our number one corporate value to demonstrate our commitment to ensure it is at the core of everything we do at TWI.
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Why work for TWI?
We offer a competitive salary, share-in-success bonus scheme, generous pension scheme (both employee contribution (flexible amount) and TWI contribution (up to 10% of salary), holiday (25 days + 8 bank holidays), private health and dental cover, career development and training, onsite employee restaurant, onsite gym, day nursery available for companies on Granta Park (Cambridge) site (subject to availability), onsite parking and more.
We know that balancing work and personal life can at times be challenging. This is why we continue to review and implement family-friendly policies including hybrid working, flexible working, enhanced maternity pay and paid parental leave.
TWI Culture
As one of the world’s leading independent research and technology organisations, we are committed to attracting, motivating and retaining the best talent from around the world. Our goal is to develop the next generation of experts to address future industry challenges.
We are committed to creating a culture that recognises and respects the differences between people while valuing the contribution everyone makes to TWI.
The diversity of our staff and students makes a positive and important contribution to our continuing success.
TWI offers a comprehensive training programme, incorporating both in-house and external courses to support staff development.
TWI Values:
Our six values provide a point of reference for the way we expect our people to operate and behave.
- Inclusion: Valuing the contribution from every individual, creating value for our customers
- Teamwork: Building effective working relationships, we accomplish more together
- Adaptability: Engaging positively with change to meet the needs of the business
- Taking Responsibility: Achieving our objectives and personal development
- Innovation & Expertise: Championing new ideas and sharing knowledge to solve industry problems
- Customer Focus: Building trusting relationships with our customers
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