Assistant Accountant

Who we are

At Mercury, we’re redefining how recruitment and staffing firms use technology. Our cloud-based SaaS platform, built on Microsoft Dynamics 365 and the Power Platform, helps businesses automate, scale, and perform at their best.

Founded in 2014, we’ve grown rapidly into a global organisation with teams across the UK, US, and Australia, trusted by more than 100 customers and 8,000 users. Our growth is powered by innovation and driven by people who care about doing great work. We believe in building technology that changes how the industry works and in creating an environment where talented people can do their best work every day.

What you’ll do

As an Assistant Accountant at Mercury, you’ll join a small, experienced Finance team in a hands-on, commercially focused role that blends day-to-day accounting activity with management accounting exposure.

This role is ideal for a part-qualified accountant who already has solid practical experience and is looking to build on that experience in a supportive environment - not just process transactions and move on.

You’ll take ownership of core finance activities, work closely with colleagues across the business, and develop a strong understanding of how a multinational SaaS business operates.

Here’s what you can expect to be involved in:

• Managing the sales ledger, including reviewing contract changes to ensure accurate monthly invoicing
• Issuing customer statements and resolving billing queries
• Raising credits and supporting customer account resolution
• Supporting credit control activities and chasing overdue invoices where required
• Completing daily bank reconciliations and postings
• Preparing and uploading month-end journals, including accruals and prepayments
• Assisting with the preparation and review of management accounts for multinational entities
• Completing balance sheet reconciliations
• Working closely with teams across the business to ensure an accurate view of the accounts
• Supporting improvements to finance processes, systems, and reporting
• Liaising with auditors and external parties as required

What we’re looking for

You’ll be a confident, capable finance professional who enjoys working as part of a team and isn’t afraid to take ownership. You’ll be comfortable balancing transactional responsibilities with broader accounting tasks and will bring a practical, common-sense approach to your work.

We’re looking for:

• Part-qualified accountant (AAT / CIMA / ACCA)
• 2–3+ years’ experience in a finance role, with exposure to both sales and purchase ledger activity
• A solid understanding of core accounting principles, including accruals, prepayments, and double-entry
• Experience with reconciliations and month-end processes
• Strong Excel skills (including pivot tables, SUMIFS, filters, and lookups)
• Good communication skills and confidence working with internal and external stakeholders

We actively support professional development and can offer study support for candidates who are committed to completing their accounting qualification. This includes a combination of study time and a contribution towards exams and learning costs. As a growing business, Mercury can offer longer-term progression through increased responsibility and exposure as you develop.

Why Mercury

At Mercury, we pride ourselves on fostering a vibrant company culture that strikes the perfect balance between professionalism and a modern, enjoyable work atmosphere. Our commitment to employee well-being and growth sets us apart. Here’s what you can expect when you join our team:

Healthy Work-Life Balance: Hard work is essential, but we understand that it doesn’t mean endless hours. Unsociable work schedules are not the norm here. We believe in productivity and not burnout.

Agile and Empowered: Our commitment to Agile and Scrum methodologies empowers our developers. From top management down, everyone understands the importance of efficient processes and collaboration.

Flexible Environment: We embrace flexible working arrangements. Whether it’s remote work or flexible hours, we trust our employees to find the balance that suits them best.

Open Communication: Transparency is key. We encourage open dialogue, active listening, and constructive feedback. Your voice matters.

Gratitude and Autonomy: We appreciate hard work and celebrate achievements. You’ll have the autonomy to make an impact and contribute meaningfully to our success.

Accessible Leadership: Our leadership team is approachable and supportive. You’ll find guidance and mentorship readily available.

Equality and Inclusion: We champion diversity and equality. Everyone deserves respect, fairness, and equal opportunities.

Investment in Growth: We provide training and career growth opportunities. Don’t just take our word for it, our team members’ testimonials speak volumes.

What we offer

• Competitive salary
• Great learning and development plan
• Microsoft certifications paid for and supported by Mercury
• Permanent Health Insurance (PHI)
• Health Cash Plan
• Critical Illness Cover
• Electric Car Vehicle Scheme
• 4% Employer Pension Contribution
• 25 days holiday per year
• 1 full extra day “free holiday” on your Birthday
• Free parking
• Buy/sell holiday scheme
• Increased holiday entitlement based on length of service

Location

At Mercury, we believe in the power of face-to-face collaboration. That’s why we encourage our team members to join us at our Coleshill office 3 days per week. However, we’re all about flexibility, so we support remote work the remaining days if that’s your preference.