We are looking for a driven and hands-on Materials Technician to join our Marine & Tunnelling team at the Civil Works Alliance, supporting delivery of the Sizewell C project — one of the UK’s most significant low-carbon infrastructure programmes.

As part of the CWA, we are helping to build Sizewell C, a 3.2GW nuclear power station that will generate low-carbon electricity for around 6 million homes. The project will supply clean, reliable energy for at least 60 years and is pivotal to the UK’s energy future.

This is a fantastic opportunity to work in a site-based role that supports cutting-edge civil engineering and nuclear construction. You’ll play a vital part in our materials testing and compliance programme — ensuring that all materials used in our marine and tunnelling works meet the highest quality and safety standards.

In this role you will:

• Carry out concrete, grout, aggregates, and earthworks testing — both on site and in laboratory environments

• Support development and testing of concrete mixes for tunnel linings and other specialist construction elements

• Prepare and deliver trial mixes, monitor material behaviour, and ensure full compliance with technical specifications

• Work in accordance with UKAS-accredited lab protocols and SZC quality standards

• Help train junior staff and support continuous improvement in our testing and reporting procedures

• Maintain accurate data records and report findings to technical and project teams

We’ll look to you to bring attention to detail, a proactive mindset, and a commitment to Zero Harm in everything you do. You’ll be a key part of our laboratory and on-site engineering teams, providing high-quality data and insight to ensure the success of this nationally critical project.

What we’re looking for:

• Previous experience working with construction materials in a UKAS-accredited laboratory

• NVQ Level 2/3 in a relevant subject (or equivalent)

• Strong data collection, analysis, and communication skills

• A full UK driving licence— this role involves travel between sites including Suffolk and Avonmouth

• A positive attitude and a desire to keep learning and developing

Desirable:

• SSSTS qualification

• Experience training others or reporting KPIs

• Familiarity with risk assessments and method statements

If you’re looking for a role that combines field and lab work with national impact, and you're motivated by working on a project that’s shaping the future of UK energy, we'd love to hear from you.