Finance Administration Assistant

Overview

Were looking for a detail-driven and proactive Finance Administration Assistant to join Whistl on a permanent, part-time basis.

This role is ideal for someone who enjoys working with numbers, processes, and people, and who takes pride in delivering accurate, timely financial and administrative support.

Youll play a key role in supporting invoice delivery, reporting, and operational efficiency while helping to maintain excellent customer experiences.

The Finance Administration Assistant plays a key role in ensuring smooth financial administration and high service standards across the business. Youll work closely with internal teams, supporting bespoke invoicing processes, reporting, and customer queries, while ensuring accuracy and efficiency at all times.

• Ensure all correspondence is clear, professional, and delivered in a timely manner
• Manage bespoke invoicing processes, including preparation of manual billing
• Raise invoices and investigate invoice queries
• Update and maintain purchase orders
• Maintain and update CRM systems
• Generate and distribute monthly and ad-hoc Jet reports for multiple account managers
• Prepare and submit monthly KPI reports, detailing service levels
• Manage bespoke envelope orders, liaising with suppliers for quotes and pricing
• Raise invoices for envelope orders and support customer pricing queries
• Maintain up-to-date knowledge of Whistl products and internal processes
• Support the wider Customer Services and Finance teams as required
• Undertake additional duties in line with the role

• Permanent | Part-Time | 22.5 hours per week (3 days)

• Annual leave enhanced with long service.
• Company Pension
• Long service rewards: both financial and leave-based.
• Health cash plan.
• Life assurance scheme.
• Critical Illness cover
• Access to our prestige benefits and rewards portal.
• Career development opportunities.
• Access to a well-established Employee Assistance Programme provider.
• And other excellent benefits you'd expect from a market leader.

• Strong organisational skills with the ability to prioritise and meet deadlines
• A proactive, hands-on team player with a positive, can-do attitude
• Self-motivated and able to work independently with strong attention to detail
• Confident communicator, both written and verbal, across phone, email, and in person
• Strong analytical skills with the ability to interpret data and identify trends
• Proficient in Microsoft Office and comfortable using internal systems

• Experience using CRM systems
• Knowledge of postal or logistics industry workflows
• Experience with KPI reporting or performance data analysis
• Advanced numerical skills