Accounts Assistant

About StackHPC

StackHPC is a small, friendly technology company that helps universities and research organisations run complex scientific projects in the cloud. We’ve been growing steadily for nine years, and our team of 35 still enjoys a flexible, collaborative, start-up style environment

The Role

We’re looking for a detail-focused Accounts Assistant to cover maternity leave. You’ll handle UK payroll, bookkeeping, VAT, and client project finance, while helping improve our processes. This is a hands-on role with responsibility, variety, and real impact.

Key Responsibilities

Bookkeeping & Finance Operations

• Reconcile bank and credit card accounts (multi-currency where relevant)
• Process supplier invoices and payments, client invoices, and expense claims
• Maintain accurate records in QuickBooks and spreadsheets

Payroll & Compliance

• Manage the monthly UK payroll, including pensions and auto-enrolment compliance
• Prepare quarterly VAT returns

Client & Project Support

• Track client quotations and purchase orders, ensuring financial details are reflected in jira (project management software)
• Liaise with project managers to prepare monthly sales invoices for international clients
• Manage credit control processes, including chasing overdue invoices and responding to client queries

Requirements & Skills

• AAT Level 3 or equivalent, or at least 3 years’ bookkeeping/accounting experience
• Strong understanding of double-entry bookkeeping
• Proven ability to manage payroll and pensions accurately, including statutory deductions and compliance with UK regulations
• Comfortable with multi-currency transactions
• Proficient in Microsoft Excel (formulas, pivot tables)
• Experience with QuickBooks Online and/or Google Sheets is a plus

Personal Attributes

• Excellent organisational skills and attention to detail
• High integrity, intellectual honesty, and strong work ethic
• Self-motivated and proactive, able to work independently while meeting deadlines

Benefits

• Competitive salary (£30K–£32K FTE) discretionary bonus
• Flexible hours / hybrid working
• 25 days annual leave bank holidays (pro-rata if part-time)
• 2 days paid emergency time off for dependents (pro-rata)
• 5% employer pension contributions (with salary sacrifice option)