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About the Role
The HR Administrator position within Costain People Services will support the inhouse payroll team and wider People function.
The role requires a professional, efficient, and customer-facing approach, providing a high-quality, consistent service across:
- Telephone and email advice
- Transactional support
- Compliance with corporate, management policies, and processes
This is a hybrid role, with 3 days on-site at our Maidenhead office.
Responsibilities You will be responsible for:
- Administering HR processes with a sharp focus on accuracy and efficiency
- Supporting the payroll team in delivering accurate payroll operations
- Acting as a first point of contact for employee inquiries, providing clear guidance
- Ensuring alignment with Costain’s HR policies, standards, and operational best practices
- Collaborating closely with the multi-functional People Services team
- Maintaining consistency and compliance in all administrative actions
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About Costain Costain drives excellence in smart infrastructure – shaping the future of energy, water, transportation, and defence across the UK.
Our mission is to be the UK’s leading smart infrastructure solutions company, delivering: ✔ Cost-effective, sustainable, and resilient systems ✔ Digital optimisation through cutting-edge technology ✔ End-to-end support covering strategic consultancy, advisory, digital solutions, asset optimisation, and complex programme delivery
At the heart of our success are our values and culture, fostering accountability, professionalism, and customer-focused innovation.
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Recruitment Process
Costain acknowledges the time and effort required in applying for roles and regretfully are unable to offer individual feedback at application stage due to high response volumes. However, feedback will be provided post-interview.
Our company is committed to inclusivity. As a Disability Confident employer, we aim to offer interviews to all qualified candidates who self-disclose a disability—unless during high-volume or peak recruitment phases, where interview numbers may be capped for all applicants.
For more details, visit the Disability Confident website: Disability Confident Campaign
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