Supplier Finance Operations Specialist

2 weeks ago

London, Greater London, United Kingdom OMD UK Full time £40,000 - £60,000 per year

About The Role
We're looking for a detail-driven finance professional to safeguard OMD's operations by ensuring timely supplier payments and preventing the return of unbilled media that should be paid. You'll take ownership of all 90-day unbilled AP balances across clients, produce insightful monthly reports, and work closely with senior finance leaders to reconcile and resolve outstanding issues. From reviewing DoubleVerify and Barter data to managing supplier queries, onboarding, and process improvements, you'll be the key link between OMD, our suppliers, and internal teams—keeping everything running smoothly and efficiently.

About You
You're experienced in media payables and thrive on accuracy, organisation, and collaboration. With strong numerical and Excel skills (VLOOKUPs, IF formulas, Pivot Tables), you manage deadlines with ease and communicate clearly across finance and non-finance teams alike. You'll bring a proactive, problem-solving mindset—ready to streamline processes, share knowledge internally, and help elevate financial operations across OMD.

About The Agency
At OMD UK, we help our clients make better decisions, faster to unlock extraordinary growth using three industry-leading capabilities: Decisions Science, Connected Performance and Agile Innovation. We transform better customer understanding into faster marketing impact with world-class talent and technology, and we do this with some of the world's most iconic and influential brands.

We are part of the world's largest media network, with more than 12,000 people working in over 100 countries and are currently AdWeek's Global Media Agency of the Year.

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.

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 to let us know how we can support you.

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

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