Site Agent


Founded in 1968, Griffiths is one of the leading civil engineering and rail contractors working throughout Wales, the midlands and south-west England. With an annual turnover of circa £250m our 1000+ directly employed, well-trained, dedicated and highly competent workforce deliver client solutions which includes Welsh Government, Network Rail, Highways England, local authorities, Utility Companies and private sector organisations.

In 2018, Griffiths became part of Tarmac, the UK’s leading sustainable building materials business and a wholly owned subsidiary of CRH.

We’re now recruiting for a Site Agent in our Geotechnical and Rail business who will be responsible for the safe and profitable delivery of infrastructure projects across Wales and the West. The role is based in South Wales. Examples of projects are stabilisation of cuttings or embankments, soil nailing, drainage schemes  and repairs to earthworks and related structures.

The Site Agent will ensure all safety, pricing, technical and commercial objectives are met and will also seek to enhance the reputation of the company.


On a day to day basis, the Site Agent’s duties and responsibilities will include (but are not limited to) the following:

  • Leading a team of internal Griffiths staff and a team of external specialist subcontractors
  • Ownership of the entire project through to the end with full commitment and a relentless drive to succeed.
  • Planning and pricing contracts at tender stage
  • Health and safety leadership to the assigned operational delivery site team
  • Ensuring that site management team rigorously adhere to Network Rail’s Life Saving Rules
  • Ensuring compliance with all relevant HSE legislation and NR Standards
  • Promoting and implementing sustainable business objectives
  • Achieving gross site margin target on allocated schemes as directed by the contracts manager
  • Compliance with all relevant Network Rail Standards, Griffiths Procedures and HSE guidance
  • Ensuring sufficient and competent resource is in place for the delivery of the project and ensuring the project objectives are communicated to the site team
  • Developing and maintaining a construction programme and ensuring works are communicated and delivered against milestones.
  • Identifying, managing and controlling associated programme risks and communicating this as required
  • Promoting and maintaining effective client and stakeholder relationships to protect and enhance the company’s reputation to support repeat business
  • Upholding the core company values, inspiring and encouraging the same throughout the team


To be successful in this role it is likely the ideal candidate will have a relevant Degree or HND in geological, structural or civil engineering, or similar or be in possession of relevant equivalent experience.

You will have previous experience of leading complex construction sites in a supervisory, engineering or leadership capacity. Experience in planning, pricing and delivering geotechnical projects is highly desirable.

In addition you will have proven leadership skills.

Ideally, you will also be in possession of Personal Track Safety, SMSTS and have a relevant CSCS card (or equivalent)


We offer an extensive range of career development opportunities and industry-leading rewards, incentives and benefits:
  • Company car/car allowance (where applicable)
  • Enhanced holiday entitlement
  • Contributory pension scheme
  • Access to the Tarmac Reward website with discounts on retailers, holidays, etc.
  • Access to our Employee Assistance helpline for free and confidential advice
  • Access to join our Employee Communities (employee networks)
  • We currently have nine communities inc.(REACH) Religious, Ethnic, Cultural Heritage, LGBTQ+, Parents & Carers, Ability, Wellbeing, Female voice and Menopause’
  • Training and development opportunities

Griffiths, a CRH company, is an equal opportunity employer. We are committed to creating an inclusive work environment for all employees and actively encourage applications from all sectors of the community.

Apply Job applications are processed by our parent company, Tarmac. Clicking apply will take you to their website, but don't worry - your application will be sent through to the careers team at Alun Griffiths

Explore our sectors

Our extensive levels of expertise can be split into three major sectors: INFRASTRUCTURE, RAIL and GEOTECHNICAL.