Payroll Administrator (Part Time)

Job description

Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.

Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

Job DescriptionRoleAs a Payroll Administrator, you will play a key role in ensuring the accurate and timely processing of payroll for over 1,000 employees. Working closely with the Payroll & Benefits Manager, you will contribute to a reliable and customer-focused payroll function, while supporting benefits administration and ongoing process improvements.

The role is offered on a part time basis of 25 hours per week, to be worked over 5 days, with 2 days per week in the office.

Key Responsibilities

Support the accurate and timely processing of monthly payroll, including starters, leavers and contractual changes

Administer statutory payments, pensions and employee benefits in line with UK legislation

Validate payroll data, carry out checks, and support reconciliations and reporting

Maintain accurate records and ensure compliance with GDPR and company policies

Respond to payroll queries and collaborate with internal teams and external providers

Contribute to annual reward processes and continuous improvement of payroll practices

Qualifications

Previous payroll experience with a solid understanding of UK payroll legislation

Strong attention to detail, accuracy, and organisational skills

Confident using Excel and payroll/HR systems

Effective communicator with a customer-focused approach

Discreet, proactive, and committed to continuous improvement

(CIPP qualification or willingness to study towards one is advantageous.)

Additional Information

Be part of a purpose-driven organisation supporting the energy transition

Work within a collaborative and supportive People team

Gain exposure to payroll, benefits, and reward processes

Opportunity to contribute to process improvements and team development

Flexible, hybrid working environment

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Extra information

Status

Open

Education Level

Secondary School

Location

Bolton

Type of Contract

Full-time jobs

Published at

09-05-2026

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English