HR & Payroll Coordinator

Smiths Detection is a global leader in threat detection and screening technologies supporting aviation, ports & borders, defence and urban security. With 5 R&D centres, 21 global offices and 7 manufacturing sites, our 3,000 brilliant minds have spent over 40 years at the frontline, developing solutions that protect society from explosives, prohibited weapons, contraband, toxic chemicals and narcotics. Every minute of every day, our technology and people help make the world a safer place.

The HR & Payroll Coordinator plays a critical role in delivering accurate, compliant payroll and HR services across our UK entities. You’ll be responsible for end‑to‑end UK payroll processing, statutory compliance and employee benefits administration, while also providing hands‑on HR coordination throughout the employee lifecycle. Working closely with the HR Manager and HR Generalists, you’ll support onboarding, HR administration, reporting, engagement activities and employee relations processes - ensuring a consistent, professional and positive employee experience. This position is site based from Hemel Hempstead.

• Payroll Management
  • Deliver accurate and timely monthly payroll using ADP iHCM, ensuring compliance with UK statutory and internal requirements.
  • Maintain payroll data for starters, leavers, contractual changes, statutory payments, and variable pay.
  • Manage statutory reporting and third‑party submissions (pensions, P45/P60/P11D, share schemes).
  • Support payroll reconciliations, audits, and continuous improvement initiatives.
• Benefits Administration
  • Administer the company car scheme, including orders, renewals, checks, and compliance.
  • Manage benefits such as pensions, healthcare, cycle to work, and SAYE schemes.
  • Ensure benefits are processed correctly through payroll and reported to HMRC.
  • Support annual renewals and employee communications.
• HR Coordination
  • Coordinate the employee lifecycle: onboarding, changes, and offboarding.
  • Maintain accurate data across HR and ERP systems and produce regular HR reports.
  • Support inductions, engagement initiatives, training requests, and HR communications.
  • Act as first point of contact for HR queries and provide employee relations administration (letters, minutes, bundles).
  • Contribute to HR projects and support monthly payroll changes.

• Proven experience delivering UK payroll with strong knowledge of statutory requirements.
• Working knowledge of HMRC compliance and statutory reporting (P45, P60, P11D).
• Experience administering employee benefits and managing provider relationships.
• Confidence using HR and payroll systems (ADP iHCM highly desirable).
• Strong Excel skills (including formulas and pivot tables).
• Exceptional attention to detail, numerical accuracy, and discretion.
• Ability to manage multiple priorities in a fast‑paced environment.
• Clear communicator who builds strong relationships across HR, Finance, and external partners.
• CIPP qualification (or working towards) desirable.
• CIPD Level 3 or equivalent HR experience advantageous.

You’ll join a supportive HR team within a global organisation with a powerful mission: helping to make the world safer through advanced detection technology. This role offers ownership, variety and the opportunity to improve processes while supporting colleagues across the business.

If you’re a HR & Payroll professional who enjoys accuracy, problem‑solving and improving processes, we’d love to hear from you. Apply directly on LinkedIn or reach out to our Talent Acquisition team for more information.

We believe that different perspectives and backgrounds are what make a company flourish. All qualified applicants will receive equal consideration for employment regardless of color, religion, sex, sexual orientation, gender identity, national origin, economic status, disability, age, or any other legally protected characteristics. We are proud to be an inclusive company with values grounded in equality and ethics, where we celebrate, support, and embrace diversity.