Accounts Assistant

About the role

As an Accounts Assistant at Costello Medical, you will support a wide range of financial tasks and processes to ensure the smooth operation of our North American financial functions. The role is full‑time, permanent, with an immediate start in 2026 and is based in our Boston office.

Responsibilities

• Processing supplier invoices, credit card transactions, and internal expenses
• Bookkeeping across all group companies using AIQ, Rapport3, and Concur
• Supporting financial reporting and data reconciliation activities
• Advising scientific teams on expense management and invoicing procedures
• Identifying and suggesting improvements to financial and administrative systems
• Assisting with general financial duties such as budgeting, forecasting, and month‑end processes
• Projecting a positive image of the Finance team and actively seeking to reduce the administrative burden placed on others

Qualifications

A relevant educational background or at least one year of experience working in a finance‑related role.

Requirements

• Essential: Experience supporting various areas of finance, such as ledger management, reconciliations, and financial reporting
• Essential: Excellent numerical skills and strong attention to detail
• Essential: Strong communication skills, both written and verbal, with the ability to build robust and sustainable working relationships
• Essential: Exceptional organizational skills and the ability to prioritize tasks effectively
• Essential: Ability to plan and manage your own workload, meet deadlines, and collaborate effectively with others
• Essential: Interest in, and aptitude for, mastering new systems and internal processes
• Essential: Experience using Microsoft Office applications, particularly VLOOKUP and pivot table functions in Excel
• Desired: Practical experience using the Rapport3 and AccountsIQ platforms, as well as an understanding of other financial systems

Pay

Salary: $52,000 to $55,000 per year, depending on prior experience. Discretionary profit‑share bonus paid twice per year.

Benefits

• Hybrid working options – up to 50% of time working from home
• Generous vacation allowance – 23 days’ leave, increasing by 1 day per year to a maximum of 27 days
• Six public holidays plus one floating holiday
• Flexible working hours
• Private medical and dental insurance (with company contribution)
• Vision coverage
• 401(k) retirement plan with up to a 5% employer match
• Life insurance
• Full funding for external training and paid funding for external education/study leave
• Comprehensive travel insurance
• Regular company‑funded social activities