About the Role:

This is a rare opportunity to help shape the UK media presence of one of the most talked-about and transformational brands in the world. OpenAI sits at the centre of a fast-moving, highly scrutinised and culturally defining category, and 2026 marks a step-change in ambition, investment and visibility.

As Planning Manager on OpenAI, you’ll lead the day-to-day planning engine for the account, ensuring campaigns are integrated, aligned and delivered to the highest standard. You’ll sit at the intersection of UK, global and channel teams, translating global strategy into clear, effective local execution while maintaining momentum across multiple campaigns, audiences and channels.

This role is ideal for someone who thrives in complexity, enjoys ownership and wants to play a defining role in how a category-leading brand shows up in market.

What you’ll do

Lead end-to-end media planning across brand, product and engagement campaigns

Act as the primary day-to-day planning lead, ensuring work is joined up, on time and on brief

Be the key link between global stakeholders, UK leadership and channel teams

Own overall delivery quality, ensuring plans, outputs and recommendations are clear, rigorous and impactful

Bring structure and clarity to an evolving remit, helping the account move from reactive to genuinely proactive

About you

You’re a confident, highly organised planner with strong channel knowledge and a calm approach to complexity. You’re comfortable owning delivery, guiding others and making smart judgement calls when things move quickly or change direction.

You combine strategic thinking with operational grip, enjoy collaborating across disciplines and are curious about emerging technology, platforms and new ways of working. You take pride in high standards, clear thinking and helping teams do their best work.

Curiosity about AI, emerging platforms or hands-on experience using tools such as large language models to support day-to-day work is a welcome bonus

About the Agency:

PHD UK is a growth-focused media agency driven by innovation and creativity. It is the reigning Campaign AND Media Week Awards Media Agency of the Year and in March 2026 was named as the most awarded media agency in the World in the annual Warc Media 100 rankings.

Founded in London in 1990, we were the first media agency to offer strategic and creative planning at a time when the industry was about buying cheaply and quickly.

Our founders saw a bright future where smart thinking and clever planning could help brands grow faster than their competitors.

Over the subsequent 3 decades, we have continued to build on this defining ethic — with our evolution shaped by a continual investment in thought leadership and a culture of Ingenuity.

Today, with over 100 offices in 74 countries, we continue to create remarkable campaigns that lead to remarkable growth – using the extending canvas of data and technology.

www.phdmedia.com/london

www.phdmedia.com/manchester

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 beyourbest@omnicommediagroup.com 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 https://omnicommediagroup.com/recruitment-privacy-notices/.