Finance Assistant

About the Role:

Reporting to: Financial Controller

This is an exciting opportunity to be at the heart of our finance operations, working closely with our two Senior Project Accountants. You’ll play a vital role in keeping our financial processes running smoothly, ensuring accuracy, and supporting teams across the business. From managing invoices and reconciliations to assisting with audits and client billing, you’ll gain hands-on experience in a fast-paced environment.

We’re looking for someone who is meticulous, proactive, and eager to develop within a finance role. You should be detail-oriented, highly organised, and able to manage multiple tasks while keeping a close eye on deadlines. A problem-solving mindset, confidence in taking initiative, and strong communication skills are essential. You should be comfortable working independently while also collaborating with teams across the business.

You’ll support the finance team with a variety of day-to-day tasks work, include, but are not limited to:

• Support with managing the WIP list, posting adjustments, and improving ledger accuracy
• Raising and managing project and overhead purchase orders (POs), processing invoices through to payment
• Setting up and managing supplier and client accounts, handling queries as they arise
• Raising client invoices and managing credit control, including working with teams to resolve aged debt issues
• Assisting with preparing balance sheet reviews and making necessary adjustments
• Chasing timesheet completion and running weekly reports for analysis
• Managing company credit card reconciliations, claim submissions, and card reconciliation.
• Supporting new staff inductions by demonstrating the timesheet, expenses, and PO system
• Assisting client teams with budgets, financial administration, and supplier setup
• Helping client teams with new system setups
• Providing on-site financial support when required
• Assisting with internal and external MediaOcean issues
• Supporting audit preparations at year-end and pulling together necessary documentation
• Ensuring the smooth running of receivables and payables, including market billing

Desired Skills & Experience

• A BA degree in Accounting or experience in a similar role is preferable but not necessary
• Strong attention to detail and the ability to prioritise tasks effectively
• Experience with Microsoft Excel at a beginner or intermediate level
• Great written and verbal communication skills
• A collaborative, can-do attitude, working well with teams across the business
• The ability to work independently while also collaborating with a team
• Experience with MediaOcean (DDS, Aura, PostBox, and Flexibill) is desirable but not essential

This role is a great fit for someone looking to build a solid foundation in finance within a dynamic and supportive environment. If you’re ready to take on a role where accuracy and teamwork make a real impact, we’d love to hear from you.

This is a full-time role & you must be eligible to work in the UK.

Fuse job descriptions are not intended to be restrictive and are a guideline to the duties in this role.

We are committed to providing comprehensive training & development plans for all team members.

About the Agency:

Culturally Connected, Seriously Effective. 

A global agency with local expertise, connecting brands to the things that matter most to their audiences in culture through partnerships in sport, music, film & television, gaming & esports.  These connections make our clients more memorable - the key to unlocking effectiveness. 

Powered by Omnicom Media Group, we bring an extra edge to strategy, execution, and measurement. 

Our work has won numerous awards, and the industry frequently recognises our people as top performers in their field. We place great importance on trusted relationships, sound moral judgement, and strong governance, all delivered through transparent processes. 

We have a fantastic team of 120 in our London HQ and 300 more across offices worldwide, working with incredible clients, including PepsiCo, Vodafone, Nissan, British Gas, Renault, Enterprise Rent-A-Car, McDonald’s, and Just Eat Takeaway.com. 

Follow us @fuse_agency Visit us online. Find us on LinkedIn 

Flexible Working

At Omnicom Media Group, we are committed to supporting flexibility for our people while fostering collaboration, innovation, and teamwork. We have a hybrid working model (three days in the office, two working remotely), to ensure that we meet the needs of both our people and our business, balancing the benefits of in-person connections with the flexibility of remote working.  Our standard working hours are 9:30 – 17:30, but we offer the ability to flex around core hours of 10:30 – 16:30 to give our people flexibility on how they manage their working day, whether that’s in the office or working remotely. For example, you could start work at 8:30 and finish at 16:30 or start at 10:30 and finish at 18:30.

We encourage open conversations between our people and managers to help navigate high-need periods and individual circumstances. Our goal is to create an environment where people feel genuinely supported to do their best - both in their careers and in their lives outside of work.

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Be Your Best

We want everyone to make the most of the opportunity to shine and showcase your talents and we are happy to make adjustments in the recruitment process so you can be your best. Please discuss any specific requirements with your dedicated Talent Team member or if you would feel more comfortable, you can email us confidentially at beyourbest@omnicommediagroup.com to let us know how we can support you.

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Diversity, Equity & Inclusion at OMG

At OMG, our vision is to be an agency where difference is valued and everyone is able to thrive in a culture of equality, inclusion and belonging. We are committed to providing a truly inclusive environment that reflects today’s society, where everyone is able to bring their true selves to work, and where diverse voices and backgrounds are valued, heard, and well-represented.

We will process your personal data in accordance with our Recruitment Privacy Notice which is available on https://omnicommediagroup.com/recruitment-privacy-notices/.