Senior Geotechnical Engineer

Our Environmental Compliance and Ground Engineering team within Tetra Tech Consulting is looking for a Senior Geotechnical Engineer to join us in either Abingdon or London. This is an exciting opportunity for someone ready to take the next step in their career and progress to Senior grade within a collaborative, multi‑disciplinary consultancy environment.

You will deliver geotechnical design and interpretative reporting across a varied portfolio of projects throughout the UK. No two projects are the same, with work ranging in scale and complexity, offering the opportunity to broaden your technical experience and make a real contribution to project success.

Working closely with colleagues and clients, you will provide interpretative advice, design support and technical guidance across all stages of delivery. This includes supporting due diligence, planning applications, preparation of site investigation specifications, management of site investigations and scheduling of laboratory testing, interpretive reporting, geotechnical design, preparation of geotechnical construction works specifications, and construction‑stage monitoring and validation.

The primary role relates to the design and specification of geotechnical works, including earthworks, foundations and slope stability. You will also provide project management, deliver your own projects in a relatively short period, and support junior colleagues.

In this role, you will help deliver practical, robust and commercially sound geotechnical solutions that support clients across a diverse range of projects.

• Delivering high‑quality geotechnical design and interpretative reporting;
• Supporting projects from early investigation through to construction;
• Helping shape safe, effective and buildable engineering solutions;
• Contributing to project delivery, coordination and technical quality;
• Supporting the development of junior staff and graduates;
• Driving business growth through trusted technical expertise.

Strong practical understanding of UK geology and geotechnical/soil mechanics principles, with experience in site investigation techniques, soil and rock logging, factual and interpretive reporting, laboratory scheduling, geotechnical assessment, analysis, modelling, risk assessment and design.

UK experience producing geotechnical interpretive and design reports, including Phase 1 Desk Studies, Phase 2 Ground Investigation Reports, Geotechnical Design Reports and geotechnical works construction specifications.

Ability to support junior staff and graduates through review, guidance and knowledge sharing, while contributing to project management in a consultancy environment and working to programme, budget and quality expectations.

Ability to work collaboratively across disciplines to develop practical geotechnical solutions that balance technical, commercial and buildability considerations.

A confident and collaborative approach, with the ability to build trust with colleagues and clients, communicate clearly and work effectively within a multi‑disciplinary team.

• Relevant Master’s degree, or Bachelor’s degree as a minimum, in Geotechnical Engineering, Engineering Geology, Geology, Civil Engineering or a related discipline.
• Full UK driving licence, as short‑term site visits are a key part of the role.
• Working knowledge of AutoCAD or GIS would be advantageous.
• Ideally close to, or already achieved, Chartered membership of the relevant professional body.
• Working experience and understanding of EC7 geotechnical design, including earthworks, foundations, settlement and slope stability analysis.

• Experience of geoenvironmental / contaminated land investigation and assessment.
• Experience supervising and monitoring earthworks or geotechnical projects for infrastructure or land development.
• Experience of Construction Quality Assurance monitoring and validation reporting in…