Site Geologist/Site Agent

09th September, 2026

The Opportunity
An excellent opportunity has arisen for a Site Geologist or Site Agent to join an established ground investigation contractor based in Berkshire
We are seeking a candidate with previous UK ground investigation experience who is confident working on site, supervising intrusive investigations, logging soil and rock samples and supporting the successful delivery of projects from mobilisation through to reporting.
The successful candidate will work across a varied portfolio of ground investigation projects, liaising with drilling teams, project managers, subcontractors and clients to ensure works are delivered safely, accurately and to the required technical standard.
This role would suit a practical and motivated geologist looking to build further responsibility across site supervision, sampling, logging and project delivery.
About the Company
The employer is an established ground investigation and geotechnical contractor delivering site investigation services across the UK.
The business supports projects across infrastructure, residential, commercial and development-led schemes, providing practical ground investigation solutions from planning and mobilisation through to completion.
With experienced project managers, drilling teams and technical staff, the company offers a hands-on environment where geologists can develop strong site experience and progress their technical capability.
The Role
As Site Geologist, the successful candidate will support and supervise ground investigation works on project sites.
The role will involve site-based delivery, soil and rock logging, sampling, monitoring, laboratory scheduling, site records and support with factual reporting.
Applicants should be comfortable travelling to sites when required and working closely with operational and technical teams.
Key ResponsibilitiesSite Investigation Delivery

• Supervise ground investigation works on site
• Assist with site mobilisation, set-up and demobilisation
• Liaise with drilling crews, subcontractors, project managers and clients
• Monitor site progress and report delays, changes or technical issues
• Ensure works are completed in line with project specifications and method statements
• Maintain accurate site records, daily logs and investigation documentation
• Ensure samples are correctly labelled, recorded, stored and transported
• Support safe and efficient delivery of ground investigation projects

Ground Investigation Techniques

• Supervise intrusive investigation techniques including cable percussion, rotary drilling, window sampling and trial pits
• Monitor drilling progress, sample recovery and ground conditions
• Record groundwater strikes and relevant site observations
• Support groundwater and ground-gas monitoring where required
• Assist with in-situ testing and sampling activities
• Ensure investigation works are completed safely and accurately

Geological Logging and Technical Work

• Undertake soil and rock logging to current geotechnical standards
• Prepare borehole, trial pit and window sample logs
• Identify and describe soil and rock strata encountered on site
• Select samples for geotechnical and environmental laboratory testing
• Prepare and manage laboratory testing schedules
• Review field records for accuracy and completeness
• Interpret geological maps and published geological information where required

Reporting and Project Support

• Assist with the preparation of factual ground investigation reports
• Process field data and laboratory results
• Prepare site plans, schedules, photographs and technical appendices
• Provide clear site information to project managers and reporting teams
• Highlight unexpected ground conditions or technical concerns
• Support office-based project work between site assignments
• Communicate clearly with internal teams and external stakeholders

Health, Safety and Quality

• Follow company health, safety, environmental and quality procedures
• Work in accordance with approved RAMS and site documentation
• Attend site inductions, briefings and toolbox talks
• Monitor safe working practices across investigation activities
• Report hazards, incidents and near misses promptly
• Maintain high standards of site housekeeping and environmental control
• Ensure technical work is completed accurately and to required standards

About You
We are seeking a candidate with previous UK ground investigation experience and a practical understanding of site investigation delivery.
The successful candidate should be confident working on active investigation sites, supervising drilling activities, preparing accurate site records and undertaking soil and rock logging.
Applicants should demonstrate strong communication skills, attention to detail, a proactive approach to health and safety and the ability to work effectively with project managers, drilling teams and subcontractors.
Essential Requirements

• Minimum 2 years' UK ground investigation experience
• Proven UK project experience is required
• Candidates must be eligible to work in the UK
• Degree in Geology, Engineering Geology, Earth Science, Environmental Geoscience or a related discipline
• Experience supervising intrusive ground investigation works
• Ability to log soil and rock to current geotechnical standards
• Understanding of common UK ground investigation techniques
• Experience preparing accurate site notes, logs and investigation records
• Basic understanding of laboratory scheduling
• Awareness of groundwater and ground-gas monitoring techniques
• Strong written and verbal communication skills
• Good organisational skills and attention to detail
• Strong awareness of site health and safety requirements
• Full UK driving licence
• Willingness to travel to project sites when required

Desirable Experience

• Experience with cable percussion, rotary drilling, window sampling and trial pits
• Familiarity with BS 5930
• Experience assisting with factual ground investigation reports
• Knowledge of geotechnical and geo-environmental sampling procedures
• CSCS card
• CAT and Genny training
• First Aid or other relevant site qualifications
• Experience working on residential, commercial, infrastructure or development projects
• Working towards professional membership or Chartership

Salary and Benefits

• Competitive salary, depending on experience
• Company van and fuel card, where applicable
• Annual leave entitlement, increasing with service
• Company pension contribution
• Mobile phone and laptop provided
• Training and development support
• Mentoring programme to support career development
• Varied, challenging and rewarding ground investigation projects
• Friendly and supportive working environment
• Subsistence and disruption allowances when working away, where applicable

Inclusion and Diversity
The employer is committed to creating an inclusive and supportive workplace where individuals from all backgrounds are welcomed and respected.