Careers at the M O'Brien Group

Quarry Manager

M O’Brien Group are seeking a suitbale individual to take on the role of Quarry manager within our LB Silica Sand quarry in Bedfordshire. LB Silica Sands is a successful sand quarry and supplies over 20 different grades of sands, with reserves to last upwards of 20 years. Sections of the quarry are also undergoing restoration using inert fill material.  

The applicant will require the following skills:

  • Knowledge of processing plant and equipment. 
  • Knowledge and understanding of the quarry regulations 1999 and ACOP. 
  • Competence by CPD in order to hold 8.1C responsibility. 
  • Completed or working towards SHE NVQ level 4 or equivalent. 
  • At least 3 years experience of managing teams. 
  • This is a senior management role that will be suited to an individual with the skills to self motivate, manage people and also demonstrate their competence and understanding to any regulatory bodies. We are looking for someone who is a team player and comitted to delivering our company values to our customers. 


M O’Brien is an equal opportunities employer and all applications will be held in the strictest of confidence. 

Quantity Surveyor

M O’Brien Civil Engineering have an opening for an experienced quantity surveyor to join our growing team. The role will be office based in St Albans, but will include a significant number of site visits.

The responsibilities of this role include:

  • Recording and pricing changes and variations to the original scope of works. 
  • Preparing applications for payment.
  • Tracking and managing project costs.
  • Dealing with Client queries and providing justification for the prepared valuation.
  • Develop long term and mutually beneficial relationships with clients to drive repeat business. 
  • Management of sub contractors (where required)
  • Assisting the business development team with pricing and estimating new works.
  • It is expected that your day to day behaviours be driven by the M O’Brien core values.

Minimum qualifications include:

  • Degree in quantity surveying.
  • Accredited by RICS or CIOB
  • Experience within the civils or earthworks sector.

This is a role for an experienced QS, if you do not have the relevant experience to apply now, please check back here in early 2023 when we will have an opening for a trainee QS position. 

M O’Brien is an equal opportunities employer and all applications will be treated with the strictest of confidence.


Purchase Ledger Clerk

M O’Brien Group are currently looking for a Purchase Ledger Clerk based in St Albans.

Must have previous experience within accounts payable in construction or Plant hire

Character of the Job:

Reporting to the Financial Controller and the candidate will be responsible responsible for the Accounts Payable ledger. Logging, coding, processing and reconciliation of all statements and invoices ensuring authorisations are in place. This role requires problem resolution skills and the ability to communicate effectively across functional lines.

Essential Functions:

* Setting up and maintaining of supplier accounts and ensuring compliance with our procurement policy.

* Experience of Sage Line 50

* Investigating and managing system interface errors to ensure that invoice batches are correctly processed.

* Reconciliation of supplier’s statements, to ensure all invoices have been received and matching to the GRNI reconciliation.

* Reconciliation of intercompany Accounts Payable Ledger with other sites.

* Resolution of any queries on invoices and Purchase Orders, relating to price, quantities delivered etc., this involves developing strong relationships with our suppliers and operations departments. Track errors and issues to ensure they are closed in a timely manner.

* Clearing Accounts Payable Bank transactions


* The ability to work on own initiative, as well as being a team player

* Application of established accounting policies and procedures gained through academic training and practical accounting experience.

* Analytical and interpretive abilities.

* Sound knowledge of, and user skills in all pertinent computer systems, and PC based analytical tools.

* Human relations skills for personal, telephone and written contact with Finance and other departments to tactfully obtain required information and to supply solutions to problems

Role: Full time

To apply please submit your CV and current / expected remuneration details to the link below

Training Centre Manager

We are currently seeking a motivated and experienced person to help us lead the way in the field of training as we launch our new construction training centre in Hemel Hempstead. The centre is newly established with CPCS and NPORS accreditation in place. Our aim for this school is to give new operators a safe, nurturing and friendly environment to learn their skills through a comprehensive training strategy.

The responsibilities of the role involve:

  • The overall running of the training school.
  • Maintaining and ensuring compliance of accreditations to ensure the school retains status (NOCN, CPCS, CITB, NPORS etc)
  • On boarding and supervision of training staff.
  • Commercial management, ensuring all training is captured and invoiced in line with the company’s processes.
  • Overseeing and implementing the M O’Brien Groups apprentice programs, providing input to continuously improve the syllabus to better the learning experience.
  • Producing of learning material for in house training courses (GPS, Slew/height, Environmental training etc)
  • Producing of KPI and Business performance reports to the Group Directors.


Skills/ Experience

  • Experience of the construction training environment.
  • Familiarity with the CPCS/NPORS testing processes.
  • Knowledge or the various skills cards and their achievement process for delegates.
  • Good computer/ administration skills.
  • Trainer qualifications desirable (CPCS/ NPORS)
  • Presentation skills.

Plant Engineer / Fitter

M O’Brien Plant Hire require experienced plant machinery fitters to join our team. You will be responsible for carrying out the repair and maintenance of all types of heavy plant of a variety of sizes.

The successful candidate will:

  • Have previous experience of working with a range of heavy plant equipment, machines and hydraulic equipment
  • Have previously worked in the Plant Hire Industry
  • Be confident in the diagnosis of electrical and hydraulic systems
  • Be able to work alone and under own initiative
  • Possess good communication skills and have the ability to communicate at all levels, including with colleagues and clients.
  • You will have your own tools
  • Be within a commutable distance of AL3

Job Details:

  • Hours of work will be Monday – Friday 07:00 – 18:00, overtime may be required as per the needs of the business
  • Saturday 07:00 – 13:00 overtime may be required as per the needs of the business
  • Our fleet include Hitachi, JCB, CAT, Hyundai, Case, Kobelco, Takeuchi, Komatsu.
  • We have an extensive hire fleet to include 360, Rubber Duck, Dozers, ADT’s, Telehandlers, Tractors, Telescopic excavators and a full range of attachments.


This role will be yard based in Hemel Hempstead and surrounding areas.

For more information on this role please click the link below to send us your CV for consideration.

Plant and Product Trainer

Windmill training is currently recruiting for a full time trainer to work at its new training facility in St Albans. This is a full time position and your time will be split between delivering CPCS/ NPORS courses and conducting end point assessments. Part of your role will from time to time involve visiting M O’Brien sites and conduction operator assessments and delivering any in house training courses such as Red zone training and economical operator training.

Responsibilities include:

  • Delivering CPCS/ NPORS approved courses to candidates.
  • Testing Candidates for CPCS/ NPORS categories.
  • Deliver refresher training to experienced operators.
  • Support the wider M O’Brien group with Safety knowledge and input.
  • Deliver on site training and in house training courses.
  • Support apprentices with training and advice.
  • Help the training team develop new and existing training courses.

Skills and experience

  • Minimum of 10 years experience of operating plant.
  • Various categories of CPCS tester card (360 excavator/ ADT/ Dumper/ Telehandler etc)
  • Experience of tenstar simulators would be beneficial but not crucial as we can provide training for this.
  • Presentation/ coaching skills.
  • Driving licence.

Above all, we want our training experience to be a positive one for candidates, the trainer will be required to deliver training in a helpful and nurturing way, particularly for candidates new to the construction industry and apprentices.

For more information on this role, please click the link below to send us your CV for consideration.

Assistant Book keeper

Ashvale Haulage Ltd are part of the M O’Brien Group of companies have an opening for an Assistant book keeper to join our team at the St Albans office. 

The key responsibilities of the role will include; 

Daily processing of purchase invoices from matching purchase orders to entering invoices on our accounts programme.

  • Daily processing of sales invoices, sending to customers along with monthly statements.
  • Review and resolve any issues on purchase and sales ledger.
  • Reconcile supplier monthly statements.
  • Process credit card and petty cash payments ready for reconciling.
  • Preparing reports for month end payment run.
  • Filing and other administration duties.


Skills that will help the applicant

  • Experience using Sage Line 50 Accounts
  • Good communication skills.
  • Be able to work on their own initiative as well working within their team.
  • Have sound knowledge and general computer skills.
  • Work accurately and manage all deadlines on point.


Salary: £28,000.00 – £30,000.00 a year dependant on experience, on a full time, permanent basis.

Hours are 8am to 5pm, Monday to Friday

All applications will be kept in the strictest of confidence

Receptionist / Admin Assistant

M O’Brien group are looking for a receptionist / administrative assistant to work with our accounts team at our head office near St Albans. The role would give the candidate an insight into the running of a busy accounts and payroll department and offer progression as their skills and knowledge develop. 

Key Responsibilities:

  • Answering and managing incoming calls
  • Allocating documents and records correctly.
  • General office administration i.e. filing and scanning
  • Working as part of a team and helping out where needed.
  • Greeting customers into the office.
  • Manage incoming deliveries.
  • Maintaining and organising reception, meeting room and offices
  • Assist with admin support for directors / managers as needed.


The ideal candidate will need to have:

  • Reception work experience (would be ideal)
  • Good level of IT skills
  • Solid written and verbal communication skills
  • Excellent organizational skills
  • The ability to work as a team but also alone and use their own initiative.


Salary: £25,000.00 a year, on a full time and permanent basis.

Hours are 8am to 4pm, Monday to Friday.

Note to recruitment agencies – All M O’Brien Group companies have a strict preferred supplier list of agency partners that support us from time to time in line with our terms and conditions. As such, any CV’s or candidates submitted without the correct written request or written pre agreed terms will be treated as a gift and no fee will be payable. If you would like to express an interest in becoming a preferred supplier, please contact our procurement team at –

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