Senior Accountant

Permanent employee, Full-time · London

About the job

Flatpay is one of the fastest growing companies in Europe and was founded 3 years ago in Copenhagen with the mission to take the stress out of card payments for SMBs. Businesses want to focus on what they do best; running their business. But monthly hardware fees, different rates for different cards, extra costs on every transaction and frequent price increases have made payments too stressful. That’s why we started Flatpay. One flat rate across all cards - that’s it.

We’re already more than 1,500 people across Denmark, Finland, Italy, Germany and France and recently launched in the UK.

Location: London, UK (Office-based, Soho Works, White City), 5 days a week

What you'll do

Responsibilities:

Take ownership of financial operations for Flatpay UK, reporting directly to the Head of Accounting.
Prepare, analyse, and manage UK financial statements in cooperation with the central finance team in Denmark.
Oversee and ensure compliance with UK VAT, HMRC requirements, and local tax regulations.
Handle customer invoicing and maintain accurate accounts receivable records.
Take full ownership of accounts payable, reimbursements, and card expenses to ensure all expenses are treated timely and comply with UK regulation.
Collaborate with BI and Sales teams in preparing inputs for payroll and commission-based salary calculations.
Work alongside HR as the main point of contact with our UK payroll provider.
Support month-end and year-end closing processes, reconciliations, and audits.
Provide financial insights and recommendations to management to improve efficiency.
Assist with the implementation and improvement of finance systems and processes.
Act as the UK finance point of contact for internal stakeholders, ensuring clear communication and timely financial guidance.
This role will grow as the UK business scales, offering the opportunity to take on broader responsibility over time.

Who you are

Ambitious – You want to move beyond pure accounting and play a key role in shaping how finance supports a fast-growing UK business.

Humble – You’re a team player, easy to work with, and supportive of colleagues across all departments.
Smart – You combine strong accounting expertise with sound commercial judgment and can explain financial topics clearly to non-finance stakeholders.

Skills & Attributes

Strong knowledge of UK VAT regulations, payroll, and HMRC compliance.
Highly organised, detail-oriented, and comfortable managing multiple priorities.
Skilled in preparing financial reports and supporting audits.
Excellent communication and relationship skills across all levels.
Proficiency in Microsoft Office (especially Excel).
Knowledge of Microsoft Business Central is an advantage.
Comfortable working in an environment with evolving processes and able to bring structure where needed.

Background

Degree in Finance, Accounting, or a related field.
3+ years’ experience in an accounting or finance role with increasing responsibility.
Experience with accounts receivable and invoicing.
Experience with accounts payable and ensuring correct records of expenses.
Hands-on, proactive, and able to adapt in a fast-growing company.

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About us

Welcome to Flatpay!

Flatpay is not just another payment solution; we are dedicated to innovating the market for payment solutions and financial services in the SME segment with our customer-centric and transparent services.

Today, we are one of the fastest-growing fintech companies in the Nordics - and Denmark's fastest unicorn!

Flatpay is more than just work. We believe in fostering a vibrant and fun work culture where our ambitious colleagues can thrive. As part of our team, you will be one of +1.500 passionate colleagues dedicated to making a difference in the financial world.

What sets Flatpay apart is our dedication. We continuously strive to stay ahead of the curve, adapting our solutions to meet our client's evolving needs.

Let's shape the future of 7 million European merchants together!