Contractor Payroll & Accounts Assistant (Part-Time)

Strongfield Technologies Ltd
Location: Office Based :- Alperton / Wembley, Middlesex (HA0 1BA)
Part-Time Position: 3 days per week, circa £15 / hr (negotiable)
Start Date: Immediate Start- July/Aug 2026

Strongfield is an international recruitment, engineering services and technology business/group operating across the aerospace, defence and advanced engineering sectors. In addition to providing specialist engineering and consultancy support to major global programmes, the Group supplies high-tech equipment and ruggedised power solutions to customers worldwide.

To support our growth, we are looking for a Contractor Payroll & Accounts Assistant to support our finance team with contractor payroll, invoicing, bookkeeping and general finance administration.
We anticipate the role to be at a junior accounts assistant level with opportunity to develop through internal training.

Key Responsibilities

Assist with contractor payroll processing and timesheet administration
Prepare contractor and client invoices
Maintain payroll and finance records
Process purchase invoices using Xero
Assist with sales and purchase ledger activities
Perform bank reconciliations
Support bookkeeping and month-end administration
Respond to payroll and invoicing queries from contractors and clients
Provide general administrative support to the finance team

Skills & Experience
Essential

Experience using Xero accounting software
Previous experience in payroll, accounts or finance administration
Experience with purchase and sales ledger activities
Bank reconciliation experience
Good Microsoft Excel skills
Strong attention to detail and organisational skills

Desirable

Contractor payroll experience
Experience within recruitment, staffing or professional services
Knowledge of PAYE and contractor payroll processes

Personal Attributes

Reliable and trustworthy
Organised and methodical
Accurate and detail-oriented
Able to work independently and as part of a team
Professional and confident communicator

What We Offer

Friendly and supportive working environment
Varied role across payroll, bookkeeping and finance administration
Opportunity to develop within a growing international business

How to Apply
Please submit your CV together with a brief summary of any relevant Xero, bookkeeping and payroll experience.
Candidates must be eligible to work in the UK before making an application and it is the responsibility of the applicant to provide evidence of such eligibility.

Strongfield

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Contractor Payroll & Accounts Assistant (Part-Time)